./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/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 af68da58954d6230e3860792840330ae6de845ab .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-0cd3be1 [2018-11-28 11:17:35,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:17:35,871 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:17:35,879 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:17:35,880 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:17:35,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:17:35,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:17:35,883 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:17:35,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:17:35,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:17:35,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:17:35,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:17:35,887 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:17:35,888 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:17:35,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:17:35,889 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:17:35,891 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:17:35,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:17:35,894 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:17:35,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:17:35,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:17:35,897 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:17:35,899 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:17:35,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:17:35,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:17:35,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:17:35,901 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:17:35,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:17:35,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:17:35,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:17:35,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:17:35,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:17:35,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:17:35,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:17:35,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:17:35,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:17:35,907 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:17:35,919 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:17:35,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:17:35,920 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:17:35,920 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:17:35,920 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:17:35,921 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:17:35,921 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:17:35,921 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:17:35,921 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:17:35,921 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:17:35,921 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:17:35,922 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:17:35,923 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:17:35,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:17:35,923 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:17:35,923 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:17:35,924 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:17:35,924 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:17:35,924 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:17:35,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:17:35,924 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:17:35,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:17:35,925 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:17:35,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:17:35,925 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:17:35,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:17:35,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:17:35,925 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:17:35,926 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:17:35,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:17:35,926 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_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/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 -> af68da58954d6230e3860792840330ae6de845ab [2018-11-28 11:17:35,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:17:35,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:17:35,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:17:35,967 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:17:35,967 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:17:35,968 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-11-28 11:17:36,019 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/data/112273fa6/cd693f64afdf40ed9b59760f5528ab93/FLAG87c6ecb57 [2018-11-28 11:17:36,366 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:17:36,367 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/sv-benchmarks/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2018-11-28 11:17:36,372 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/data/112273fa6/cd693f64afdf40ed9b59760f5528ab93/FLAG87c6ecb57 [2018-11-28 11:17:36,789 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/data/112273fa6/cd693f64afdf40ed9b59760f5528ab93 [2018-11-28 11:17:36,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:17:36,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:17:36,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:36,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:17:36,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:17:36,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:36,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351e0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36, skipping insertion in model container [2018-11-28 11:17:36,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:36,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:17:36,818 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:17:36,935 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:36,941 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:17:36,960 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:17:36,971 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:17:36,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36 WrapperNode [2018-11-28 11:17:36,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:17:36,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:36,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:17:36,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:17:36,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:36,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:36,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:17:36,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:17:36,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:17:36,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:17:37,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... [2018-11-28 11:17:37,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:17:37,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:17:37,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:17:37,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:17:37,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:17:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:17:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:17:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:17:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:17:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:17:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:17:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:17:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:17:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:17:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-11-28 11:17:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-11-28 11:17:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:17:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-11-28 11:17:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-11-28 11:17:37,297 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:17:37,297 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-28 11:17:37,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:37 BoogieIcfgContainer [2018-11-28 11:17:37,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:17:37,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:17:37,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:17:37,301 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:17:37,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:17:36" (1/3) ... [2018-11-28 11:17:37,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215b074c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:37, skipping insertion in model container [2018-11-28 11:17:37,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:36" (2/3) ... [2018-11-28 11:17:37,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215b074c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:17:37, skipping insertion in model container [2018-11-28 11:17:37,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:37" (3/3) ... [2018-11-28 11:17:37,304 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10_false-unreach-call_true-termination.i [2018-11-28 11:17:37,314 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:17:37,321 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:17:37,338 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:17:37,368 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:17:37,369 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:17:37,369 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:17:37,369 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:17:37,369 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:17:37,370 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:17:37,370 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:17:37,370 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:17:37,370 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:17:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-28 11:17:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 11:17:37,390 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:37,391 INFO L402 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] [2018-11-28 11:17:37,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:37,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:37,397 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2018-11-28 11:17:37,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:37,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:37,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:37,507 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-11-28 11:17:37,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:17:37,507 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:17:37,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:37,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 11:17:37,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:17:37,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:17:37,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 11:17:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 11:17:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:17:37,603 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-28 11:17:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:37,620 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-11-28 11:17:37,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:17:37,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-11-28 11:17:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:37,628 INFO L225 Difference]: With dead ends: 64 [2018-11-28 11:17:37,628 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 11:17:37,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:17:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 11:17:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-28 11:17:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 11:17:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-11-28 11:17:37,660 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2018-11-28 11:17:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:37,660 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-11-28 11:17:37,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 11:17:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-11-28 11:17:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 11:17:37,662 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:37,663 INFO L402 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] [2018-11-28 11:17:37,663 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:37,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:37,663 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2018-11-28 11:17:37,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:37,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:37,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,677 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:37,677 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:37,677 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:37,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:37,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 11:17:37,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:17:37,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:17:37,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:17:37,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:17:37,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:17:37,782 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2018-11-28 11:17:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:37,811 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-11-28 11:17:37,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:17:37,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-28 11:17:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:37,812 INFO L225 Difference]: With dead ends: 56 [2018-11-28 11:17:37,812 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 11:17:37,813 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:17:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 11:17:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-11-28 11:17:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 11:17:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-11-28 11:17:37,818 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2018-11-28 11:17:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:37,818 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-11-28 11:17:37,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:17:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-28 11:17:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 11:17:37,819 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:37,820 INFO L402 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] [2018-11-28 11:17:37,820 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:37,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2018-11-28 11:17:37,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:37,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:37,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,836 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:37,836 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:37,836 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:37,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:37,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 11:17:37,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:17:37,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:17:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:17:37,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:17:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:17:37,924 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2018-11-28 11:17:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:37,936 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-11-28 11:17:37,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:17:37,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-28 11:17:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:37,938 INFO L225 Difference]: With dead ends: 57 [2018-11-28 11:17:37,938 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 11:17:37,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:17:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 11:17:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-28 11:17:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:17:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-11-28 11:17:37,944 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 39 [2018-11-28 11:17:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:37,944 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-28 11:17:37,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:17:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-11-28 11:17:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 11:17:37,945 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:37,945 INFO L402 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] [2018-11-28 11:17:37,945 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:37,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash -22870507, now seen corresponding path program 1 times [2018-11-28 11:17:37,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:37,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:37,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:37,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 11:17:37,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:17:37,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:17:37,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:38,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 11:17:38,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-28 11:17:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:17:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:17:38,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,054 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-11-28 11:17:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,084 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-11-28 11:17:38,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:17:38,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-28 11:17:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,085 INFO L225 Difference]: With dead ends: 62 [2018-11-28 11:17:38,085 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 11:17:38,086 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 11:17:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-11-28 11:17:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 11:17:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-11-28 11:17:38,090 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 39 [2018-11-28 11:17:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,091 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-28 11:17:38,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:17:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-11-28 11:17:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-28 11:17:38,092 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,092 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 11:17:38,092 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,092 INFO L82 PathProgramCache]: Analyzing trace with hash 496221539, now seen corresponding path program 1 times [2018-11-28 11:17:38,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 11:17:38,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:17:38,122 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/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 [2018-11-28 11:17:38,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:38,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-28 11:17:38,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-28 11:17:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:17:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:17:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,202 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 5 states. [2018-11-28 11:17:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,246 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2018-11-28 11:17:38,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:17:38,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-11-28 11:17:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,247 INFO L225 Difference]: With dead ends: 68 [2018-11-28 11:17:38,247 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 11:17:38,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 11:17:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-28 11:17:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 11:17:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2018-11-28 11:17:38,253 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 48 [2018-11-28 11:17:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,254 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2018-11-28 11:17:38,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:17:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-11-28 11:17:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-28 11:17:38,255 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,255 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 11:17:38,256 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1681907214, now seen corresponding path program 1 times [2018-11-28 11:17:38,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,267 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,267 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:38,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:38,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-28 11:17:38,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-11-28 11:17:38,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:17:38,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:17:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,344 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2018-11-28 11:17:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,359 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2018-11-28 11:17:38,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:17:38,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-11-28 11:17:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,360 INFO L225 Difference]: With dead ends: 68 [2018-11-28 11:17:38,361 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 11:17:38,361 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 11:17:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-11-28 11:17:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:17:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-28 11:17:38,365 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 59 [2018-11-28 11:17:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,365 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-28 11:17:38,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:17:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-28 11:17:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 11:17:38,366 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,366 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 11:17:38,367 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,367 INFO L82 PathProgramCache]: Analyzing trace with hash 804630256, now seen corresponding path program 2 times [2018-11-28 11:17:38,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:38,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,377 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,377 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,378 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:38,393 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:17:38,429 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:17:38,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:38,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-28 11:17:38,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-28 11:17:38,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:17:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:17:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,512 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2018-11-28 11:17:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,560 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2018-11-28 11:17:38,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:17:38,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2018-11-28 11:17:38,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,561 INFO L225 Difference]: With dead ends: 70 [2018-11-28 11:17:38,561 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 11:17:38,562 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 11:17:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-11-28 11:17:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:17:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-11-28 11:17:38,566 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 61 [2018-11-28 11:17:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,566 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-11-28 11:17:38,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:17:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-11-28 11:17:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-28 11:17:38,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,567 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 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] [2018-11-28 11:17:38,568 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1929644946, now seen corresponding path program 3 times [2018-11-28 11:17:38,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:38,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,579 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,580 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,580 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:38,595 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:17:38,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 11:17:38,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:38,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-11-28 11:17:38,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-28 11:17:38,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:17:38,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:17:38,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,686 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2018-11-28 11:17:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,713 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2018-11-28 11:17:38,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:17:38,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2018-11-28 11:17:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,715 INFO L225 Difference]: With dead ends: 70 [2018-11-28 11:17:38,715 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 11:17:38,715 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 11:17:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-28 11:17:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 11:17:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-11-28 11:17:38,721 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 63 [2018-11-28 11:17:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,721 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-11-28 11:17:38,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:17:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-11-28 11:17:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 11:17:38,723 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,723 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 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] [2018-11-28 11:17:38,723 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash -575638740, now seen corresponding path program 4 times [2018-11-28 11:17:38,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:38,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,735 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,735 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,735 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:38,741 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 11:17:38,761 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 11:17:38,761 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:38,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-28 11:17:38,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-28 11:17:38,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:17:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:17:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:38,818 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2018-11-28 11:17:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,835 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-11-28 11:17:38,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:17:38,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2018-11-28 11:17:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,837 INFO L225 Difference]: With dead ends: 78 [2018-11-28 11:17:38,837 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 11:17:38,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 11:17:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-11-28 11:17:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 11:17:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-11-28 11:17:38,844 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 72 [2018-11-28 11:17:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,844 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-11-28 11:17:38,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:17:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-11-28 11:17:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 11:17:38,845 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,845 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 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] [2018-11-28 11:17:38,846 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash -336825618, now seen corresponding path program 5 times [2018-11-28 11:17:38,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:38,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,857 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,857 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,857 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/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 [2018-11-28 11:17:38,864 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 11:17:38,911 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-28 11:17:38,911 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:38,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-28 11:17:38,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:38,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-11-28 11:17:38,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:17:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:17:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,944 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2018-11-28 11:17:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:38,967 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2018-11-28 11:17:38,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:17:38,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2018-11-28 11:17:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:38,968 INFO L225 Difference]: With dead ends: 77 [2018-11-28 11:17:38,968 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 11:17:38,969 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 11:17:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-28 11:17:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 11:17:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-11-28 11:17:38,974 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 74 [2018-11-28 11:17:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:38,974 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-11-28 11:17:38,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:17:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2018-11-28 11:17:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-28 11:17:38,975 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:38,975 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 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] [2018-11-28 11:17:38,975 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:38,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1535873938, now seen corresponding path program 6 times [2018-11-28 11:17:38,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:38,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:38,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:38,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:38,985 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:38,985 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:38,986 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/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 [2018-11-28 11:17:38,993 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 11:17:39,026 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-28 11:17:39,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:39,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-11-28 11:17:39,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-11-28 11:17:39,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:17:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:17:39,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:39,061 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 4 states. [2018-11-28 11:17:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,077 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-11-28 11:17:39,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:17:39,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-11-28 11:17:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,078 INFO L225 Difference]: With dead ends: 76 [2018-11-28 11:17:39,078 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 11:17:39,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:17:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 11:17:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-11-28 11:17:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 11:17:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-11-28 11:17:39,084 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 83 [2018-11-28 11:17:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,084 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-11-28 11:17:39,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:17:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-11-28 11:17:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-28 11:17:39,087 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,087 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 4, 4, 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] [2018-11-28 11:17:39,088 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2064866548, now seen corresponding path program 7 times [2018-11-28 11:17:39,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:39,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,099 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,099 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,099 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:39,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-28 11:17:39,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-28 11:17:39,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:17:39,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:17:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:39,207 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 7 states. [2018-11-28 11:17:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,222 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2018-11-28 11:17:39,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:17:39,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2018-11-28 11:17:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,226 INFO L225 Difference]: With dead ends: 90 [2018-11-28 11:17:39,226 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 11:17:39,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 11:17:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2018-11-28 11:17:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 11:17:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2018-11-28 11:17:39,231 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 85 [2018-11-28 11:17:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,231 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2018-11-28 11:17:39,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:17:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2018-11-28 11:17:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-28 11:17:39,232 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,232 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 5, 5, 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] [2018-11-28 11:17:39,232 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -998650230, now seen corresponding path program 8 times [2018-11-28 11:17:39,232 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:39,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,242 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,242 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,242 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:17:39,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:17:39,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:39,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-28 11:17:39,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-28 11:17:39,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:17:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:17:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:39,348 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 8 states. [2018-11-28 11:17:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,363 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2018-11-28 11:17:39,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:17:39,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2018-11-28 11:17:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,364 INFO L225 Difference]: With dead ends: 92 [2018-11-28 11:17:39,364 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 11:17:39,365 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 11:17:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-28 11:17:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 11:17:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-28 11:17:39,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 87 [2018-11-28 11:17:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,370 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-28 11:17:39,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:17:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-28 11:17:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-28 11:17:39,371 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,371 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 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] [2018-11-28 11:17:39,371 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1433014920, now seen corresponding path program 9 times [2018-11-28 11:17:39,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:39,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,382 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,382 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,382 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,393 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:17:39,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 11:17:39,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:39,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-11-28 11:17:39,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-28 11:17:39,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:17:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:17:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:39,517 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 5 states. [2018-11-28 11:17:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,529 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2018-11-28 11:17:39,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:17:39,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2018-11-28 11:17:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,531 INFO L225 Difference]: With dead ends: 82 [2018-11-28 11:17:39,531 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 11:17:39,531 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:17:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 11:17:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2018-11-28 11:17:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-28 11:17:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2018-11-28 11:17:39,535 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 89 [2018-11-28 11:17:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,536 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2018-11-28 11:17:39,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:17:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2018-11-28 11:17:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-28 11:17:39,536 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,537 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 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] [2018-11-28 11:17:39,537 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash -820958554, now seen corresponding path program 10 times [2018-11-28 11:17:39,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:39,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,547 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,547 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,562 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 11:17:39,588 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 11:17:39,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:39,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-11-28 11:17:39,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-28 11:17:39,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 11:17:39,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:17:39,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:17:39,654 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2018-11-28 11:17:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,681 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2018-11-28 11:17:39,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 11:17:39,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2018-11-28 11:17:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,682 INFO L225 Difference]: With dead ends: 98 [2018-11-28 11:17:39,682 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 11:17:39,683 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:17:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 11:17:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-11-28 11:17:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 11:17:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-11-28 11:17:39,685 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 91 [2018-11-28 11:17:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,686 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-11-28 11:17:39,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 11:17:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-11-28 11:17:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-28 11:17:39,687 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,687 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 6, 6, 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] [2018-11-28 11:17:39,687 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,687 INFO L82 PathProgramCache]: Analyzing trace with hash 639844260, now seen corresponding path program 11 times [2018-11-28 11:17:39,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:39,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,697 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,697 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,697 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 11:17:39,730 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-28 11:17:39,730 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:39,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-11-28 11:17:39,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:39,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-28 11:17:39,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:17:39,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:17:39,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:39,838 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 6 states. [2018-11-28 11:17:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:39,868 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-11-28 11:17:39,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:17:39,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-11-28 11:17:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:39,871 INFO L225 Difference]: With dead ends: 98 [2018-11-28 11:17:39,872 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 11:17:39,872 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 11:17:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-11-28 11:17:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-28 11:17:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-11-28 11:17:39,876 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 93 [2018-11-28 11:17:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:39,876 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-11-28 11:17:39,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:17:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-11-28 11:17:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-28 11:17:39,877 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:39,877 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 7, 7, 6, 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] [2018-11-28 11:17:39,877 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:39,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:39,877 INFO L82 PathProgramCache]: Analyzing trace with hash 266389106, now seen corresponding path program 12 times [2018-11-28 11:17:39,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:39,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:39,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:39,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:39,885 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:39,885 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:39,885 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:39,895 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 11:17:40,644 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-28 11:17:40,644 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:40,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-11-28 11:17:40,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:40,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-28 11:17:40,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:17:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:17:40,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:40,727 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 6 states. [2018-11-28 11:17:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:40,739 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2018-11-28 11:17:40,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:17:40,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-28 11:17:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:40,741 INFO L225 Difference]: With dead ends: 92 [2018-11-28 11:17:40,741 INFO L226 Difference]: Without dead ends: 66 [2018-11-28 11:17:40,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:17:40,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-28 11:17:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-11-28 11:17:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-28 11:17:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-11-28 11:17:40,744 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 102 [2018-11-28 11:17:40,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:40,744 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-11-28 11:17:40,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:17:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-11-28 11:17:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-28 11:17:40,745 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:40,745 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 7, 7, 6, 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] [2018-11-28 11:17:40,745 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:40,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash 902866836, now seen corresponding path program 13 times [2018-11-28 11:17:40,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:40,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:40,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:40,755 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:40,755 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:40,756 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:40,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:40,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2018-11-28 11:17:40,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:40,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-28 11:17:40,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 11:17:40,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 11:17:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:17:40,885 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 10 states. [2018-11-28 11:17:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:40,909 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2018-11-28 11:17:40,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 11:17:40,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2018-11-28 11:17:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:40,912 INFO L225 Difference]: With dead ends: 110 [2018-11-28 11:17:40,912 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 11:17:40,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:17:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 11:17:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-11-28 11:17:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 11:17:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2018-11-28 11:17:40,916 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 104 [2018-11-28 11:17:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:40,917 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2018-11-28 11:17:40,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 11:17:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2018-11-28 11:17:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-28 11:17:40,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:40,918 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 8, 8, 6, 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] [2018-11-28 11:17:40,918 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:40,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:40,918 INFO L82 PathProgramCache]: Analyzing trace with hash -640868522, now seen corresponding path program 14 times [2018-11-28 11:17:40,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:40,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:40,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:40,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:40,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:40,928 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:40,928 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:40,928 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:40,939 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:17:40,977 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:17:40,977 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:40,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2018-11-28 11:17:41,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:41,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-28 11:17:41,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:17:41,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:17:41,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:17:41,070 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 11 states. [2018-11-28 11:17:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:41,097 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2018-11-28 11:17:41,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:17:41,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2018-11-28 11:17:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:41,098 INFO L225 Difference]: With dead ends: 112 [2018-11-28 11:17:41,099 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 11:17:41,099 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:17:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 11:17:41,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-11-28 11:17:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 11:17:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-11-28 11:17:41,102 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 106 [2018-11-28 11:17:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:41,103 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-11-28 11:17:41,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:17:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-11-28 11:17:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-28 11:17:41,103 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:41,104 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 6, 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] [2018-11-28 11:17:41,104 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:41,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1888136856, now seen corresponding path program 15 times [2018-11-28 11:17:41,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:41,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:41,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:41,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,113 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:41,113 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:41,114 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:41,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:17:41,180 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 11:17:41,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:41,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 178 proven. 35 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2018-11-28 11:17:41,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:41,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-28 11:17:41,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:17:41,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:17:41,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:41,233 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 8 states. [2018-11-28 11:17:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:41,265 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2018-11-28 11:17:41,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:17:41,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2018-11-28 11:17:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:41,267 INFO L225 Difference]: With dead ends: 119 [2018-11-28 11:17:41,267 INFO L226 Difference]: Without dead ends: 81 [2018-11-28 11:17:41,268 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-28 11:17:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-11-28 11:17:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-28 11:17:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2018-11-28 11:17:41,271 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 108 [2018-11-28 11:17:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:41,272 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2018-11-28 11:17:41,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:17:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2018-11-28 11:17:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-28 11:17:41,273 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:41,273 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 18, 9, 9, 9, 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] [2018-11-28 11:17:41,273 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:41,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash 946403736, now seen corresponding path program 16 times [2018-11-28 11:17:41,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:41,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:41,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:41,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,284 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:41,285 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:41,285 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:41,292 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 11:17:41,331 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 11:17:41,331 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:41,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-11-28 11:17:41,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:41,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-28 11:17:41,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 11:17:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 11:17:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:17:41,437 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 12 states. [2018-11-28 11:17:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:41,477 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions. [2018-11-28 11:17:41,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 11:17:41,477 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 144 [2018-11-28 11:17:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:41,478 INFO L225 Difference]: With dead ends: 137 [2018-11-28 11:17:41,478 INFO L226 Difference]: Without dead ends: 83 [2018-11-28 11:17:41,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:17:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-28 11:17:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-11-28 11:17:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-28 11:17:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2018-11-28 11:17:41,480 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 144 [2018-11-28 11:17:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:41,480 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2018-11-28 11:17:41,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 11:17:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2018-11-28 11:17:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-28 11:17:41,481 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:41,481 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 18, 10, 10, 9, 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] [2018-11-28 11:17:41,481 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:41,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 901973850, now seen corresponding path program 17 times [2018-11-28 11:17:41,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:41,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,489 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:41,489 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:41,489 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:41,501 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 11:17:41,518 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-11-28 11:17:41,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:41,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 588 proven. 15 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2018-11-28 11:17:41,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:41,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-28 11:17:41,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:17:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:17:41,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:41,607 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2018-11-28 11:17:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:41,635 INFO L93 Difference]: Finished difference Result 136 states and 155 transitions. [2018-11-28 11:17:41,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:17:41,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2018-11-28 11:17:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:41,636 INFO L225 Difference]: With dead ends: 136 [2018-11-28 11:17:41,636 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 11:17:41,637 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 11:17:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-11-28 11:17:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 11:17:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2018-11-28 11:17:41,640 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 146 [2018-11-28 11:17:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:41,640 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2018-11-28 11:17:41,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:17:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2018-11-28 11:17:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-28 11:17:41,641 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:41,641 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 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] [2018-11-28 11:17:41,642 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:41,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:41,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1171480068, now seen corresponding path program 18 times [2018-11-28 11:17:41,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:41,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:41,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:41,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:41,653 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:41,653 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:41,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:41,669 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 11:17:42,445 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-11-28 11:17:42,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:42,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 650 proven. 16 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-11-28 11:17:42,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:42,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-28 11:17:42,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:17:42,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:17:42,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:42,501 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 7 states. [2018-11-28 11:17:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:42,513 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2018-11-28 11:17:42,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:17:42,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2018-11-28 11:17:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:42,514 INFO L225 Difference]: With dead ends: 130 [2018-11-28 11:17:42,515 INFO L226 Difference]: Without dead ends: 89 [2018-11-28 11:17:42,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:17:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-28 11:17:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2018-11-28 11:17:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-28 11:17:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2018-11-28 11:17:42,518 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 155 [2018-11-28 11:17:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:42,518 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2018-11-28 11:17:42,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:17:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2018-11-28 11:17:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-28 11:17:42,519 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:42,519 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 5, 5, 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] [2018-11-28 11:17:42,520 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:42,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 157880730, now seen corresponding path program 19 times [2018-11-28 11:17:42,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:42,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:42,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:42,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,528 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:42,529 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:42,529 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:42,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:17:42,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 650 proven. 25 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-11-28 11:17:42,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:42,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-28 11:17:42,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 11:17:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 11:17:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:42,643 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 8 states. [2018-11-28 11:17:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:42,677 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2018-11-28 11:17:42,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:17:42,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2018-11-28 11:17:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:42,677 INFO L225 Difference]: With dead ends: 132 [2018-11-28 11:17:42,677 INFO L226 Difference]: Without dead ends: 91 [2018-11-28 11:17:42,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:17:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-28 11:17:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2018-11-28 11:17:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 11:17:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2018-11-28 11:17:42,680 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 157 [2018-11-28 11:17:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:42,680 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2018-11-28 11:17:42,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 11:17:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2018-11-28 11:17:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-28 11:17:42,681 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:42,681 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 6, 6, 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] [2018-11-28 11:17:42,681 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:42,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2068320696, now seen corresponding path program 20 times [2018-11-28 11:17:42,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:42,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:42,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:17:42,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,695 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:42,695 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:42,696 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:42,707 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:17:42,756 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:17:42,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:42,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-11-28 11:17:42,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:42,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-28 11:17:42,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 11:17:42,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:17:42,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:17:42,856 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 9 states. [2018-11-28 11:17:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:42,879 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2018-11-28 11:17:42,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 11:17:42,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-11-28 11:17:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:42,880 INFO L225 Difference]: With dead ends: 134 [2018-11-28 11:17:42,880 INFO L226 Difference]: Without dead ends: 93 [2018-11-28 11:17:42,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:17:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-28 11:17:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2018-11-28 11:17:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-28 11:17:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2018-11-28 11:17:42,884 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 159 [2018-11-28 11:17:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:42,885 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2018-11-28 11:17:42,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 11:17:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2018-11-28 11:17:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-28 11:17:42,885 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:42,885 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 7, 7, 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] [2018-11-28 11:17:42,886 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:42,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash -244874666, now seen corresponding path program 21 times [2018-11-28 11:17:42,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:42,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:42,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:42,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:42,895 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:42,895 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:42,895 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:42,909 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 11:17:54,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-28 11:17:54,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:54,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 650 proven. 49 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-11-28 11:17:54,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:54,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-28 11:17:54,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 11:17:54,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 11:17:54,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:17:54,505 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 10 states. [2018-11-28 11:17:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:54,541 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2018-11-28 11:17:54,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 11:17:54,542 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2018-11-28 11:17:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:54,542 INFO L225 Difference]: With dead ends: 136 [2018-11-28 11:17:54,542 INFO L226 Difference]: Without dead ends: 95 [2018-11-28 11:17:54,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:17:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-28 11:17:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2018-11-28 11:17:54,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 11:17:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2018-11-28 11:17:54,548 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 161 [2018-11-28 11:17:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:54,548 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2018-11-28 11:17:54,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 11:17:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2018-11-28 11:17:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-28 11:17:54,549 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:54,549 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 8, 8, 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] [2018-11-28 11:17:54,549 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:54,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:54,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1567441780, now seen corresponding path program 22 times [2018-11-28 11:17:54,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:54,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:54,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:54,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:54,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:54,558 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:54,558 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:54,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:54,572 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 11:17:54,647 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 11:17:54,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:17:54,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:17:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 650 proven. 64 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-11-28 11:17:54,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:17:54,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-28 11:17:54,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:17:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:17:54,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:17:54,736 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 11 states. [2018-11-28 11:17:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:17:54,760 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2018-11-28 11:17:54,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:17:54,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 163 [2018-11-28 11:17:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:17:54,762 INFO L225 Difference]: With dead ends: 137 [2018-11-28 11:17:54,762 INFO L226 Difference]: Without dead ends: 96 [2018-11-28 11:17:54,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:17:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-28 11:17:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-11-28 11:17:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-28 11:17:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-11-28 11:17:54,766 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 163 [2018-11-28 11:17:54,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:17:54,766 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-11-28 11:17:54,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:17:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-11-28 11:17:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-28 11:17:54,768 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:17:54,768 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 9, 9, 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] [2018-11-28 11:17:54,768 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:17:54,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:17:54,768 INFO L82 PathProgramCache]: Analyzing trace with hash -553175790, now seen corresponding path program 23 times [2018-11-28 11:17:54,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:17:54,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:17:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:54,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:17:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:17:54,776 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-28 11:17:54,776 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-28 11:17:54,776 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-28 11:17:54,796 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 11:17:57,427 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-11-28 11:17:57,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-28 11:17:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:17:57,830 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:17:57,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:17:57 BoogieIcfgContainer [2018-11-28 11:17:57,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:17:57,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:17:57,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:17:57,912 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:17:57,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:37" (3/4) ... [2018-11-28 11:17:57,914 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 11:17:58,000 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_04988a71-4d05-4716-b4e2-6c2e0e48d9bf/bin-2019/uautomizer/witness.graphml [2018-11-28 11:17:58,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:17:58,001 INFO L168 Benchmark]: Toolchain (without parser) took 21209.80 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.3 MB). Free memory was 955.3 MB in the beginning and 1.3 GB in the end (delta: -332.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:58,002 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:58,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.91 ms. Allocated memory is still 1.0 GB. Free memory was 955.3 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:58,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.50 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:58,003 INFO L168 Benchmark]: Boogie Preprocessor took 64.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:58,003 INFO L168 Benchmark]: RCFGBuilder took 235.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:58,004 INFO L168 Benchmark]: TraceAbstraction took 20613.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -167.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:17:58,004 INFO L168 Benchmark]: Witness Printer took 88.90 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:17:58,005 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.91 ms. Allocated memory is still 1.0 GB. Free memory was 955.3 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.50 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -207.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20613.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -167.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 88.90 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 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] int x[10]; VAL [x={14:0}] [L32] CALL init_nondet(x) VAL [x={14:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=6, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=7, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=8, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=9, x={14:0}, x={14:0}] [L6] COND TRUE i < 10 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=10, x={14:0}, x={14:0}] [L6] COND FALSE !(i < 10) VAL [i=10, x={14:0}, x={14:0}] [L32] RET init_nondet(x) VAL [x={14:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={14:0}] [L38] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483643, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=-2147483643, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483643, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967288, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-6442450931, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-6442450931, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-6442450931, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-8589934577, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2147483644, cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-2147483644, x={14:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-2147483644, temp=-2147483648, x={14:0}] [L41] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483643, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=-2147483643, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483643, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967288, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-6442450931, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-6442450931, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-6442450931, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-8589934577, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2147483644, cnt=4, i=10, ret=-8589934577, x={14:0}, x={14:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-2147483644, ret=-2147483644, temp=-2147483648, x={14:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=5, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=6, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=7, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=8, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND TRUE i<10 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=9, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L43] COND FALSE !(i<10 -1) VAL [i=9, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L46] x[10 -1] = temp VAL [i=9, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L47] CALL, EXPR rangesum(x) VAL [x={14:0}] [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={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483645, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=7, ret=-2147483645, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483645, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967288, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967288, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-6442450934, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=3, i=9, ret=-6442450934, x={14:0}, x={14:0}] [L17] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-6442450934, x={14:0}, x={14:0}] [L18] COND TRUE i > 10/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=4, i=9, ret=-8589934581, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=4, i=10, ret=-8589934581, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=-8589934581, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2147483645, cnt=4, i=10, ret=-8589934581, x={14:0}, x={14:0}] [L47] RET, EXPR rangesum(x) VAL [i=9, rangesum(x)=-2147483645, ret=-2147483644, ret2=-2147483644, temp=-2147483647, x={14:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=9, ret=-2147483644, ret2=-2147483644, ret5=-2147483645, temp=-2147483647, x={14:0}] [L50] __VERIFIER_error() VAL [i=9, ret=-2147483644, ret2=-2147483644, ret5=-2147483645, temp=-2147483647, x={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. UNSAFE Result, 20.5s OverallTime, 28 OverallIterations, 30 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 967 SDtfs, 161 SDslu, 1730 SDs, 0 SdLazy, 399 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2542 GetRequests, 2417 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=27, 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, 27 MinimizatonAttempts, 30 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 16.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 2851 NumberOfCodeBlocks, 2320 NumberOfCodeBlocksAsserted, 107 NumberOfCheckSat, 2620 ConstructedInterpolants, 0 QuantifiedInterpolants, 340902 SizeOfPredicates, 26 NumberOfNonLiveVariables, 5818 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 13908/14478 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...