./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:59:35,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:59:35,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:59:35,808 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:59:35,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:59:35,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:59:35,813 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:59:35,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:59:35,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:59:35,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:59:35,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:59:35,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:59:35,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:59:35,824 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:59:35,824 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:59:35,825 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:59:35,826 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:59:35,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:59:35,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:59:35,830 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:59:35,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:59:35,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:59:35,834 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:59:35,834 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:59:35,834 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:59:35,835 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:59:35,836 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:59:35,836 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:59:35,837 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:59:35,838 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:59:35,838 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:59:35,839 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:59:35,839 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:59:35,839 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:59:35,840 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:59:35,840 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:59:35,841 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 23:59:35,854 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:59:35,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:59:35,857 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:59:35,858 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:59:35,858 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:59:35,858 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:59:35,858 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 23:59:35,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:59:35,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:59:35,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:59:35,859 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:59:35,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:59:35,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:59:35,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:59:35,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:59:35,862 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:59:35,862 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:59:35,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:59:35,863 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:59:35,863 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:59:35,863 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:59:35,863 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 23:59:35,863 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:59:35,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:59:35,863 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_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2018-10-26 23:59:35,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:59:35,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:59:35,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:59:35,904 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:59:35,904 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:59:35,905 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-10-26 23:59:35,953 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/data/91badbf25/ea0e6ee13c974271aebec12a9a396cf7/FLAG8d42455ba [2018-10-26 23:59:36,337 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:59:36,337 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-10-26 23:59:36,342 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/data/91badbf25/ea0e6ee13c974271aebec12a9a396cf7/FLAG8d42455ba [2018-10-26 23:59:36,354 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/data/91badbf25/ea0e6ee13c974271aebec12a9a396cf7 [2018-10-26 23:59:36,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:59:36,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:59:36,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:59:36,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:59:36,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:59:36,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696fb3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36, skipping insertion in model container [2018-10-26 23:59:36,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:59:36,389 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:59:36,507 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:59:36,514 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:59:36,532 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:59:36,542 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:59:36,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36 WrapperNode [2018-10-26 23:59:36,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:59:36,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:59:36,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:59:36,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:59:36,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... [2018-10-26 23:59:36,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:59:36,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:59:36,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:59:36,578 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:59:36,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 [2018-10-26 23:59:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:59:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:59:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-10-26 23:59:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-10-26 23:59:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:59:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 23:59:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 23:59:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:59:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:59:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 23:59:37,781 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:59:37,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:59:37 BoogieIcfgContainer [2018-10-26 23:59:37,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:59:37,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:59:37,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:59:37,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:59:37,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:59:36" (1/3) ... [2018-10-26 23:59:37,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580058dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:59:37, skipping insertion in model container [2018-10-26 23:59:37,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:59:36" (2/3) ... [2018-10-26 23:59:37,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580058dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:59:37, skipping insertion in model container [2018-10-26 23:59:37,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:59:37" (3/3) ... [2018-10-26 23:59:37,789 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum05_false-unreach-call_true-termination.i [2018-10-26 23:59:37,797 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:59:37,806 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:59:37,821 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:59:37,848 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:59:37,848 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:59:37,849 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:59:37,849 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:59:37,849 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:59:37,849 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:59:37,849 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:59:37,849 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:59:37,850 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:59:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-10-26 23:59:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 23:59:37,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:37,873 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2018-10-26 23:59:37,875 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:37,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:37,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1791253179, now seen corresponding path program 1 times [2018-10-26 23:59:37,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:37,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:37,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:37,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:37,990 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-10-26 23:59:37,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:59:37,991 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 23:59:38,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:59:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 23:59:38,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:59:38,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:59:38,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:59:38,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:59:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:59:38,127 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-10-26 23:59:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:38,155 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2018-10-26 23:59:38,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:59:38,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2018-10-26 23:59:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:38,166 INFO L225 Difference]: With dead ends: 101 [2018-10-26 23:59:38,166 INFO L226 Difference]: Without dead ends: 50 [2018-10-26 23:59:38,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:59:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-26 23:59:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-26 23:59:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-26 23:59:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-10-26 23:59:38,219 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 45 [2018-10-26 23:59:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:38,219 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-10-26 23:59:38,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:59:38,219 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-10-26 23:59:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 23:59:38,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:38,222 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:38,223 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:38,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1678192877, now seen corresponding path program 1 times [2018-10-26 23:59:38,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:38,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:38,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,245 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:38,245 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:38,245 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 [2018-10-26 23:59:38,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 23:59:38,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:59:38,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:59:38,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:59:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:59:38,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:59:38,404 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 3 states. [2018-10-26 23:59:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:38,504 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2018-10-26 23:59:38,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:59:38,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-26 23:59:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:38,510 INFO L225 Difference]: With dead ends: 92 [2018-10-26 23:59:38,510 INFO L226 Difference]: Without dead ends: 55 [2018-10-26 23:59:38,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:59:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-26 23:59:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2018-10-26 23:59:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-26 23:59:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-10-26 23:59:38,521 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 50 [2018-10-26 23:59:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:38,521 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-10-26 23:59:38,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:59:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-10-26 23:59:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-26 23:59:38,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:38,523 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:38,523 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:38,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1102645303, now seen corresponding path program 1 times [2018-10-26 23:59:38,524 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:38,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:38,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,567 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-10-26 23:59:38,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:59:38,568 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 23:59:38,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:59:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 23:59:38,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:59:38,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:59:38,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:59:38,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:59:38,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:59:38,726 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 3 states. [2018-10-26 23:59:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:38,744 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2018-10-26 23:59:38,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:59:38,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-26 23:59:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:38,748 INFO L225 Difference]: With dead ends: 94 [2018-10-26 23:59:38,748 INFO L226 Difference]: Without dead ends: 61 [2018-10-26 23:59:38,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:59:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-26 23:59:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2018-10-26 23:59:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 23:59:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2018-10-26 23:59:38,758 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 55 [2018-10-26 23:59:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:38,758 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2018-10-26 23:59:38,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:59:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2018-10-26 23:59:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-26 23:59:38,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:38,760 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:38,760 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:38,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:38,760 INFO L82 PathProgramCache]: Analyzing trace with hash 192802346, now seen corresponding path program 1 times [2018-10-26 23:59:38,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:38,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:38,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 23:59:38,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:59:38,824 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 [2018-10-26 23:59:38,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:38,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 23:59:38,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:38,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 23:59:38,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:59:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:59:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:38,931 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 4 states. [2018-10-26 23:59:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:38,978 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2018-10-26 23:59:38,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:59:38,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-26 23:59:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:38,980 INFO L225 Difference]: With dead ends: 99 [2018-10-26 23:59:38,980 INFO L226 Difference]: Without dead ends: 61 [2018-10-26 23:59:38,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-26 23:59:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-10-26 23:59:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 23:59:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-10-26 23:59:38,988 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 55 [2018-10-26 23:59:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:38,988 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-10-26 23:59:38,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:59:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-10-26 23:59:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-26 23:59:38,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:38,991 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:38,991 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:38,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:38,992 INFO L82 PathProgramCache]: Analyzing trace with hash -531920157, now seen corresponding path program 1 times [2018-10-26 23:59:38,992 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:38,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:38,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:38,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:38,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-26 23:59:39,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:59:39,062 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:59:39,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:39,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-26 23:59:39,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:39,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 23:59:39,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:59:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:59:39,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:39,213 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 5 states. [2018-10-26 23:59:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:39,404 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2018-10-26 23:59:39,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:59:39,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2018-10-26 23:59:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:39,406 INFO L225 Difference]: With dead ends: 113 [2018-10-26 23:59:39,406 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 23:59:39,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 23:59:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2018-10-26 23:59:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 23:59:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-10-26 23:59:39,413 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 67 [2018-10-26 23:59:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:39,413 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-10-26 23:59:39,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:59:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-10-26 23:59:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-26 23:59:39,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:39,415 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:39,415 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:39,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:39,415 INFO L82 PathProgramCache]: Analyzing trace with hash -847376624, now seen corresponding path program 1 times [2018-10-26 23:59:39,415 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:39,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:39,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:39,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:39,427 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:39,427 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:39,427 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 [2018-10-26 23:59:39,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:39,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 23:59:39,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:39,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-26 23:59:39,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:59:39,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:59:39,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:39,663 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 4 states. [2018-10-26 23:59:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:39,831 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2018-10-26 23:59:39,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:59:39,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-10-26 23:59:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:39,833 INFO L225 Difference]: With dead ends: 113 [2018-10-26 23:59:39,833 INFO L226 Difference]: Without dead ends: 68 [2018-10-26 23:59:39,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-26 23:59:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-10-26 23:59:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-26 23:59:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-10-26 23:59:39,842 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 91 [2018-10-26 23:59:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:39,842 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-10-26 23:59:39,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:59:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-10-26 23:59:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 23:59:39,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:39,844 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:39,844 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:39,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:39,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1747890100, now seen corresponding path program 2 times [2018-10-26 23:59:39,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:39,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:39,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:39,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:39,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:39,859 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:39,860 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:39,860 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:39,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:39,914 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:59:39,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:39,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 23:59:40,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:40,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:59:40,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:59:40,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:59:40,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:40,048 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2018-10-26 23:59:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:40,172 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2018-10-26 23:59:40,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:59:40,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-26 23:59:40,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:40,181 INFO L225 Difference]: With dead ends: 118 [2018-10-26 23:59:40,181 INFO L226 Difference]: Without dead ends: 73 [2018-10-26 23:59:40,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-26 23:59:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-10-26 23:59:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-26 23:59:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-10-26 23:59:40,197 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 96 [2018-10-26 23:59:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:40,197 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-10-26 23:59:40,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:59:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-10-26 23:59:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 23:59:40,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:40,199 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:40,199 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:40,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:40,199 INFO L82 PathProgramCache]: Analyzing trace with hash 448583056, now seen corresponding path program 3 times [2018-10-26 23:59:40,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:40,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:40,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:40,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,229 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:40,235 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:40,236 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/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 [2018-10-26 23:59:40,250 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 23:59:40,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-26 23:59:40,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:40,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-26 23:59:40,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:40,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-26 23:59:40,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:59:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:59:40,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:40,428 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2018-10-26 23:59:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:40,491 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2018-10-26 23:59:40,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:59:40,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-26 23:59:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:40,493 INFO L225 Difference]: With dead ends: 102 [2018-10-26 23:59:40,494 INFO L226 Difference]: Without dead ends: 80 [2018-10-26 23:59:40,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:59:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-26 23:59:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2018-10-26 23:59:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-26 23:59:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-10-26 23:59:40,508 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 101 [2018-10-26 23:59:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:40,508 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-10-26 23:59:40,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:59:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-10-26 23:59:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-26 23:59:40,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:40,509 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:40,510 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:40,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1619503784, now seen corresponding path program 4 times [2018-10-26 23:59:40,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:40,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:40,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:40,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,521 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:40,522 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:40,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:40,534 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:40,569 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:59:40,569 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:40,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-26 23:59:40,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:40,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:59:40,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:59:40,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:59:40,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:40,675 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2018-10-26 23:59:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:40,724 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2018-10-26 23:59:40,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:59:40,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2018-10-26 23:59:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:40,727 INFO L225 Difference]: With dead ends: 135 [2018-10-26 23:59:40,728 INFO L226 Difference]: Without dead ends: 84 [2018-10-26 23:59:40,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-26 23:59:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-10-26 23:59:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-26 23:59:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-10-26 23:59:40,733 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 107 [2018-10-26 23:59:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:40,734 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-10-26 23:59:40,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:59:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-10-26 23:59:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 23:59:40,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:40,735 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:40,735 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:40,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1925874508, now seen corresponding path program 5 times [2018-10-26 23:59:40,736 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:40,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:40,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:40,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:40,751 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:40,752 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:40,752 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:40,779 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-26 23:59:40,803 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:59:40,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:40,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-26 23:59:41,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:41,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:59:41,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:59:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:59:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:41,015 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 5 states. [2018-10-26 23:59:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:41,041 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2018-10-26 23:59:41,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:59:41,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-26 23:59:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:41,050 INFO L225 Difference]: With dead ends: 134 [2018-10-26 23:59:41,050 INFO L226 Difference]: Without dead ends: 87 [2018-10-26 23:59:41,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-26 23:59:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-26 23:59:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-26 23:59:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2018-10-26 23:59:41,068 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 112 [2018-10-26 23:59:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:41,068 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2018-10-26 23:59:41,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:59:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2018-10-26 23:59:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-26 23:59:41,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:41,083 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:41,083 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:41,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash 914440898, now seen corresponding path program 6 times [2018-10-26 23:59:41,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:41,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:41,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:41,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,114 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:41,114 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:41,114 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:41,125 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-26 23:59:41,249 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-26 23:59:41,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:41,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 122 proven. 20 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-10-26 23:59:41,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:41,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:59:41,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:59:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:59:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:41,315 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 6 states. [2018-10-26 23:59:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:41,371 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2018-10-26 23:59:41,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:59:41,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-26 23:59:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:41,376 INFO L225 Difference]: With dead ends: 148 [2018-10-26 23:59:41,377 INFO L226 Difference]: Without dead ends: 95 [2018-10-26 23:59:41,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-26 23:59:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-26 23:59:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-26 23:59:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2018-10-26 23:59:41,385 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 130 [2018-10-26 23:59:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:41,386 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2018-10-26 23:59:41,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:59:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2018-10-26 23:59:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-26 23:59:41,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:41,388 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:41,388 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:41,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1863077556, now seen corresponding path program 7 times [2018-10-26 23:59:41,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:41,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:41,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:41,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,405 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:41,405 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:41,405 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:41,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:59:41,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-10-26 23:59:41,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:41,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-26 23:59:41,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:59:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:59:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:59:41,695 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 7 states. [2018-10-26 23:59:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:41,809 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2018-10-26 23:59:41,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:59:41,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2018-10-26 23:59:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:41,814 INFO L225 Difference]: With dead ends: 165 [2018-10-26 23:59:41,815 INFO L226 Difference]: Without dead ends: 100 [2018-10-26 23:59:41,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:59:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-26 23:59:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-26 23:59:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-26 23:59:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2018-10-26 23:59:41,822 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 154 [2018-10-26 23:59:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:41,822 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2018-10-26 23:59:41,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:59:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2018-10-26 23:59:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-26 23:59:41,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:41,824 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:59:41,824 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:41,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash -689034864, now seen corresponding path program 8 times [2018-10-26 23:59:41,824 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:41,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:41,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:59:41,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:41,842 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:41,842 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:41,843 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:41,852 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:41,896 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 23:59:41,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:41,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 268 proven. 10 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-26 23:59:41,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:41,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-26 23:59:41,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:59:41,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:59:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:41,980 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 5 states. [2018-10-26 23:59:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:42,010 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2018-10-26 23:59:42,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:59:42,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-10-26 23:59:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:42,012 INFO L225 Difference]: With dead ends: 146 [2018-10-26 23:59:42,012 INFO L226 Difference]: Without dead ends: 110 [2018-10-26 23:59:42,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:59:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-26 23:59:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2018-10-26 23:59:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-26 23:59:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2018-10-26 23:59:42,019 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 159 [2018-10-26 23:59:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:42,020 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2018-10-26 23:59:42,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:59:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2018-10-26 23:59:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-26 23:59:42,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:42,022 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2018-10-26 23:59:42,022 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:42,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:42,022 INFO L82 PathProgramCache]: Analyzing trace with hash -313076056, now seen corresponding path program 9 times [2018-10-26 23:59:42,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:42,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:42,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:42,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:42,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:42,040 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:42,040 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:42,040 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:42,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:42,141 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-26 23:59:42,141 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:59:42,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:59:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 268 proven. 24 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-26 23:59:42,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:59:42,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-26 23:59:42,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:59:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:59:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:42,302 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand 6 states. [2018-10-26 23:59:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:59:42,417 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2018-10-26 23:59:42,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:59:42,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-26 23:59:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:59:42,419 INFO L225 Difference]: With dead ends: 148 [2018-10-26 23:59:42,420 INFO L226 Difference]: Without dead ends: 112 [2018-10-26 23:59:42,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:59:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-26 23:59:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-26 23:59:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-26 23:59:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-10-26 23:59:42,424 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 165 [2018-10-26 23:59:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:59:42,424 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-10-26 23:59:42,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:59:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-10-26 23:59:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-26 23:59:42,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:59:42,425 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1] [2018-10-26 23:59:42,425 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:59:42,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:59:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash 559894976, now seen corresponding path program 10 times [2018-10-26 23:59:42,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 23:59:42,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 23:59:42,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:42,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:59:42,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:59:42,442 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:59:42,443 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:59:42,443 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:59:42,459 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:59:42,531 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 23:59:42,532 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-10-26 23:59:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:59:42,653 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 23:59:42,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:59:42 BoogieIcfgContainer [2018-10-26 23:59:42,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:59:42,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:59:42,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:59:42,714 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:59:42,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:59:37" (3/4) ... [2018-10-26 23:59:42,716 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 23:59:42,832 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0a6c1fa2-c21e-4fb9-8db5-9d7b63af1866/bin-2019/uautomizer/witness.graphml [2018-10-26 23:59:42,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:59:42,833 INFO L168 Benchmark]: Toolchain (without parser) took 6475.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 959.7 MB in the beginning and 947.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 241.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,834 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:59:42,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,835 INFO L168 Benchmark]: Boogie Preprocessor took 33.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,835 INFO L168 Benchmark]: RCFGBuilder took 1204.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,836 INFO L168 Benchmark]: TraceAbstraction took 4931.15 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 952.3 MB in the end (delta: 190.7 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,836 INFO L168 Benchmark]: Witness Printer took 117.84 ms. Allocated memory is still 1.3 GB. Free memory was 952.3 MB in the beginning and 947.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:59:42,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1204.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4931.15 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 952.3 MB in the end (delta: 190.7 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. * Witness Printer took 117.84 ms. Allocated memory is still 1.3 GB. Free memory was 952.3 MB in the beginning and 947.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] FCALL int x[5]; VAL [x={11:0}] [L32] CALL init_nondet(x) VAL [x={11:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={11:0}, x={11:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2661, i=0, x={11:0}, x={11:0}] [L6] i++ VAL [i=1, x={11:0}, x={11:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=3, i=1, x={11:0}, x={11:0}] [L6] i++ VAL [i=2, x={11:0}, x={11:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2, i=2, x={11:0}, x={11:0}] [L6] i++ VAL [i=3, x={11:0}, x={11:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, i=3, x={11:0}, x={11:0}] [L6] i++ VAL [i=4, x={11:0}, x={11:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, i=4, x={11:0}, x={11:0}] [L6] i++ VAL [i=5, x={11:0}, x={11:0}] [L6] COND FALSE, RET !(i < 5) VAL [i=5, x={11:0}, x={11:0}] [L32] init_nondet(x) VAL [x={11:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={11:0}] [L38] CALL, EXPR rangesum(x) VAL [x={11:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}, x[i]=-1] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-1, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}, x[i]=0] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-1, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=0, cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L38] EXPR rangesum(x) VAL [rangesum(x)=0, x={11:0}] [L38] ret = rangesum(x) [L40] EXPR, FCALL x[0] VAL [ret=0, x={11:0}, x[0]=2661] [L40] temp=x[0] [L40] EXPR, FCALL x[1] VAL [ret=0, temp=2661, x={11:0}, x[1]=3] [L40] FCALL x[0] = x[1] VAL [ret=0, temp=2661, x={11:0}, x[1]=3] [L40] FCALL x[1] = temp VAL [ret=0, temp=2661, x={11:0}] [L41] CALL, EXPR rangesum(x) VAL [x={11:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}, x[i]=-1] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-1, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=-1, x={11:0}, x={11:0}, x[i]=0] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-1, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=0, cnt=2, i=5, ret=-1, x={11:0}, x={11:0}] [L41] EXPR rangesum(x) VAL [rangesum(x)=0, ret=0, temp=2661, x={11:0}] [L41] ret2 = rangesum(x) [L42] EXPR, FCALL x[0] VAL [ret=0, ret2=0, temp=2661, x={11:0}, x[0]=3] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=0, ret2=0, temp=3, x={11:0}] [L43] COND TRUE i<5 -1 VAL [i=0, ret=0, ret2=0, temp=3, x={11:0}] [L44] EXPR, FCALL x[i+1] VAL [i=0, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=2661] [L44] FCALL x[i] = x[i+1] VAL [i=0, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=2661] [L43] i++ VAL [i=1, ret=0, ret2=0, temp=3, x={11:0}] [L43] COND TRUE i<5 -1 VAL [i=1, ret=0, ret2=0, temp=3, x={11:0}] [L44] EXPR, FCALL x[i+1] VAL [i=1, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=2] [L44] FCALL x[i] = x[i+1] VAL [i=1, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=2] [L43] i++ VAL [i=2, ret=0, ret2=0, temp=3, x={11:0}] [L43] COND TRUE i<5 -1 VAL [i=2, ret=0, ret2=0, temp=3, x={11:0}] [L44] EXPR, FCALL x[i+1] VAL [i=2, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=-1] [L44] FCALL x[i] = x[i+1] VAL [i=2, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=-1] [L43] i++ VAL [i=3, ret=0, ret2=0, temp=3, x={11:0}] [L43] COND TRUE i<5 -1 VAL [i=3, ret=0, ret2=0, temp=3, x={11:0}] [L44] EXPR, FCALL x[i+1] VAL [i=3, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=0] [L44] FCALL x[i] = x[i+1] VAL [i=3, ret=0, ret2=0, temp=3, x={11:0}, x[i+1]=0] [L43] i++ VAL [i=4, ret=0, ret2=0, temp=3, x={11:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=0, ret2=0, temp=3, x={11:0}] [L46] FCALL x[5 -1] = temp VAL [i=4, ret=0, ret2=0, temp=3, x={11:0}] [L47] CALL, EXPR rangesum(x) VAL [x={11:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={11:0}, x={11:0}, x[i]=0] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=0, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=1, i=4, ret=0, x={11:0}, x={11:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=0, x={11:0}, x={11:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=0, x={11:0}, x={11:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=0, x={11:0}, x={11:0}, x[i]=3] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=3, x={11:0}, x={11:0}] [L17] i++ VAL [cnt=2, i=5, ret=3, x={11:0}, x={11:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=3, x={11:0}, x={11:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=1, cnt=2, i=5, ret=3, x={11:0}, x={11:0}] [L47] EXPR rangesum(x) VAL [i=4, rangesum(x)=1, ret=0, ret2=0, temp=3, x={11:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=0, ret2=0, ret5=1, temp=3, x={11:0}] [L50] __VERIFIER_error() VAL [i=4, ret=0, ret2=0, ret5=1, temp=3, x={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. UNSAFE Result, 4.8s OverallTime, 15 OverallIterations, 18 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 740 SDtfs, 129 SDslu, 1555 SDs, 0 SdLazy, 219 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1380 GetRequests, 1343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=14, 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: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 37 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1780 NumberOfCodeBlocks, 1585 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1493 ConstructedInterpolants, 0 QuantifiedInterpolants, 199103 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2833 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 2925/3080 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...