./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant.i --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_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 ......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:59:29,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:29,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:29,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:29,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:29,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:29,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:29,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:29,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:29,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:29,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:29,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:29,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:29,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:29,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:29,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:29,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:29,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:29,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:29,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:29,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:29,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:29,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:29,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:29,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:29,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:29,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:29,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:29,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:29,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:29,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:29,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:29,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:29,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:29,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:29,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:29,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:29,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:29,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:29,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:29,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:29,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:59:29,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:29,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:29,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:29,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:29,581 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:29,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:29,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:59:29,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:59:29,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:59:29,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:29,583 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:29,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:59:29,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:29,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:29,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:59:29,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:59:29,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:59:29,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:29,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:59:29,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:59:29,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:29,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:59:29,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:59:29,585 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_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 -> 2c35b63020039b8235bc0a118d8fbb9fe59d3a09 [2019-10-22 08:59:29,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:29,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:29,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:29,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:29,629 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:29,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-10-22 08:59:29,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/data/aeab74411/ae4752914e714cf09924fb259abc7efb/FLAGef4f6f0dc [2019-10-22 08:59:30,049 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:30,049 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/sv-benchmarks/c/loop-new/count_by_1_variant.i [2019-10-22 08:59:30,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/data/aeab74411/ae4752914e714cf09924fb259abc7efb/FLAGef4f6f0dc [2019-10-22 08:59:30,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/data/aeab74411/ae4752914e714cf09924fb259abc7efb [2019-10-22 08:59:30,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:30,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:30,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:30,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:30,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:30,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3ed366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30, skipping insertion in model container [2019-10-22 08:59:30,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,084 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:30,098 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:30,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:30,225 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:30,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:30,310 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:30,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30 WrapperNode [2019-10-22 08:59:30,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:30,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:30,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:30,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:30,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:30,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:30,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:30,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:30,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:30,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:30,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:30,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:30,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 08:59:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:30,547 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:30,548 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:59:30,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:30 BoogieIcfgContainer [2019-10-22 08:59:30,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:30,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:59:30,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:59:30,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:59:30,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:59:30" (1/3) ... [2019-10-22 08:59:30,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28418703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:30, skipping insertion in model container [2019-10-22 08:59:30,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (2/3) ... [2019-10-22 08:59:30,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28418703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:59:30, skipping insertion in model container [2019-10-22 08:59:30,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:30" (3/3) ... [2019-10-22 08:59:30,555 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-10-22 08:59:30,564 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:59:30,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:59:30,580 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:59:30,601 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:59:30,601 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:59:30,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:59:30,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:30,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:30,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:59:30,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:30,601 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:59:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 08:59:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:59:30,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,616 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:59:30,617 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,622 INFO L82 PathProgramCache]: Analyzing trace with hash 962347, now seen corresponding path program 1 times [2019-10-22 08:59:30,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324476865] [2019-10-22 08:59:30,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,766 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 08:59:30,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324476865] [2019-10-22 08:59:30,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:30,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:59:30,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462725806] [2019-10-22 08:59:30,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:59:30,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:59:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:59:30,788 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-10-22 08:59:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:30,836 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-10-22 08:59:30,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:59:30,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 08:59:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:30,850 INFO L225 Difference]: With dead ends: 26 [2019-10-22 08:59:30,850 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 08:59:30,853 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 08:59:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 08:59:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-10-22 08:59:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:59:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-10-22 08:59:30,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2019-10-22 08:59:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:30,897 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-10-22 08:59:30,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:59:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-10-22 08:59:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:59:30,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:30,898 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-10-22 08:59:30,898 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:30,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1390656418, now seen corresponding path program 1 times [2019-10-22 08:59:30,898 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:30,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123512049] [2019-10-22 08:59:30,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:30,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:30,975 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 08:59:30,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123512049] [2019-10-22 08:59:30,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915303069] [2019-10-22 08:59:30,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 08:59:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:31,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:59:31,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:31,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:31,063 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 08:59:31,064 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:31,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-10-22 08:59:31,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726256997] [2019-10-22 08:59:31,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:59:31,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:59:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:59:31,068 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-10-22 08:59:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:31,146 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-10-22 08:59:31,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:59:31,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-10-22 08:59:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:31,147 INFO L225 Difference]: With dead ends: 15 [2019-10-22 08:59:31,147 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 08:59:31,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:59:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 08:59:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-10-22 08:59:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:59:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-10-22 08:59:31,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2019-10-22 08:59:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:31,153 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-10-22 08:59:31,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:59:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-10-22 08:59:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:59:31,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:31,154 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-10-22 08:59:31,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:31,355 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:31,356 INFO L82 PathProgramCache]: Analyzing trace with hash 214023755, now seen corresponding path program 2 times [2019-10-22 08:59:31,356 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:31,356 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202816617] [2019-10-22 08:59:31,356 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,356 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:31,407 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 08:59:31,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202816617] [2019-10-22 08:59:31,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657227581] [2019-10-22 08:59:31,408 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 08:59:31,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:59:31,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:59:31,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:59:31,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:31,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:31,463 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 08:59:31,464 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:31,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-10-22 08:59:31,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996964752] [2019-10-22 08:59:31,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:59:31,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:59:31,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:59:31,466 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2019-10-22 08:59:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:31,558 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-22 08:59:31,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:59:31,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-10-22 08:59:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:31,559 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:59:31,559 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 08:59:31,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:59:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 08:59:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-10-22 08:59:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:59:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-22 08:59:31,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2019-10-22 08:59:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:31,565 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-22 08:59:31,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:59:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-22 08:59:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:59:31,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:59:31,566 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-10-22 08:59:31,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:31,770 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:59:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2039914178, now seen corresponding path program 3 times [2019-10-22 08:59:31,771 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:31,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529816596] [2019-10-22 08:59:31,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:31,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529816596] [2019-10-22 08:59:31,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733579267] [2019-10-22 08:59:31,834 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/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 08:59:31,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 08:59:31,859 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:59:31,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 08:59:31,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:31,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:31,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:59:31,923 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:59:31,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-10-22 08:59:31,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038002793] [2019-10-22 08:59:31,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:59:31,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:31,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:59:31,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:59:31,925 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-10-22 08:59:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:32,086 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-22 08:59:32,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:59:32,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-10-22 08:59:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:59:32,087 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:59:32,087 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:59:32,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:59:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:59:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:59:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:59:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:59:32,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-22 08:59:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:59:32,089 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:32,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:59:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:32,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:59:32,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:59:32,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:59:32,413 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,413 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:59:32,414 INFO L439 ceAbstractionStarter]: At program point L15(lines 10 16) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2019-10-22 08:59:32,414 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 08:59:32,414 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,414 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:59:32,414 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) (<= ULTIMATE.start_main_~i~0 0)) [2019-10-22 08:59:32,415 INFO L443 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2019-10-22 08:59:32,415 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:59:32,415 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 1 16) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~i~0 1000000)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) [2019-10-22 08:59:32,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:59:32 BoogieIcfgContainer [2019-10-22 08:59:32,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:59:32,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:32,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:32,431 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:32,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:30" (3/4) ... [2019-10-22 08:59:32,436 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:59:32,448 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 08:59:32,448 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:59:32,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e5177cdd-77a7-421d-8850-38ef82f33b8c/bin/uautomizer/witness.graphml [2019-10-22 08:59:32,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:32,495 INFO L168 Benchmark]: Toolchain (without parser) took 2425.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -55.4 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,496 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:32,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.24 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 08:59:32,497 INFO L168 Benchmark]: Boogie Preprocessor took 18.10 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 08:59:32,498 INFO L168 Benchmark]: RCFGBuilder took 188.71 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,498 INFO L168 Benchmark]: TraceAbstraction took 1880.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 121.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:32,499 INFO L168 Benchmark]: Witness Printer took 61.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:32,502 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.24 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 18.10 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. * RCFGBuilder took 188.71 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1880.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 121.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 11.5 GB. * Witness Printer took 61.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: i <= 1000000 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (1 == cond && i <= 1000000) || i <= 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(i == 1000000) && 1 == cond) && i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 18 SDtfs, 49 SDslu, 29 SDs, 0 SdLazy, 57 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 434 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1605 SizeOfPredicates, 11 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 14/48 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...