./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/large_const_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/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 b03e1cb325e2c3a8ef30197a8e07012b3a728d97 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:25:24,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:25:24,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:25:24,674 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:25:24,674 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:25:24,675 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:25:24,676 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:25:24,677 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:25:24,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:25:24,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:25:24,679 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:25:24,679 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:25:24,680 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:25:24,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:25:24,681 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:25:24,682 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:25:24,682 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:25:24,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:25:24,685 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:25:24,686 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:25:24,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:25:24,687 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:25:24,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:25:24,689 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:25:24,689 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:25:24,690 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:25:24,691 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:25:24,691 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:25:24,692 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:25:24,693 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:25:24,693 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:25:24,693 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:25:24,694 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:25:24,694 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:25:24,694 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:25:24,695 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:25:24,695 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 15:25:24,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:25:24,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:25:24,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:25:24,706 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:25:24,707 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:25:24,707 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:25:24,707 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:25:24,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:25:24,707 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:25:24,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:25:24,708 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:25:24,709 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:25:24,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:25:24,710 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:25:24,710 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/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 -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 [2018-11-23 15:25:24,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:25:24,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:25:24,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:25:24,747 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:25:24,748 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:25:24,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-11-23 15:25:24,791 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/data/0db7c349a/621fdaa0a4ec48d0960481bc17d5763c/FLAGd1c380133 [2018-11-23 15:25:25,098 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:25:25,099 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/sv-benchmarks/c/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-11-23 15:25:25,104 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/data/0db7c349a/621fdaa0a4ec48d0960481bc17d5763c/FLAGd1c380133 [2018-11-23 15:25:25,114 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/data/0db7c349a/621fdaa0a4ec48d0960481bc17d5763c [2018-11-23 15:25:25,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:25:25,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:25:25,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:25:25,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:25:25,120 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:25:25,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25, skipping insertion in model container [2018-11-23 15:25:25,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:25:25,142 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:25:25,253 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:25:25,255 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:25:25,268 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:25:25,278 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:25:25,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25 WrapperNode [2018-11-23 15:25:25,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:25:25,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:25:25,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:25:25,279 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:25:25,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:25:25,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:25:25,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:25:25,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:25:25,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... [2018-11-23 15:25:25,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:25:25,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:25:25,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:25:25,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:25:25,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/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 [2018-11-23 15:25:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:25:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:25:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:25:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:25:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:25:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:25:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 15:25:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 15:25:25,512 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:25:25,512 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 15:25:25,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:25 BoogieIcfgContainer [2018-11-23 15:25:25,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:25:25,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:25:25,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:25:25,516 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:25:25,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:25:25" (1/3) ... [2018-11-23 15:25:25,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1173d11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:25, skipping insertion in model container [2018-11-23 15:25:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:25" (2/3) ... [2018-11-23 15:25:25,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1173d11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:25, skipping insertion in model container [2018-11-23 15:25:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:25" (3/3) ... [2018-11-23 15:25:25,520 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-11-23 15:25:25,528 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:25:25,533 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 15:25:25,543 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 15:25:25,560 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:25:25,561 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:25:25,561 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:25:25,561 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:25:25,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:25:25,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:25:25,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:25:25,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:25:25,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:25:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-23 15:25:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 15:25:25,582 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:25,582 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:25,584 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:25,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2018-11-23 15:25:25,589 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:25,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:25,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:25,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:25,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:25:25,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 15:25:25,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 15:25:25,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 15:25:25,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 15:25:25,684 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-23 15:25:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:25,700 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-11-23 15:25:25,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 15:25:25,701 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-23 15:25:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:25,707 INFO L225 Difference]: With dead ends: 40 [2018-11-23 15:25:25,707 INFO L226 Difference]: Without dead ends: 20 [2018-11-23 15:25:25,710 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 15:25:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-23 15:25:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-23 15:25:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 15:25:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-11-23 15:25:25,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2018-11-23 15:25:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:25,736 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-23 15:25:25,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 15:25:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-11-23 15:25:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 15:25:25,737 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:25,737 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:25,737 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:25,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:25,738 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2018-11-23 15:25:25,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:25,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:25,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:25,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:25,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:25:25,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 15:25:25,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 15:25:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 15:25:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:25:25,803 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2018-11-23 15:25:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:25,857 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-23 15:25:25,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 15:25:25,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 15:25:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:25,858 INFO L225 Difference]: With dead ends: 32 [2018-11-23 15:25:25,858 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 15:25:25,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 15:25:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 15:25:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 15:25:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 15:25:25,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-23 15:25:25,861 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2018-11-23 15:25:25,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:25,862 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-23 15:25:25,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 15:25:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-11-23 15:25:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 15:25:25,862 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:25,862 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:25,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:25,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:25,863 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2018-11-23 15:25:25,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:25,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:25,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:25,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:25,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:25:25,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:25:25,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:25,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:25:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:25:26,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-23 15:25:26,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 15:25:26,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 15:25:26,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 15:25:26,060 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 8 states. [2018-11-23 15:25:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:26,139 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-11-23 15:25:26,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 15:25:26,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-23 15:25:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:26,140 INFO L225 Difference]: With dead ends: 41 [2018-11-23 15:25:26,140 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 15:25:26,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:25:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 15:25:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2018-11-23 15:25:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-23 15:25:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-11-23 15:25:26,148 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2018-11-23 15:25:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:26,148 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-11-23 15:25:26,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 15:25:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-11-23 15:25:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 15:25:26,149 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:26,149 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:26,149 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:26,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2018-11-23 15:25:26,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:26,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:26,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:25:26,207 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:25:26,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:25:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:25:26,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-23 15:25:26,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 15:25:26,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 15:25:26,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 15:25:26,313 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 8 states. [2018-11-23 15:25:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:26,432 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2018-11-23 15:25:26,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 15:25:26,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-23 15:25:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:26,434 INFO L225 Difference]: With dead ends: 51 [2018-11-23 15:25:26,434 INFO L226 Difference]: Without dead ends: 49 [2018-11-23 15:25:26,434 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:25:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-23 15:25:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2018-11-23 15:25:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 15:25:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-23 15:25:26,439 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2018-11-23 15:25:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:26,440 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-23 15:25:26,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 15:25:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2018-11-23 15:25:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 15:25:26,441 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:26,442 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:26,442 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:26,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:26,442 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2018-11-23 15:25:26,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:26,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:26,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:25:26,502 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:25:26,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:25:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:25:26,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-23 15:25:26,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 15:25:26,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 15:25:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 15:25:26,585 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 8 states. [2018-11-23 15:25:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:26,658 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2018-11-23 15:25:26,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 15:25:26,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-23 15:25:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:26,660 INFO L225 Difference]: With dead ends: 55 [2018-11-23 15:25:26,660 INFO L226 Difference]: Without dead ends: 53 [2018-11-23 15:25:26,660 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:25:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-23 15:25:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2018-11-23 15:25:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-23 15:25:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2018-11-23 15:25:26,666 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2018-11-23 15:25:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:26,666 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2018-11-23 15:25:26,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 15:25:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2018-11-23 15:25:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 15:25:26,667 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:26,667 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:26,667 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:26,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2018-11-23 15:25:26,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:26,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:26,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:25:26,726 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:25:26,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:25:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:25:26,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-11-23 15:25:26,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 15:25:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 15:25:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:25:26,797 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 6 states. [2018-11-23 15:25:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:26,814 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2018-11-23 15:25:26,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 15:25:26,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-23 15:25:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:26,814 INFO L225 Difference]: With dead ends: 61 [2018-11-23 15:25:26,815 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 15:25:26,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:25:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 15:25:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-23 15:25:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 15:25:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-23 15:25:26,820 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2018-11-23 15:25:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:26,820 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-23 15:25:26,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 15:25:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-23 15:25:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 15:25:26,823 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:25:26,823 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:25:26,823 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:25:26,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:25:26,823 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2018-11-23 15:25:26,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:25:26,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:25:26,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:25:26,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:25:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:25:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:25:26,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:25:26,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 15:25:26,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 15:25:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 15:25:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:25:26,859 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-11-23 15:25:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:25:26,882 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-11-23 15:25:26,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 15:25:26,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-23 15:25:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:25:26,883 INFO L225 Difference]: With dead ends: 29 [2018-11-23 15:25:26,883 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:25:26,883 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-23 15:25:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:25:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:25:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:25:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:25:26,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-11-23 15:25:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:25:26,884 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:25:26,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 15:25:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:25:26,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:25:26,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:25:27,084 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:25:27,085 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:25:27,085 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:25:27,085 INFO L444 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 1) (<= main_~n~0 (+ main_~j~0 1))) [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-11-23 15:25:27,085 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L444 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse0 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse5 (<= main_~n~0 main_~j~0))) (or (and .cse0 (and .cse1 (and .cse2 .cse3 (<= 2000 main_~k~0))) .cse4 (<= main_~n~0 (+ main_~j~0 1))) (and (<= main_~n~0 0) (<= main_~i~0 0) .cse5) (and .cse1 .cse2 .cse3 .cse0 .cse4 .cse5))) [2018-11-23 15:25:27,086 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-11-23 15:25:27,086 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (<= main_~n~0 1)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2018-11-23 15:25:27,086 INFO L448 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2018-11-23 15:25:27,087 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 15:25:27,087 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 15:25:27,087 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 15:25:27,087 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 15:25:27,087 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 15:25:27,087 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 15:25:27,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:25:27 BoogieIcfgContainer [2018-11-23 15:25:27,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:25:27,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:25:27,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:25:27,099 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:25:27,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:25" (3/4) ... [2018-11-23 15:25:27,102 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:25:27,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:25:27,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:25:27,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 15:25:27,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-23 15:25:27,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 15:25:27,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:25:27,144 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1bfa7cda-7b2f-46cf-ac99-5e7f452011ad/bin-2019/uautomizer/witness.graphml [2018-11-23 15:25:27,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:25:27,145 INFO L168 Benchmark]: Toolchain (without parser) took 2028.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 959.3 MB in the beginning and 945.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 180.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,146 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:25:27,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.83 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,148 INFO L168 Benchmark]: Boogie Preprocessor took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:25:27,149 INFO L168 Benchmark]: RCFGBuilder took 205.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -200.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,149 INFO L168 Benchmark]: TraceAbstraction took 1584.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.5 MB in the end (delta: 197.9 MB). Peak memory consumption was 197.9 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,149 INFO L168 Benchmark]: Witness Printer took 46.10 ms. Allocated memory is still 1.2 GB. Free memory was 948.5 MB in the beginning and 945.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:25:27,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.83 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.10 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 205.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -200.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1584.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 948.5 MB in the end (delta: 197.9 MB). Peak memory consumption was 197.9 MB. Max. memory is 11.5 GB. * Witness Printer took 46.10 ms. Allocated memory is still 1.2 GB. Free memory was 948.5 MB in the beginning and 945.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. 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: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n <= 1) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((1 <= i && 10000 <= c3 && (2000 <= c2 && 4000 <= c1) && 2000 <= k) && n <= 1) && n <= j + 1) || ((n <= 0 && i <= 0) && n <= j)) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && n <= 1) && n <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 168 SDtfs, 114 SDslu, 380 SDs, 0 SdLazy, 214 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 127 HoareAnnotationTreeSize, 13 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 6982 SizeOfPredicates, 10 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 14/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...