./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/lcm1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/lcm1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0b3a9caad713ebd72887f9e9cd431c5959da7f7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:38,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:38,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:38,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:38,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:38,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:38,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:38,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:38,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:38,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:38,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:38,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:38,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:38,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:38,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:38,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:38,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:38,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:38,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:38,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:38,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:38,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:38,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:38,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:38,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:38,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:38,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:38,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:38,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:38,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:38,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:38,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:38,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:38,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:38,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:38,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:38,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:38,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:38,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:38,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:38,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:38,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:38,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:38,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:38,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:38,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:38,495 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:38,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:38,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:38,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:38,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:38,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:38,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:38,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:38,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:38,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:38,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:38,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:38,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:38,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:38,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:38,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:38,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:38,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:38,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/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(__VERIFIER_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 -> d0b3a9caad713ebd72887f9e9cd431c5959da7f7 [2019-10-22 09:00:38,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:38,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:38,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:38,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:38,553 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:38,554 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/lcm1.c [2019-10-22 09:00:38,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/data/49e6f65fb/e5bfef6a9e1d41b58922b5d71b6a4fcf/FLAGbd792f8af [2019-10-22 09:00:39,009 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:39,010 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/sv-benchmarks/c/nla-digbench/lcm1.c [2019-10-22 09:00:39,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/data/49e6f65fb/e5bfef6a9e1d41b58922b5d71b6a4fcf/FLAGbd792f8af [2019-10-22 09:00:39,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/data/49e6f65fb/e5bfef6a9e1d41b58922b5d71b6a4fcf [2019-10-22 09:00:39,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:39,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:39,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:39,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:39,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:39,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee5e1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39, skipping insertion in model container [2019-10-22 09:00:39,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:39,062 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:39,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:39,220 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:39,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:39,315 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:39,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39 WrapperNode [2019-10-22 09:00:39,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:39,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:39,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:39,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:39,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:39,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:39,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:39,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:39,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... [2019-10-22 09:00:39,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:39,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:39,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:39,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:39,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:39,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:39,694 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:39,694 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-10-22 09:00:39,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:39 BoogieIcfgContainer [2019-10-22 09:00:39,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:39,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:39,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:39,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:39,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:39" (1/3) ... [2019-10-22 09:00:39,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d41f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:39, skipping insertion in model container [2019-10-22 09:00:39,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:39" (2/3) ... [2019-10-22 09:00:39,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d41f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:39, skipping insertion in model container [2019-10-22 09:00:39,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:39" (3/3) ... [2019-10-22 09:00:39,709 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm1.c [2019-10-22 09:00:39,718 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:39,725 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 09:00:39,735 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 09:00:39,755 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:39,755 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:39,755 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:39,755 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:39,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:39,756 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:39,756 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:39,756 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-22 09:00:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 09:00:39,775 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:39,775 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 09:00:39,777 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-10-22 09:00:39,790 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:39,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096696234] [2019-10-22 09:00:39,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:39,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:39,873 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:39,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876797256] [2019-10-22 09:00:39,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:39,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 09:00:39,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:39,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096696234] [2019-10-22 09:00:39,987 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:39,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876797256] [2019-10-22 09:00:39,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:39,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:39,988 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703626799] [2019-10-22 09:00:39,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:00:39,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:00:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:00:40,006 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2019-10-22 09:00:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:40,121 INFO L93 Difference]: Finished difference Result 78 states and 121 transitions. [2019-10-22 09:00:40,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:40,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 09:00:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:40,130 INFO L225 Difference]: With dead ends: 78 [2019-10-22 09:00:40,130 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 09:00:40,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 09:00:40,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2019-10-22 09:00:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 09:00:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-22 09:00:40,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 4 [2019-10-22 09:00:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:40,164 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-22 09:00:40,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:00:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-22 09:00:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 09:00:40,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:40,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:40,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:40,366 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1360971675, now seen corresponding path program 1 times [2019-10-22 09:00:40,366 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:40,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778517926] [2019-10-22 09:00:40,367 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,367 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:40,372 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:40,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291921807] [2019-10-22 09:00:40,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:40,401 WARN L254 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-22 09:00:40,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:40,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778517926] [2019-10-22 09:00:40,466 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:40,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291921807] [2019-10-22 09:00:40,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:40,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:40,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915039379] [2019-10-22 09:00:40,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:40,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:40,472 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2019-10-22 09:00:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:42,915 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2019-10-22 09:00:42,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:42,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 09:00:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:42,916 INFO L225 Difference]: With dead ends: 53 [2019-10-22 09:00:42,916 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 09:00:42,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 09:00:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-22 09:00:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:00:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-22 09:00:42,924 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 7 [2019-10-22 09:00:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:42,924 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-22 09:00:42,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-22 09:00:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:42,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:42,925 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:43,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:43,126 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 144102828, now seen corresponding path program 1 times [2019-10-22 09:00:43,127 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:43,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936416451] [2019-10-22 09:00:43,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:43,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:43,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:43,136 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:43,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873500692] [2019-10-22 09:00:43,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:43,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-22 09:00:43,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:43,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:43,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936416451] [2019-10-22 09:00:43,209 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:43,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873500692] [2019-10-22 09:00:43,210 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:43,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-10-22 09:00:43,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779530493] [2019-10-22 09:00:43,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:43,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:43,211 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2019-10-22 09:00:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:43,351 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2019-10-22 09:00:43,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:43,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 09:00:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:43,353 INFO L225 Difference]: With dead ends: 69 [2019-10-22 09:00:43,353 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 09:00:43,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 09:00:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2019-10-22 09:00:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:00:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2019-10-22 09:00:43,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 10 [2019-10-22 09:00:43,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:43,361 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2019-10-22 09:00:43,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2019-10-22 09:00:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:00:43,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:43,362 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:43,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:43,563 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1994997677, now seen corresponding path program 2 times [2019-10-22 09:00:43,563 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:43,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739191586] [2019-10-22 09:00:43,563 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:43,563 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:43,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:43,573 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:43,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908619676] [2019-10-22 09:00:43,574 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:43,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:43,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:43,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 09:00:43,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:43,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:43,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739191586] [2019-10-22 09:00:43,693 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:43,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908619676] [2019-10-22 09:00:43,693 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:43,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-22 09:00:43,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325249220] [2019-10-22 09:00:43,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:43,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:43,697 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2019-10-22 09:00:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:43,938 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2019-10-22 09:00:43,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:43,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-22 09:00:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:43,939 INFO L225 Difference]: With dead ends: 86 [2019-10-22 09:00:43,939 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 09:00:43,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:43,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 09:00:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2019-10-22 09:00:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 09:00:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2019-10-22 09:00:43,955 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 13 [2019-10-22 09:00:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:43,955 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2019-10-22 09:00:43,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2019-10-22 09:00:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:00:43,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:43,956 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:44,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:44,160 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:44,161 INFO L82 PathProgramCache]: Analyzing trace with hash 786595916, now seen corresponding path program 3 times [2019-10-22 09:00:44,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:44,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701276639] [2019-10-22 09:00:44,162 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:44,162 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:44,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:44,170 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:44,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7206297] [2019-10-22 09:00:44,170 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:44,214 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 09:00:44,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:44,215 WARN L254 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 09:00:44,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:44,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:44,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 09:00:44,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701276639] [2019-10-22 09:00:44,298 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:44,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7206297] [2019-10-22 09:00:44,299 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:44,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-22 09:00:44,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750405927] [2019-10-22 09:00:44,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:44,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:44,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:44,300 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 6 states. [2019-10-22 09:00:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:44,413 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2019-10-22 09:00:44,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:44,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 09:00:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:44,415 INFO L225 Difference]: With dead ends: 86 [2019-10-22 09:00:44,415 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 09:00:44,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 09:00:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 51. [2019-10-22 09:00:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:00:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2019-10-22 09:00:44,423 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 16 [2019-10-22 09:00:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:44,423 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2019-10-22 09:00:44,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2019-10-22 09:00:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:00:44,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:44,424 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:44,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:44,626 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:44,627 INFO L82 PathProgramCache]: Analyzing trace with hash -219241590, now seen corresponding path program 1 times [2019-10-22 09:00:44,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:44,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43822282] [2019-10-22 09:00:44,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:44,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:44,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:44,664 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:44,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136542420] [2019-10-22 09:00:44,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:44,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 09:00:44,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:44,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:44,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43822282] [2019-10-22 09:00:44,777 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:44,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136542420] [2019-10-22 09:00:44,777 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:44,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-10-22 09:00:44,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380171977] [2019-10-22 09:00:44,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:44,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:44,779 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2019-10-22 09:00:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:44,985 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2019-10-22 09:00:44,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:44,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 09:00:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:44,986 INFO L225 Difference]: With dead ends: 96 [2019-10-22 09:00:44,987 INFO L226 Difference]: Without dead ends: 90 [2019-10-22 09:00:44,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-22 09:00:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2019-10-22 09:00:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-22 09:00:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2019-10-22 09:00:44,996 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 16 [2019-10-22 09:00:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:44,996 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2019-10-22 09:00:44,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2019-10-22 09:00:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:00:44,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:44,997 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:45,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:45,198 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash -863521551, now seen corresponding path program 2 times [2019-10-22 09:00:45,198 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199930801] [2019-10-22 09:00:45,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,203 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:45,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53718453] [2019-10-22 09:00:45,204 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:45,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:45,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:45,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-22 09:00:45,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:45,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:45,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199930801] [2019-10-22 09:00:45,326 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:45,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53718453] [2019-10-22 09:00:45,326 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:00:45,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-22 09:00:45,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035331046] [2019-10-22 09:00:45,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:00:45,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:00:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:45,328 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 7 states. [2019-10-22 09:00:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:45,639 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2019-10-22 09:00:45,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:00:45,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 09:00:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:45,642 INFO L225 Difference]: With dead ends: 123 [2019-10-22 09:00:45,642 INFO L226 Difference]: Without dead ends: 117 [2019-10-22 09:00:45,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:00:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-22 09:00:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 78. [2019-10-22 09:00:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:00:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2019-10-22 09:00:45,660 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 19 [2019-10-22 09:00:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:45,661 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2019-10-22 09:00:45,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:00:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2019-10-22 09:00:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:00:45,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:45,662 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:45,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:45,862 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:45,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2030143529, now seen corresponding path program 1 times [2019-10-22 09:00:45,863 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:45,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-10-22 09:00:45,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:45,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:45,868 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:00:45,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202594310] [2019-10-22 09:00:45,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:45,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 09:00:45,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:45,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:46,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:00:46,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-10-22 09:00:46,062 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:00:46,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202594310] [2019-10-22 09:00:46,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:46,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:00:46,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271133969] [2019-10-22 09:00:46,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:46,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:46,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:46,064 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2019-10-22 09:00:59,996 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-10-22 09:01:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:08,140 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2019-10-22 09:01:08,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:08,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 09:01:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:08,141 INFO L225 Difference]: With dead ends: 192 [2019-10-22 09:01:08,141 INFO L226 Difference]: Without dead ends: 133 [2019-10-22 09:01:08,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=49, Invalid=82, Unknown=1, NotChecked=0, Total=132 [2019-10-22 09:01:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-10-22 09:01:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 40. [2019-10-22 09:01:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:01:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-10-22 09:01:08,151 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 19 [2019-10-22 09:01:08,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:08,151 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-10-22 09:01:08,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-10-22 09:01:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:01:08,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:08,152 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:08,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:08,352 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:08,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:08,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1052621190, now seen corresponding path program 1 times [2019-10-22 09:01:08,353 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:08,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507527414] [2019-10-22 09:01:08,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:08,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:08,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:08,356 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 09:01:08,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002704050] [2019-10-22 09:01:08,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:08,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:01:08,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:08,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:01:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:01:08,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507527414] [2019-10-22 09:01:08,404 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 09:01:08,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002704050] [2019-10-22 09:01:08,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:08,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:08,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123665279] [2019-10-22 09:01:08,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:08,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:08,405 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2019-10-22 09:01:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:08,449 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2019-10-22 09:01:08,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:08,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 09:01:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:08,450 INFO L225 Difference]: With dead ends: 65 [2019-10-22 09:01:08,450 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:08,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:08,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-22 09:01:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:08,451 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:08,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:08,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:08,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:08,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:01:08,922 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 35 41) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) [2019-10-22 09:01:08,922 INFO L443 ceAbstractionStarter]: For program point L10-9(lines 10 13) no Hoare annotation was computed. [2019-10-22 09:01:08,922 INFO L439 ceAbstractionStarter]: At program point L10-11(lines 9 15) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L10-12(lines 10 13) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L446 ceAbstractionStarter]: At program point L10-14(lines 9 15) the Hoare annotation is: true [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L11-3(lines 11 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L446 ceAbstractionStarter]: At program point L57(lines 17 58) the Hoare annotation is: true [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-22 09:01:08,923 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 50) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point L43-1(lines 30 50) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L439 ceAbstractionStarter]: At program point L43-2(lines 30 50) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~a~0)) (.cse1 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~v~0 0) .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1))) [2019-10-22 09:01:08,924 INFO L439 ceAbstractionStarter]: At program point L10-2(lines 32 33) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2019-10-22 09:01:08,924 INFO L439 ceAbstractionStarter]: At program point L10-5(lines 37 38) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) [2019-10-22 09:01:08,924 INFO L443 ceAbstractionStarter]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2019-10-22 09:01:08,925 INFO L439 ceAbstractionStarter]: At program point L10-8(lines 45 46) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) [2019-10-22 09:01:08,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:08 BoogieIcfgContainer [2019-10-22 09:01:08,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:08,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:08,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:08,939 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:08,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:39" (3/4) ... [2019-10-22 09:01:08,942 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:08,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-10-22 09:01:08,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:01:08,990 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5d639da3-9e52-4b62-8aa4-32ec01bc81d6/bin/uautomizer/witness.graphml [2019-10-22 09:01:08,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:08,991 INFO L168 Benchmark]: Toolchain (without parser) took 29960.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -101.0 MB). Peak memory consumption was 105.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,992 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:08,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:08,993 INFO L168 Benchmark]: Boogie Preprocessor took 17.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,993 INFO L168 Benchmark]: RCFGBuilder took 332.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,993 INFO L168 Benchmark]: TraceAbstraction took 29241.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.7 MB). Peak memory consumption was 119.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,994 INFO L168 Benchmark]: Witness Printer took 51.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:08,996 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 332.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29241.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.7 MB). Peak memory consumption was 119.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((y <= x && x <= y) && 1 == cond) && 1 <= a) && x * u + y * v == a * b - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (1 == cond && 1 <= a) && x * u + y * v == a * b - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 == cond && 1 <= a) && x * u + y * v == a * b - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (1 == cond && 1 <= a) && x * u + y * v == a * b - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (1 == cond && 1 <= a) && x * u + y * v == a * b - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((b == y && v == 0) && 1 <= a) && a == x) && x * u + y * v == a * b) || ((1 == cond && 1 <= a) && x * u + y * v == a * b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 5 error locations. Result: SAFE, OverallTime: 29.1s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 121 SDtfs, 319 SDslu, 352 SDs, 0 SdLazy, 869 SolverSat, 170 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 227 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 29 NumberOfFragments, 141 HoareAnnotationTreeSize, 8 FomulaSimplifications, 12945 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 125 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 116 ConstructedInterpolants, 4 QuantifiedInterpolants, 20861 SizeOfPredicates, 73 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 24/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...