./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 279fae57395782089eff32ec1396d1726d808c7f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 09:35:26,115 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:35:26,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:35:26,123 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:35:26,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:35:26,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:35:26,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:35:26,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:35:26,127 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:35:26,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:35:26,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:35:26,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:35:26,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:35:26,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:35:26,131 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:35:26,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:35:26,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:35:26,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:35:26,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:35:26,136 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:35:26,138 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:35:26,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:35:26,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:35:26,140 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:35:26,140 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:35:26,141 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:35:26,142 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:35:26,142 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:35:26,143 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:35:26,143 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:35:26,144 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:35:26,144 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:35:26,144 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:35:26,144 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:35:26,146 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:35:26,146 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:35:26,146 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:35:26,156 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:35:26,156 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:35:26,156 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:35:26,156 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:35:26,157 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:35:26,157 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:35:26,157 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:35:26,157 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:35:26,158 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:35:26,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:35:26,159 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:35:26,159 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:35:26,160 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:35:26,160 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:35:26,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:35:26,160 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_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 -> 279fae57395782089eff32ec1396d1726d808c7f [2018-11-18 09:35:26,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:35:26,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:35:26,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:35:26,196 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:35:26,197 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:35:26,197 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-11-18 09:35:26,234 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/data/5ad2adc6c/055656a137bf4a119a7148f07d20b22e/FLAGa04bda308 [2018-11-18 09:35:26,583 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:35:26,584 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-11-18 09:35:26,589 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/data/5ad2adc6c/055656a137bf4a119a7148f07d20b22e/FLAGa04bda308 [2018-11-18 09:35:26,997 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/data/5ad2adc6c/055656a137bf4a119a7148f07d20b22e [2018-11-18 09:35:26,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:35:27,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:35:27,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:35:27,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:35:27,003 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:35:27,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:26" (1/1) ... [2018-11-18 09:35:27,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5102b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27, skipping insertion in model container [2018-11-18 09:35:27,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:26" (1/1) ... [2018-11-18 09:35:27,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:35:27,026 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:35:27,140 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:35:27,145 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:35:27,162 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:35:27,171 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:35:27,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27 WrapperNode [2018-11-18 09:35:27,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:35:27,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:35:27,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:35:27,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:35:27,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... [2018-11-18 09:35:27,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:35:27,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:35:27,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:35:27,197 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:35:27,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:35:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:35:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-11-18 09:35:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-11-18 09:35:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:35:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:35:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:35:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:35:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 09:35:27,436 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:35:27,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:27 BoogieIcfgContainer [2018-11-18 09:35:27,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:35:27,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:35:27,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:35:27,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:35:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:35:26" (1/3) ... [2018-11-18 09:35:27,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce3e8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:27, skipping insertion in model container [2018-11-18 09:35:27,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:27" (2/3) ... [2018-11-18 09:35:27,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce3e8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:27, skipping insertion in model container [2018-11-18 09:35:27,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:27" (3/3) ... [2018-11-18 09:35:27,443 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum_false-unreach-call_true-termination.i [2018-11-18 09:35:27,451 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:35:27,457 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:35:27,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:35:27,497 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:35:27,497 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:35:27,497 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:35:27,497 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:35:27,497 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:35:27,497 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:35:27,498 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:35:27,498 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:35:27,498 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:35:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 09:35:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 09:35:27,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:27,513 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:27,515 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:27,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:27,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1453479608, now seen corresponding path program 1 times [2018-11-18 09:35:27,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:27,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:27,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:27,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:27,602 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-11-18 09:35:27,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:35:27,603 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:27,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:27,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:35:27,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:27,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:35:27,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:35:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:35:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:35:27,701 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 09:35:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:27,720 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2018-11-18 09:35:27,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:35:27,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2018-11-18 09:35:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:27,728 INFO L225 Difference]: With dead ends: 72 [2018-11-18 09:35:27,728 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 09:35:27,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:35:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 09:35:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 09:35:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 09:35:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 09:35:27,754 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 38 [2018-11-18 09:35:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:27,754 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 09:35:27,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:35:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 09:35:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 09:35:27,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:27,756 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:27,756 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:27,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash -538232150, now seen corresponding path program 1 times [2018-11-18 09:35:27,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:27,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,767 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:27,767 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:27,768 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:27,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:27,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:35:27,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:27,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:35:27,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:35:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:35:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:35:27,866 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2018-11-18 09:35:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:27,885 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2018-11-18 09:35:27,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:35:27,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-11-18 09:35:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:27,887 INFO L225 Difference]: With dead ends: 63 [2018-11-18 09:35:27,887 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 09:35:27,888 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:35:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 09:35:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-11-18 09:35:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 09:35:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-18 09:35:27,893 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 43 [2018-11-18 09:35:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:27,894 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-18 09:35:27,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:35:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-18 09:35:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 09:35:27,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:27,895 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:27,895 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:27,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1233502645, now seen corresponding path program 1 times [2018-11-18 09:35:27,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:27,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:35:28,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:28,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 09:35:28,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:35:28,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:35:28,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:35:28,041 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 9 states. [2018-11-18 09:35:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:28,171 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2018-11-18 09:35:28,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:35:28,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-11-18 09:35:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:28,174 INFO L225 Difference]: With dead ends: 69 [2018-11-18 09:35:28,175 INFO L226 Difference]: Without dead ends: 65 [2018-11-18 09:35:28,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:35:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-18 09:35:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2018-11-18 09:35:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 09:35:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2018-11-18 09:35:28,186 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 43 [2018-11-18 09:35:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:28,187 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2018-11-18 09:35:28,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:35:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2018-11-18 09:35:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 09:35:28,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:28,188 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:28,188 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:28,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:28,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1384521611, now seen corresponding path program 1 times [2018-11-18 09:35:28,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:28,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:28,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,205 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:28,205 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:28,205 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:28,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:28,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 09:35:28,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:28,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:35:28,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:35:28,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:35:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:28,294 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 4 states. [2018-11-18 09:35:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:28,345 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2018-11-18 09:35:28,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:35:28,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-11-18 09:35:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:28,346 INFO L225 Difference]: With dead ends: 93 [2018-11-18 09:35:28,346 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 09:35:28,347 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 09:35:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-11-18 09:35:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 09:35:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2018-11-18 09:35:28,358 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 47 [2018-11-18 09:35:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:28,359 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2018-11-18 09:35:28,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:35:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2018-11-18 09:35:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 09:35:28,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:28,360 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:28,361 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:28,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -408942444, now seen corresponding path program 1 times [2018-11-18 09:35:28,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:28,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:28,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,377 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:28,377 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:28,378 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 09:35:28,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:28,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 09:35:28,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:35:28,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-18 09:35:28,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:35:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:35:28,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:35:28,495 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 5 states. [2018-11-18 09:35:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:28,553 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2018-11-18 09:35:28,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:35:28,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2018-11-18 09:35:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:28,554 INFO L225 Difference]: With dead ends: 96 [2018-11-18 09:35:28,554 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 09:35:28,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:35:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 09:35:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-18 09:35:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-18 09:35:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-11-18 09:35:28,560 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 50 [2018-11-18 09:35:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:28,561 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-11-18 09:35:28,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:35:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-11-18 09:35:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 09:35:28,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:28,562 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:28,562 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:28,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -973670379, now seen corresponding path program 2 times [2018-11-18 09:35:28,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:28,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:28,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,577 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:28,577 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:28,578 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 09:35:28,586 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:35:28,610 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:35:28,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:35:28,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-18 09:35:28,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:28,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:35:28,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:35:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:35:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:28,667 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 4 states. [2018-11-18 09:35:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:28,698 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2018-11-18 09:35:28,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:35:28,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-18 09:35:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:28,699 INFO L225 Difference]: With dead ends: 95 [2018-11-18 09:35:28,699 INFO L226 Difference]: Without dead ends: 60 [2018-11-18 09:35:28,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-18 09:35:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-11-18 09:35:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 09:35:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2018-11-18 09:35:28,708 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 53 [2018-11-18 09:35:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:28,709 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2018-11-18 09:35:28,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:35:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2018-11-18 09:35:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 09:35:28,711 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:28,711 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:28,711 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:28,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1529849294, now seen corresponding path program 1 times [2018-11-18 09:35:28,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:28,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:28,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:28,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,730 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:28,731 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:28,731 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:28,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:28,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-18 09:35:28,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:35:28,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-11-18 09:35:28,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:35:28,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:35:28,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:35:28,836 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 5 states. [2018-11-18 09:35:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:28,887 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2018-11-18 09:35:28,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:35:28,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2018-11-18 09:35:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:28,888 INFO L225 Difference]: With dead ends: 102 [2018-11-18 09:35:28,888 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 09:35:28,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:35:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 09:35:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2018-11-18 09:35:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-18 09:35:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2018-11-18 09:35:28,894 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 65 [2018-11-18 09:35:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:28,894 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2018-11-18 09:35:28,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:35:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2018-11-18 09:35:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-18 09:35:28,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:28,896 INFO L375 BasicCegarLoop]: trace histogram [10, 7, 7, 6, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:28,896 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:28,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1085461511, now seen corresponding path program 2 times [2018-11-18 09:35:28,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:28,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:28,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:28,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:28,910 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:28,910 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:28,911 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:28,923 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:35:28,947 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:35:28,947 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:35:28,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-18 09:35:28,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:28,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:35:28,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:35:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:35:28,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:28,996 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 4 states. [2018-11-18 09:35:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:29,034 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2018-11-18 09:35:29,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:35:29,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2018-11-18 09:35:29,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:29,035 INFO L225 Difference]: With dead ends: 99 [2018-11-18 09:35:29,035 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 09:35:29,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 09:35:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2018-11-18 09:35:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 09:35:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2018-11-18 09:35:29,042 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 77 [2018-11-18 09:35:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:29,043 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2018-11-18 09:35:29,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:35:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2018-11-18 09:35:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-18 09:35:29,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:29,044 INFO L375 BasicCegarLoop]: trace histogram [10, 7, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:29,044 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:29,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:29,044 INFO L82 PathProgramCache]: Analyzing trace with hash -66947257, now seen corresponding path program 1 times [2018-11-18 09:35:29,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:29,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:29,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:29,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,057 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:29,057 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:29,057 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:29,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:29,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-18 09:35:29,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:35:29,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-18 09:35:29,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:35:29,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:35:29,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:35:29,164 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 9 states. [2018-11-18 09:35:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:29,261 INFO L93 Difference]: Finished difference Result 145 states and 179 transitions. [2018-11-18 09:35:29,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:35:29,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2018-11-18 09:35:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:29,263 INFO L225 Difference]: With dead ends: 145 [2018-11-18 09:35:29,263 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 09:35:29,264 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:35:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 09:35:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2018-11-18 09:35:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 09:35:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2018-11-18 09:35:29,271 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 80 [2018-11-18 09:35:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:29,272 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2018-11-18 09:35:29,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:35:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2018-11-18 09:35:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-18 09:35:29,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:29,273 INFO L375 BasicCegarLoop]: trace histogram [10, 7, 7, 6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:29,273 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:29,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:29,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2082082568, now seen corresponding path program 2 times [2018-11-18 09:35:29,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:29,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:29,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:29,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,288 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:29,288 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:29,288 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:29,310 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:35:29,335 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:35:29,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:35:29,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 71 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-18 09:35:29,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:35:29,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-18 09:35:29,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:35:29,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:35:29,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:35:29,410 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 9 states. [2018-11-18 09:35:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:29,453 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2018-11-18 09:35:29,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:35:29,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2018-11-18 09:35:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:29,453 INFO L225 Difference]: With dead ends: 120 [2018-11-18 09:35:29,453 INFO L226 Difference]: Without dead ends: 76 [2018-11-18 09:35:29,454 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:35:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-18 09:35:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2018-11-18 09:35:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-18 09:35:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2018-11-18 09:35:29,458 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 83 [2018-11-18 09:35:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:29,458 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2018-11-18 09:35:29,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:35:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2018-11-18 09:35:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-18 09:35:29,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:29,459 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:29,460 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:29,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1792689956, now seen corresponding path program 1 times [2018-11-18 09:35:29,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:29,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:29,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:29,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,468 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:29,468 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:29,468 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:29,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:29,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 115 proven. 10 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-18 09:35:29,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:35:29,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-18 09:35:29,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:35:29,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:35:29,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:35:29,557 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand 8 states. [2018-11-18 09:35:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:29,603 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-11-18 09:35:29,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:35:29,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2018-11-18 09:35:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:35:29,605 INFO L225 Difference]: With dead ends: 114 [2018-11-18 09:35:29,605 INFO L226 Difference]: Without dead ends: 81 [2018-11-18 09:35:29,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:35:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-18 09:35:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2018-11-18 09:35:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-18 09:35:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2018-11-18 09:35:29,611 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 91 [2018-11-18 09:35:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:35:29,611 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2018-11-18 09:35:29,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:35:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2018-11-18 09:35:29,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-18 09:35:29,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:35:29,612 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:35:29,613 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:35:29,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:29,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1649796690, now seen corresponding path program 2 times [2018-11-18 09:35:29,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:29,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:29,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:29,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:29,621 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 09:35:29,621 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 09:35:29,621 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/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 [2018-11-18 09:35:29,628 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:35:29,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:35:29,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-18 09:35:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:29,748 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:35:29,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:35:29 BoogieIcfgContainer [2018-11-18 09:35:29,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:35:29,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:35:29,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:35:29,794 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:35:29,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:27" (3/4) ... [2018-11-18 09:35:29,796 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 09:35:29,869 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a2bdbb00-0d62-4f99-89ff-f7967bda5576/bin-2019/uautomizer/witness.graphml [2018-11-18 09:35:29,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:35:29,870 INFO L168 Benchmark]: Toolchain (without parser) took 2870.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -109.5 MB). Peak memory consumption was 91.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:29,871 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:29,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:29,871 INFO L168 Benchmark]: Boogie Preprocessor took 24.25 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:29,871 INFO L168 Benchmark]: RCFGBuilder took 240.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:29,872 INFO L168 Benchmark]: TraceAbstraction took 2355.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:29,872 INFO L168 Benchmark]: Witness Printer took 75.79 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: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:29,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.25 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 240.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2355.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 11.5 GB. * Witness Printer took 75.79 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: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 53]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int N; VAL [\old(N)=7, N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] FCALL int x[N]; VAL [\old(N)=0, N=3, x={9:0}] [L35] CALL init_nondet(x) VAL [\old(N)=0, N=3, x={9:0}] [L6] int i; [L7] i = 0 VAL [\old(N)=0, i=0, N=3, x={9:0}, x={9:0}] [L7] COND TRUE i < N [L8] FCALL x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, i=1, N=3, x={9:0}, x={9:0}] [L7] COND TRUE i < N [L8] FCALL x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, i=2, N=3, x={9:0}, x={9:0}] [L7] COND TRUE i < N [L8] FCALL x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, i=3, N=3, x={9:0}, x={9:0}] [L7] COND FALSE, RET !(i < N) VAL [\old(N)=0, i=3, N=3, x={9:0}, x={9:0}] [L35] init_nondet(x) VAL [\old(N)=0, N=3, x={9:0}] [L36] int temp; [L37] int ret; [L38] int ret2; [L39] int ret5; VAL [\old(N)=0, N=3, x={9:0}] [L41] CALL, EXPR rangesum(x) VAL [\old(N)=0, N=3, x={9:0}] [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND TRUE i > N/2 [L20] EXPR, FCALL x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, cnt=1, i=2, N=3, ret=-1, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L18] COND FALSE !(i < N) VAL [\old(N)=0, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, \result=-1, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L41] EXPR rangesum(x) VAL [\old(N)=0, N=3, rangesum(x)=-1, x={9:0}] [L41] ret = rangesum(x) [L43] EXPR, FCALL x[0] [L43] temp=x[0] [L43] EXPR, FCALL x[1] [L43] FCALL x[0] = x[1] [L43] FCALL x[1] = temp VAL [\old(N)=0, N=3, ret=-1, temp=2247, x={9:0}] [L44] CALL, EXPR rangesum(x) VAL [\old(N)=0, N=3, x={9:0}] [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND TRUE i > N/2 [L20] EXPR, FCALL x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, cnt=1, i=2, N=3, ret=-1, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L18] COND FALSE !(i < N) VAL [\old(N)=0, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, \result=-1, cnt=1, i=3, N=3, ret=-1, x={9:0}, x={9:0}] [L44] EXPR rangesum(x) VAL [\old(N)=0, N=3, rangesum(x)=-1, ret=-1, temp=2247, x={9:0}] [L44] ret2 = rangesum(x) [L45] EXPR, FCALL x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [\old(N)=0, i=0, N=3, ret=-1, ret2=-1, temp=0, x={9:0}] [L46] COND TRUE i N/2) VAL [\old(N)=0, cnt=0, i=0, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, cnt=0, i=1, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i < N VAL [\old(N)=0, cnt=0, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L19] COND TRUE i > N/2 [L20] EXPR, FCALL x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, cnt=1, i=2, N=3, ret=0, x={9:0}, x={9:0}] [L18] i++ VAL [\old(N)=0, cnt=1, i=3, N=3, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i < N) VAL [\old(N)=0, cnt=1, i=3, N=3, ret=0, x={9:0}, x={9:0}] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, \result=0, cnt=1, i=3, N=3, ret=0, x={9:0}, x={9:0}] [L50] EXPR rangesum(x) VAL [\old(N)=0, i=2, N=3, rangesum(x)=0, ret=-1, ret2=-1, temp=0, x={9:0}] [L50] ret5 = rangesum(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [\old(N)=0, i=2, N=3, ret=-1, ret2=-1, ret5=0, temp=0, x={9:0}] [L53] __VERIFIER_error() VAL [\old(N)=0, i=2, N=3, ret=-1, ret2=-1, ret5=0, temp=0, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. UNSAFE Result, 2.3s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 397 SDtfs, 261 SDslu, 650 SDs, 0 SdLazy, 437 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 633 GetRequests, 580 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 802 NumberOfCodeBlocks, 802 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 95067 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1974 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 866/903 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...