./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61245002f662171c4f63dbacefaa0e216ea9fe3a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:09:53,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:53,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:53,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:53,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:53,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:53,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:53,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:53,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:53,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:53,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:53,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:53,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:53,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:53,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:53,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:53,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:53,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:53,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:53,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:53,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:53,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:53,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:53,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:53,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:53,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:53,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:53,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:53,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:53,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:53,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:53,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:53,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:53,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:53,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:53,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:53,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:53,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:53,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:53,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:53,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:09:53,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:53,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:53,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:53,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:53,621 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:53,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:53,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:53,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:53,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:53,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:53,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:09:53,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:09:53,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:09:53,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:53,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:53,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:53,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:09:53,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:53,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:53,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:09:53,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:09:53,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:53,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:53,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:09:53,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:09:53,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:53,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:09:53,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:09:53,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:53,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61245002f662171c4f63dbacefaa0e216ea9fe3a [2020-11-28 03:09:53,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:53,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:54,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:54,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:54,005 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:54,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-11-28 03:09:54,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/data/1f8d37973/60c0549ee2754f81b3e6d8e09833cfb0/FLAGafb75e258 [2020-11-28 03:09:54,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:54,750 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-11-28 03:09:54,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/data/1f8d37973/60c0549ee2754f81b3e6d8e09833cfb0/FLAGafb75e258 [2020-11-28 03:09:55,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/data/1f8d37973/60c0549ee2754f81b3e6d8e09833cfb0 [2020-11-28 03:09:55,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:55,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:55,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:55,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:55,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:55,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e711980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55, skipping insertion in model container [2020-11-28 03:09:55,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:55,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:55,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:55,426 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:55,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:55,489 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:55,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55 WrapperNode [2020-11-28 03:09:55,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:55,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:55,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:55,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:55,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:55,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:55,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:55,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:55,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... [2020-11-28 03:09:55,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:55,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:55,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:55,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:55,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:09:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-28 03:09:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-28 03:09:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-28 03:09:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-28 03:09:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:56,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:56,151 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:09:56,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:56 BoogieIcfgContainer [2020-11-28 03:09:56,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:56,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:56,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:56,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:56,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:55" (1/3) ... [2020-11-28 03:09:56,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291741c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:56, skipping insertion in model container [2020-11-28 03:09:56,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:55" (2/3) ... [2020-11-28 03:09:56,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291741c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:56, skipping insertion in model container [2020-11-28 03:09:56,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:56" (3/3) ... [2020-11-28 03:09:56,167 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-11-28 03:09:56,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:56,186 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:09:56,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:09:56,243 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:56,243 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:09:56,243 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:56,243 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:56,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:56,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:56,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:56,244 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 03:09:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:56,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:56,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2146840844, now seen corresponding path program 1 times [2020-11-28 03:09:56,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:56,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821155663] [2020-11-28 03:09:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:56,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821155663] [2020-11-28 03:09:56,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:56,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:56,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021783400] [2020-11-28 03:09:56,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:56,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:56,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:56,658 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-11-28 03:09:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:56,774 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-11-28 03:09:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:56,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:09:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:56,798 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:09:56,799 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:09:56,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:09:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:09:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:09:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-28 03:09:56,845 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-11-28 03:09:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:56,845 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:09:56,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-28 03:09:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:09:56,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:56,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:56,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:56,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1412337332, now seen corresponding path program 1 times [2020-11-28 03:09:56,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:56,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015992680] [2020-11-28 03:09:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015992680] [2020-11-28 03:09:56,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:56,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:56,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199231356] [2020-11-28 03:09:56,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:56,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:56,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:56,952 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-11-28 03:09:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:57,029 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-11-28 03:09:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:57,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:09:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:57,031 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:09:57,032 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:09:57,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:09:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-28 03:09:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:09:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-28 03:09:57,043 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2020-11-28 03:09:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:57,043 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:09:57,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-11-28 03:09:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:09:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:57,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:57,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:09:57,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -888595213, now seen corresponding path program 1 times [2020-11-28 03:09:57,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:57,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767863414] [2020-11-28 03:09:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:09:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 03:09:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:09:57,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767863414] [2020-11-28 03:09:57,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004270200] [2020-11-28 03:09:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:09:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:09:57,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:09:57,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:09:57,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-11-28 03:09:57,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002329292] [2020-11-28 03:09:57,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:09:57,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:57,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:09:57,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:57,455 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 10 states. [2020-11-28 03:09:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:57,732 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-11-28 03:09:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:09:57,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-11-28 03:09:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:57,736 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:09:57,736 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:09:57,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:09:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:09:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-28 03:09:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:09:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-11-28 03:09:57,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2020-11-28 03:09:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:57,750 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-28 03:09:57,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:09:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-28 03:09:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:09:57,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:57,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:57,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:09:57,972 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1502460051, now seen corresponding path program 1 times [2020-11-28 03:09:57,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:57,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885424990] [2020-11-28 03:09:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:09:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:09:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:09:58,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885424990] [2020-11-28 03:09:58,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44598969] [2020-11-28 03:09:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:09:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:09:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:09:58,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:09:58,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-28 03:09:58,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379492557] [2020-11-28 03:09:58,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:09:58,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:58,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:09:58,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:58,305 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 9 states. [2020-11-28 03:09:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:58,593 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-11-28 03:09:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:58,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-28 03:09:58,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:58,603 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:09:58,608 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:09:58,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:09:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-28 03:09:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:09:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2020-11-28 03:09:58,625 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2020-11-28 03:09:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:58,625 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2020-11-28 03:09:58,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:09:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2020-11-28 03:09:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:09:58,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:58,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:58,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:58,848 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash -801267146, now seen corresponding path program 1 times [2020-11-28 03:09:58,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:58,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178296104] [2020-11-28 03:09:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:09:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:09:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 03:09:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-28 03:09:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:09:59,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178296104] [2020-11-28 03:09:59,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131548259] [2020-11-28 03:09:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:09:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:09:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 03:09:59,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:09:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-11-28 03:09:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921834302] [2020-11-28 03:09:59,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:09:59,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:09:59,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:59,224 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 11 states. [2020-11-28 03:09:59,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:59,622 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-28 03:09:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:09:59,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-11-28 03:09:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:59,626 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:09:59,626 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:09:59,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:09:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:09:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-28 03:09:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-28 03:09:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2020-11-28 03:09:59,662 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2020-11-28 03:09:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:59,663 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2020-11-28 03:09:59,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:09:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2020-11-28 03:09:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 03:09:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:59,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:59,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:59,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:59,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1583643682, now seen corresponding path program 1 times [2020-11-28 03:09:59,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:59,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986152212] [2020-11-28 03:09:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:09:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:09:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:10:00,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986152212] [2020-11-28 03:10:00,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387982005] [2020-11-28 03:10:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:00,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:10:00,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:10:00,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:00,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-11-28 03:10:00,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109883231] [2020-11-28 03:10:00,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:10:00,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:10:00,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:10:00,360 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand 13 states. [2020-11-28 03:10:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:01,080 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2020-11-28 03:10:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:10:01,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-11-28 03:10:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:01,084 INFO L225 Difference]: With dead ends: 177 [2020-11-28 03:10:01,085 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 03:10:01,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:10:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 03:10:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2020-11-28 03:10:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 03:10:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2020-11-28 03:10:01,138 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2020-11-28 03:10:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:01,138 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2020-11-28 03:10:01,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:10:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2020-11-28 03:10:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:10:01,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:01,143 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:01,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:01,370 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1063158393, now seen corresponding path program 1 times [2020-11-28 03:10:01,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:01,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925627319] [2020-11-28 03:10:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:10:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-28 03:10:01,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925627319] [2020-11-28 03:10:01,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938172645] [2020-11-28 03:10:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:01,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:10:01,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:10:01,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:01,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-11-28 03:10:01,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055707953] [2020-11-28 03:10:01,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:10:01,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:10:01,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:10:01,881 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand 14 states. [2020-11-28 03:10:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:02,715 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2020-11-28 03:10:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:10:02,717 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-11-28 03:10:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:02,729 INFO L225 Difference]: With dead ends: 255 [2020-11-28 03:10:02,729 INFO L226 Difference]: Without dead ends: 155 [2020-11-28 03:10:02,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:10:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-28 03:10:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-11-28 03:10:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:10:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2020-11-28 03:10:02,786 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2020-11-28 03:10:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:02,786 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2020-11-28 03:10:02,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:10:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2020-11-28 03:10:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-28 03:10:02,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:02,802 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:03,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:10:03,016 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1732889556, now seen corresponding path program 1 times [2020-11-28 03:10:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:03,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221306153] [2020-11-28 03:10:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-28 03:10:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-11-28 03:10:03,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221306153] [2020-11-28 03:10:03,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107287382] [2020-11-28 03:10:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:03,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:10:03,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 03:10:03,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:03,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2020-11-28 03:10:03,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646979684] [2020-11-28 03:10:03,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:10:03,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:10:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:10:03,724 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand 14 states. [2020-11-28 03:10:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:04,385 INFO L93 Difference]: Finished difference Result 241 states and 471 transitions. [2020-11-28 03:10:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 03:10:04,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-11-28 03:10:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:04,389 INFO L225 Difference]: With dead ends: 241 [2020-11-28 03:10:04,389 INFO L226 Difference]: Without dead ends: 120 [2020-11-28 03:10:04,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:10:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-11-28 03:10:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2020-11-28 03:10:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 03:10:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 151 transitions. [2020-11-28 03:10:04,424 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 151 transitions. Word has length 93 [2020-11-28 03:10:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:04,425 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 151 transitions. [2020-11-28 03:10:04,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:10:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 151 transitions. [2020-11-28 03:10:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-28 03:10:04,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:04,431 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:04,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:04,656 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1676450270, now seen corresponding path program 2 times [2020-11-28 03:10:04,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:04,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763319649] [2020-11-28 03:10:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:10:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 77 proven. 24 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-28 03:10:05,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763319649] [2020-11-28 03:10:05,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118871855] [2020-11-28 03:10:05,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:05,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:10:05,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:05,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:10:05,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-11-28 03:10:05,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:05,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2020-11-28 03:10:05,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678998952] [2020-11-28 03:10:05,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:10:05,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:10:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:10:05,277 INFO L87 Difference]: Start difference. First operand 98 states and 151 transitions. Second operand 14 states. [2020-11-28 03:10:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:05,851 INFO L93 Difference]: Finished difference Result 212 states and 383 transitions. [2020-11-28 03:10:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:10:05,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-11-28 03:10:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:05,855 INFO L225 Difference]: With dead ends: 212 [2020-11-28 03:10:05,855 INFO L226 Difference]: Without dead ends: 123 [2020-11-28 03:10:05,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:10:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-28 03:10:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-11-28 03:10:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 03:10:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 183 transitions. [2020-11-28 03:10:05,880 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 183 transitions. Word has length 92 [2020-11-28 03:10:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:05,886 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 183 transitions. [2020-11-28 03:10:05,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:10:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 183 transitions. [2020-11-28 03:10:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-28 03:10:05,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:05,891 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:06,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:06,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:06,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1836149343, now seen corresponding path program 3 times [2020-11-28 03:10:06,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:06,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368673837] [2020-11-28 03:10:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:10:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-11-28 03:10:07,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368673837] [2020-11-28 03:10:07,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368794507] [2020-11-28 03:10:07,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:07,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-28 03:10:07,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:07,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 63 conjunts are in the unsatisfiable core [2020-11-28 03:10:07,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-11-28 03:10:07,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:07,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2020-11-28 03:10:07,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209024963] [2020-11-28 03:10:07,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-28 03:10:07,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-28 03:10:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-11-28 03:10:07,926 INFO L87 Difference]: Start difference. First operand 117 states and 183 transitions. Second operand 28 states. [2020-11-28 03:10:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:08,422 INFO L93 Difference]: Finished difference Result 153 states and 269 transitions. [2020-11-28 03:10:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 03:10:08,423 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2020-11-28 03:10:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:08,427 INFO L225 Difference]: With dead ends: 153 [2020-11-28 03:10:08,427 INFO L226 Difference]: Without dead ends: 149 [2020-11-28 03:10:08,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2020-11-28 03:10:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-28 03:10:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2020-11-28 03:10:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 03:10:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 217 transitions. [2020-11-28 03:10:08,489 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 217 transitions. Word has length 106 [2020-11-28 03:10:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:08,491 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 217 transitions. [2020-11-28 03:10:08,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-28 03:10:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 217 transitions. [2020-11-28 03:10:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 03:10:08,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:08,497 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:08,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:10:08,712 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:08,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:08,712 INFO L82 PathProgramCache]: Analyzing trace with hash -738302103, now seen corresponding path program 4 times [2020-11-28 03:10:08,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:08,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223779768] [2020-11-28 03:10:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-28 03:10:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 56 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-28 03:10:09,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223779768] [2020-11-28 03:10:09,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481208429] [2020-11-28 03:10:09,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:09,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:10:09,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:10:09,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 55 proven. 61 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-11-28 03:10:09,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:09,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2020-11-28 03:10:09,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072651697] [2020-11-28 03:10:09,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:10:09,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:10:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:10:09,326 INFO L87 Difference]: Start difference. First operand 130 states and 217 transitions. Second operand 17 states. [2020-11-28 03:10:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:10,309 INFO L93 Difference]: Finished difference Result 302 states and 636 transitions. [2020-11-28 03:10:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-28 03:10:10,310 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-11-28 03:10:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:10,313 INFO L225 Difference]: With dead ends: 302 [2020-11-28 03:10:10,313 INFO L226 Difference]: Without dead ends: 133 [2020-11-28 03:10:10,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2020-11-28 03:10:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-28 03:10:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 123. [2020-11-28 03:10:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-28 03:10:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-11-28 03:10:10,345 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 107 [2020-11-28 03:10:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:10,345 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-11-28 03:10:10,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:10:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-11-28 03:10:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 03:10:10,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:10,349 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:10,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:10,573 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:10,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2057361993, now seen corresponding path program 5 times [2020-11-28 03:10:10,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:10,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900548131] [2020-11-28 03:10:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-11-28 03:10:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 89 proven. 150 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-11-28 03:10:11,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900548131] [2020-11-28 03:10:11,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731620978] [2020-11-28 03:10:11,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:11,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-11-28 03:10:11,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:10:11,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:10:11,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 118 proven. 134 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2020-11-28 03:10:11,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:11,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-11-28 03:10:11,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268616524] [2020-11-28 03:10:11,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:10:11,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:11,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:10:11,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:10:11,327 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 20 states. [2020-11-28 03:10:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:12,486 INFO L93 Difference]: Finished difference Result 260 states and 393 transitions. [2020-11-28 03:10:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-28 03:10:12,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-11-28 03:10:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:12,490 INFO L225 Difference]: With dead ends: 260 [2020-11-28 03:10:12,490 INFO L226 Difference]: Without dead ends: 138 [2020-11-28 03:10:12,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=1386, Unknown=0, NotChecked=0, Total=1640 [2020-11-28 03:10:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-28 03:10:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 119. [2020-11-28 03:10:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 03:10:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-28 03:10:12,515 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 133 [2020-11-28 03:10:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:12,515 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-28 03:10:12,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:10:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-28 03:10:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-28 03:10:12,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:12,518 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:12,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:10:12,732 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash -808293890, now seen corresponding path program 1 times [2020-11-28 03:10:12,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:12,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070785338] [2020-11-28 03:10:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:10:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-28 03:10:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-11-28 03:10:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-11-28 03:10:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:10:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-28 03:10:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-28 03:10:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-11-28 03:10:13,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070785338] [2020-11-28 03:10:13,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457167337] [2020-11-28 03:10:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/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 [2020-11-28 03:10:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:13,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:10:13,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:10:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 133 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 03:10:13,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:10:13,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2020-11-28 03:10:13,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068048871] [2020-11-28 03:10:13,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 03:10:13,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:13,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 03:10:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:10:13,318 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 16 states. [2020-11-28 03:10:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:13,722 INFO L93 Difference]: Finished difference Result 223 states and 311 transitions. [2020-11-28 03:10:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:10:13,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 120 [2020-11-28 03:10:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:13,724 INFO L225 Difference]: With dead ends: 223 [2020-11-28 03:10:13,724 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:10:13,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:10:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:10:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:10:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:10:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:10:13,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-11-28 03:10:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:13,727 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:10:13,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 03:10:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:10:13,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:10:13,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:10:13,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:10:15,147 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 24 [2020-11-28 03:10:15,278 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 6 [2020-11-28 03:10:15,817 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2020-11-28 03:10:15,917 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:10:15,917 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:10:15,917 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:10:15,917 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:10:15,917 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L270 CegarLoopResult]: At program point L43(lines 37 44) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~x~0) [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 5 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 5)) [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:10:15,918 INFO L277 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2020-11-28 03:10:15,918 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 2))) [2020-11-28 03:10:15,918 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= 1 |fibo2_#t~ret9|)) (and (<= 4 fibo2_~n) .cse0))) (or (<= |fibo2_#in~n| 3) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= 5 |fibo2_#in~n|)) (not (<= |fibo2_#in~n| 2))) [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L277 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2020-11-28 03:10:15,919 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (<= 2 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|)) [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-28 03:10:15,919 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 3)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0)) (or (and .cse0 (<= 3 |fibo1_#in~n|)) (and (<= |fibo1_#in~n| 2) (<= 2 |fibo1_#in~n|))) (or (<= |fibo1_#in~n| 4) (and (<= 3 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 3)) (<= 6 |fibo1_#in~n|)))) [2020-11-28 03:10:15,919 INFO L274 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-11-28 03:10:15,920 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-11-28 03:10:15,920 INFO L274 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2020-11-28 03:10:15,920 INFO L274 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed. [2020-11-28 03:10:15,920 INFO L274 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2020-11-28 03:10:15,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:15 BoogieIcfgContainer [2020-11-28 03:10:15,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:15,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:15,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:15,936 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:15,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:56" (3/4) ... [2020-11-28 03:10:15,939 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:10:15,945 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2020-11-28 03:10:15,945 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2020-11-28 03:10:15,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:10:15,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:10:15,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:15,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:16,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c909ded3-ac1c-4734-b1b1-82f1fd907525/bin/uautomizer/witness.graphml [2020-11-28 03:10:16,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:16,007 INFO L168 Benchmark]: Toolchain (without parser) took 20872.91 ms. Allocated memory was 75.5 MB in the beginning and 243.3 MB in the end (delta: 167.8 MB). Free memory was 43.3 MB in the beginning and 132.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 77.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,007 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 24.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:16,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.07 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.1 MB in the beginning and 71.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.67 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 70.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:16,009 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 69.2 MB in the end (delta: 924.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,009 INFO L168 Benchmark]: RCFGBuilder took 599.78 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 56.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,010 INFO L168 Benchmark]: TraceAbstraction took 19776.25 ms. Allocated memory was 92.3 MB in the beginning and 243.3 MB in the end (delta: 151.0 MB). Free memory was 56.0 MB in the beginning and 135.7 MB in the end (delta: -79.7 MB). Peak memory consumption was 131.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,011 INFO L168 Benchmark]: Witness Printer took 70.21 ms. Allocated memory is still 243.3 MB. Free memory was 135.7 MB in the beginning and 132.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:16,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 24.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.07 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.1 MB in the beginning and 71.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.67 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 70.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.65 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 69.2 MB in the end (delta: 924.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 599.78 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 56.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19776.25 ms. Allocated memory was 92.3 MB in the beginning and 243.3 MB in the end (delta: 151.0 MB). Free memory was 56.0 MB in the beginning and 135.7 MB in the end (delta: -79.7 MB). Peak memory consumption was 131.1 MB. Max. memory is 16.1 GB. * Witness Printer took 70.21 ms. Allocated memory is still 243.3 MB. Free memory was 135.7 MB in the beginning and 132.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 5 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.7s, OverallIterations: 13, TraceHistogramMax: 10, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 389 SDtfs, 543 SDslu, 3051 SDs, 0 SdLazy, 3801 SolverSat, 546 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1294 GetRequests, 1039 SyntacticMatches, 10 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 142 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 557 PreInvPairs, 822 NumberOfFragments, 109 HoareAnnotationTreeSize, 557 FomulaSimplifications, 7652 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3967 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 1665 NumberOfCodeBlocks, 1600 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1641 ConstructedInterpolants, 0 QuantifiedInterpolants, 314863 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1928 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 2527/3582 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...