./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.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_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/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 269d8c78f03cf287c7b740c1cbaca497af69bf0a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:57:22,666 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 03:57:22,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 03:57:22,675 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 03:57:22,675 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 03:57:22,676 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 03:57:22,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 03:57:22,678 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 03:57:22,679 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 03:57:22,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 03:57:22,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 03:57:22,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 03:57:22,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 03:57:22,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 03:57:22,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 03:57:22,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 03:57:22,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 03:57:22,685 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 03:57:22,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 03:57:22,687 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 03:57:22,688 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 03:57:22,689 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 03:57:22,691 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 03:57:22,691 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 03:57:22,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 03:57:22,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 03:57:22,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 03:57:22,693 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 03:57:22,694 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 03:57:22,695 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 03:57:22,695 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 03:57:22,695 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 03:57:22,696 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 03:57:22,696 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 03:57:22,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 03:57:22,697 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 03:57:22,697 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 03:57:22,704 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 03:57:22,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 03:57:22,705 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 03:57:22,705 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 03:57:22,705 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 03:57:22,705 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 03:57:22,705 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 03:57:22,705 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 03:57:22,706 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 03:57:22,707 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 03:57:22,707 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 03:57:22,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 03:57:22,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 03:57:22,709 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_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/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 -> 269d8c78f03cf287c7b740c1cbaca497af69bf0a [2018-11-23 03:57:22,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 03:57:22,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 03:57:22,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 03:57:22,746 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 03:57:22,746 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 03:57:22,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-23 03:57:22,784 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/data/87c2b7847/ecb60a25bd334ec180e722c09d8b7e87/FLAG42f438b12 [2018-11-23 03:57:23,185 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 03:57:23,185 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-23 03:57:23,190 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/data/87c2b7847/ecb60a25bd334ec180e722c09d8b7e87/FLAG42f438b12 [2018-11-23 03:57:23,201 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/data/87c2b7847/ecb60a25bd334ec180e722c09d8b7e87 [2018-11-23 03:57:23,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 03:57:23,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 03:57:23,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 03:57:23,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 03:57:23,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 03:57:23,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb4fcbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23, skipping insertion in model container [2018-11-23 03:57:23,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 03:57:23,227 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 03:57:23,333 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:57:23,335 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 03:57:23,352 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:57:23,363 INFO L195 MainTranslator]: Completed translation [2018-11-23 03:57:23,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23 WrapperNode [2018-11-23 03:57:23,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 03:57:23,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 03:57:23,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 03:57:23,364 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 03:57:23,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 03:57:23,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 03:57:23,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 03:57:23,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 03:57:23,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... [2018-11-23 03:57:23,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 03:57:23,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 03:57:23,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 03:57:23,442 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 03:57:23,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/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 03:57:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 03:57:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 03:57:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 03:57:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 03:57:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 03:57:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 03:57:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 03:57:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 03:57:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 03:57:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 03:57:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 03:57:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 03:57:23,682 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 03:57:23,682 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-11-23 03:57:23,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:57:23 BoogieIcfgContainer [2018-11-23 03:57:23,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 03:57:23,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 03:57:23,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 03:57:23,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 03:57:23,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:57:23" (1/3) ... [2018-11-23 03:57:23,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:57:23, skipping insertion in model container [2018-11-23 03:57:23,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:57:23" (2/3) ... [2018-11-23 03:57:23,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d2e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:57:23, skipping insertion in model container [2018-11-23 03:57:23,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:57:23" (3/3) ... [2018-11-23 03:57:23,689 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u_true-unreach-call.i [2018-11-23 03:57:23,697 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 03:57:23,703 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 03:57:23,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 03:57:23,743 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 03:57:23,744 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 03:57:23,744 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 03:57:23,744 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 03:57:23,744 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 03:57:23,745 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 03:57:23,745 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 03:57:23,745 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 03:57:23,745 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 03:57:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-23 03:57:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 03:57:23,765 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:23,766 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 03:57:23,767 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:23,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1773460249, now seen corresponding path program 1 times [2018-11-23 03:57:23,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:23,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:23,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:23,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:23,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:23,842 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:23,842 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:23,842 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/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 [2018-11-23 03:57:23,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:23,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:23,893 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 03:57:23,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:23,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 03:57:23,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 03:57:23,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 03:57:23,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 03:57:23,930 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-23 03:57:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:23,948 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2018-11-23 03:57:23,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 03:57:23,949 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-23 03:57:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:23,956 INFO L225 Difference]: With dead ends: 66 [2018-11-23 03:57:23,956 INFO L226 Difference]: Without dead ends: 31 [2018-11-23 03:57:23,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 03:57:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-23 03:57:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-23 03:57:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-23 03:57:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-11-23 03:57:23,980 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2018-11-23 03:57:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:23,981 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2018-11-23 03:57:23,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 03:57:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-11-23 03:57:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 03:57:23,982 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:23,982 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 03:57:23,982 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:23,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1763514787, now seen corresponding path program 1 times [2018-11-23 03:57:23,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:23,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:23,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:23,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:23,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:23,990 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:23,990 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:23,990 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/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 [2018-11-23 03:57:24,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:24,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,059 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 03:57:24,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:24,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 03:57:24,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 03:57:24,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 03:57:24,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 03:57:24,076 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2018-11-23 03:57:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:24,135 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2018-11-23 03:57:24,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 03:57:24,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-23 03:57:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:24,136 INFO L225 Difference]: With dead ends: 56 [2018-11-23 03:57:24,136 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 03:57:24,137 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 03:57:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 03:57:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-23 03:57:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 03:57:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-11-23 03:57:24,141 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2018-11-23 03:57:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:24,141 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-23 03:57:24,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 03:57:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2018-11-23 03:57:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 03:57:24,142 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:24,142 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:24,142 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:24,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2133227694, now seen corresponding path program 1 times [2018-11-23 03:57:24,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:24,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,147 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:24,147 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:24,148 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/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 [2018-11-23 03:57:24,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:24,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 03:57:24,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:24,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 03:57:24,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 03:57:24,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 03:57:24,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,243 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2018-11-23 03:57:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:24,303 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2018-11-23 03:57:24,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 03:57:24,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-23 03:57:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:24,305 INFO L225 Difference]: With dead ends: 72 [2018-11-23 03:57:24,305 INFO L226 Difference]: Without dead ends: 47 [2018-11-23 03:57:24,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-23 03:57:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-11-23 03:57:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 03:57:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-11-23 03:57:24,314 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2018-11-23 03:57:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:24,314 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-23 03:57:24,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 03:57:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2018-11-23 03:57:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 03:57:24,315 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:24,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:24,315 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:24,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1108398309, now seen corresponding path program 1 times [2018-11-23 03:57:24,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:24,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:24,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,320 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:24,320 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:24,321 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 03:57:24,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:24,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 03:57:24,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:24,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 03:57:24,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 03:57:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 03:57:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,405 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 4 states. [2018-11-23 03:57:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:24,456 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2018-11-23 03:57:24,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 03:57:24,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-23 03:57:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:24,457 INFO L225 Difference]: With dead ends: 72 [2018-11-23 03:57:24,458 INFO L226 Difference]: Without dead ends: 45 [2018-11-23 03:57:24,458 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-23 03:57:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2018-11-23 03:57:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-23 03:57:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-11-23 03:57:24,463 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 23 [2018-11-23 03:57:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:24,463 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-23 03:57:24,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 03:57:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-11-23 03:57:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 03:57:24,464 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:24,464 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:24,464 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:24,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1602833213, now seen corresponding path program 1 times [2018-11-23 03:57:24,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:24,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:24,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,469 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:24,469 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:24,469 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 03:57:24,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:24,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 03:57:24,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:57:24,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-23 03:57:24,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 03:57:24,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 03:57:24,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:57:24,570 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 5 states. [2018-11-23 03:57:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:24,677 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2018-11-23 03:57:24,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 03:57:24,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-23 03:57:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:24,679 INFO L225 Difference]: With dead ends: 83 [2018-11-23 03:57:24,679 INFO L226 Difference]: Without dead ends: 54 [2018-11-23 03:57:24,680 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:57:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-23 03:57:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-11-23 03:57:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 03:57:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-23 03:57:24,686 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2018-11-23 03:57:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:24,687 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-23 03:57:24,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 03:57:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-23 03:57:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 03:57:24,688 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:24,688 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:24,688 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:24,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash 249553947, now seen corresponding path program 2 times [2018-11-23 03:57:24,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:24,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:24,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,694 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:24,694 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:24,694 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 03:57:24,707 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 03:57:24,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 03:57:24,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:57:24,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 03:57:24,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:24,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 03:57:24,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 03:57:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 03:57:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,761 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-23 03:57:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:24,809 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2018-11-23 03:57:24,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 03:57:24,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 03:57:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:24,810 INFO L225 Difference]: With dead ends: 74 [2018-11-23 03:57:24,810 INFO L226 Difference]: Without dead ends: 60 [2018-11-23 03:57:24,810 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:57:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-23 03:57:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-11-23 03:57:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 03:57:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-23 03:57:24,817 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 25 [2018-11-23 03:57:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:24,818 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-23 03:57:24,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 03:57:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-23 03:57:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-23 03:57:24,819 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:24,819 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:24,819 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:24,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1698801625, now seen corresponding path program 1 times [2018-11-23 03:57:24,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:24,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:24,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 03:57:24,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:24,825 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:24,825 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:24,825 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 03:57:24,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:57:24,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 03:57:24,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 03:57:24,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-23 03:57:24,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 03:57:24,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 03:57:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 03:57:24,919 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2018-11-23 03:57:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:25,001 INFO L93 Difference]: Finished difference Result 94 states and 121 transitions. [2018-11-23 03:57:25,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 03:57:25,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-11-23 03:57:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:25,002 INFO L225 Difference]: With dead ends: 94 [2018-11-23 03:57:25,003 INFO L226 Difference]: Without dead ends: 62 [2018-11-23 03:57:25,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 03:57:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-23 03:57:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2018-11-23 03:57:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 03:57:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-23 03:57:25,009 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2018-11-23 03:57:25,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:25,009 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-23 03:57:25,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 03:57:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-23 03:57:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 03:57:25,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:57:25,010 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:57:25,010 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:57:25,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:57:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash -602786922, now seen corresponding path program 2 times [2018-11-23 03:57:25,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:57:25,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:57:25,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:25,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:57:25,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:57:25,016 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 03:57:25,016 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 03:57:25,016 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 03:57:25,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 03:57:25,045 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 03:57:25,045 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 03:57:25,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 03:57:25,075 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2018-11-23 03:57:25,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 3 [2018-11-23 03:57:25,078 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 03:57:25,079 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 03:57:25,080 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 03:57:25,080 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:51, output treesize:3 [2018-11-23 03:57:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-23 03:57:25,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:57:25,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 03:57:25,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 03:57:25,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 03:57:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:57:25,124 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 5 states. [2018-11-23 03:57:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:57:25,146 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2018-11-23 03:57:25,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 03:57:25,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-23 03:57:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:57:25,147 INFO L225 Difference]: With dead ends: 41 [2018-11-23 03:57:25,147 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 03:57:25,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 03:57:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 03:57:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 03:57:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 03:57:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 03:57:25,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-11-23 03:57:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:57:25,148 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 03:57:25,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 03:57:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 03:57:25,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 03:57:25,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 03:57:25,264 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 03:57:25,265 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 03:57:25,265 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:57:25,265 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:57:25,265 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 03:57:25,265 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 03:57:25,265 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 03:57:25,265 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 81) no Hoare annotation was computed. [2018-11-23 03:57:25,265 INFO L444 ceAbstractionStarter]: At program point L52-2(lines 52 55) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,265 INFO L448 ceAbstractionStarter]: For program point L52-3(lines 52 55) no Hoare annotation was computed. [2018-11-23 03:57:25,266 INFO L444 ceAbstractionStarter]: At program point L70-2(lines 70 77) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,266 INFO L448 ceAbstractionStarter]: For program point L70-3(lines 70 77) no Hoare annotation was computed. [2018-11-23 03:57:25,266 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 36) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,266 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 29 36) no Hoare annotation was computed. [2018-11-23 03:57:25,266 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 81) no Hoare annotation was computed. [2018-11-23 03:57:25,266 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 81) the Hoare annotation is: true [2018-11-23 03:57:25,266 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 59) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,266 INFO L448 ceAbstractionStarter]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2018-11-23 03:57:25,266 INFO L444 ceAbstractionStarter]: At program point L72-2(lines 72 75) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,266 INFO L448 ceAbstractionStarter]: For program point L72-3(lines 72 75) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L444 ceAbstractionStarter]: At program point L31-2(lines 31 34) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L31-3(lines 31 34) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L444 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (and (<= 500 main_~p~0) (= |main_#t~mem4| |main_#t~mem3|)) [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L444 ceAbstractionStarter]: At program point L50-2(lines 50 57) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L50-3(lines 50 57) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L444 ceAbstractionStarter]: At program point L67-2(lines 67 79) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L67-3(lines 67 79) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 26 38) the Hoare annotation is: (<= 500 main_~p~0) [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L26-3(lines 26 38) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 03:57:25,267 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 03:57:25,268 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 03:57:25,268 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 03:57:25,268 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 03:57:25,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:57:25 BoogieIcfgContainer [2018-11-23 03:57:25,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 03:57:25,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 03:57:25,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 03:57:25,279 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 03:57:25,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:57:23" (3/4) ... [2018-11-23 03:57:25,282 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 03:57:25,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 03:57:25,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 03:57:25,289 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 03:57:25,292 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-23 03:57:25,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 03:57:25,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 03:57:25,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 03:57:25,336 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e5e5bea5-eaed-4c41-9aa8-592f6bdc8c7b/bin-2019/uautomizer/witness.graphml [2018-11-23 03:57:25,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 03:57:25,337 INFO L168 Benchmark]: Toolchain (without parser) took 2133.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.3 MB in the beginning and 905.0 MB in the end (delta: 55.3 MB). Peak memory consumption was 191.6 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,338 INFO L168 Benchmark]: CDTParser took 0.14 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 03:57:25,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.76 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 03:57:25,339 INFO L168 Benchmark]: Boogie Preprocessor took 59.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,339 INFO L168 Benchmark]: RCFGBuilder took 240.88 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,339 INFO L168 Benchmark]: TraceAbstraction took 1594.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.7 MB in the end (delta: 206.4 MB). Peak memory consumption was 206.4 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,340 INFO L168 Benchmark]: Witness Printer took 58.64 ms. Allocated memory is still 1.2 GB. Free memory was 907.7 MB in the beginning and 905.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:57:25,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 159.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.76 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. * Boogie Preprocessor took 59.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 240.88 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1594.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.7 MB in the end (delta: 206.4 MB). Peak memory consumption was 206.4 MB. Max. memory is 11.5 GB. * Witness Printer took 58.64 ms. Allocated memory is still 1.2 GB. Free memory was 907.7 MB in the beginning and 905.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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: 29]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 500 <= p - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 500 <= p - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 234 SDtfs, 175 SDslu, 298 SDs, 0 SdLazy, 217 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, 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, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 22 PreInvPairs, 42 NumberOfFragments, 39 HoareAnnotationTreeSize, 22 FomulaSimplifications, 4772 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 194 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 7010 SizeOfPredicates, 22 NumberOfNonLiveVariables, 778 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 33/37 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...