./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 457415f9b28998cf0ba7f80d69eaf14873f5a98f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:33:25,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:33:25,138 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:33:25,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:33:25,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:33:25,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:33:25,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:33:25,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:33:25,148 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:33:25,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:33:25,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:33:25,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:33:25,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:33:25,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:33:25,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:33:25,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:33:25,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:33:25,153 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:33:25,155 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:33:25,156 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:33:25,157 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:33:25,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:33:25,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:33:25,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:33:25,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:33:25,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:33:25,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:33:25,160 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:33:25,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:33:25,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:33:25,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:33:25,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:33:25,162 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:33:25,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:33:25,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:33:25,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:33:25,164 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 10:33:25,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:33:25,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:33:25,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:33:25,172 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:33:25,173 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:33:25,173 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:33:25,173 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:33:25,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:33:25,174 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 10:33:25,175 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 10:33:25,175 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:33:25,175 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:33:25,175 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 10:33:25,175 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:33:25,175 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:25,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 10:33:25,176 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:33:25,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:33:25,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 10:33:25,177 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_c3b1fc85-062b-4cb9-8438-710b67192701/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 457415f9b28998cf0ba7f80d69eaf14873f5a98f [2018-11-28 10:33:25,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:33:25,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:33:25,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:33:25,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:33:25,215 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:33:25,215 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-28 10:33:25,260 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/data/49fe1d8dd/d2a89d9c5b5b4d12ac12818a1db2954e/FLAG9b3de1c22 [2018-11-28 10:33:25,598 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:33:25,599 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-28 10:33:25,604 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/data/49fe1d8dd/d2a89d9c5b5b4d12ac12818a1db2954e/FLAG9b3de1c22 [2018-11-28 10:33:26,020 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/data/49fe1d8dd/d2a89d9c5b5b4d12ac12818a1db2954e [2018-11-28 10:33:26,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:33:26,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:33:26,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:26,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:33:26,026 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:33:26,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74069c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26, skipping insertion in model container [2018-11-28 10:33:26,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:33:26,042 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:33:26,131 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:26,134 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:33:26,145 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:26,154 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:33:26,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26 WrapperNode [2018-11-28 10:33:26,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:26,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:26,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:33:26,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:33:26,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:26,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:33:26,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:33:26,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:33:26,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... [2018-11-28 10:33:26,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:33:26,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:33:26,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:33:26,181 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:33:26,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:33:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:33:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-28 10:33:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-28 10:33:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:33:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:33:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:33:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:33:26,369 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:33:26,369 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 10:33:26,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26 BoogieIcfgContainer [2018-11-28 10:33:26,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:33:26,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:33:26,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:33:26,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:33:26,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:33:26" (1/3) ... [2018-11-28 10:33:26,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abd293e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:26, skipping insertion in model container [2018-11-28 10:33:26,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:26" (2/3) ... [2018-11-28 10:33:26,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abd293e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:26, skipping insertion in model container [2018-11-28 10:33:26,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26" (3/3) ... [2018-11-28 10:33:26,375 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-28 10:33:26,382 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:33:26,386 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 10:33:26,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 10:33:26,414 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:33:26,414 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:33:26,414 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 10:33:26,415 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:33:26,415 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:33:26,415 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:33:26,415 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:33:26,415 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:33:26,415 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:33:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-28 10:33:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 10:33:26,435 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,436 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,438 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:26,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,444 INFO L82 PathProgramCache]: Analyzing trace with hash 968375894, now seen corresponding path program 1 times [2018-11-28 10:33:26,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:26,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:26,578 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-11-28 10:33:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,699 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 10:33:26,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 10:33:26,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 10:33:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,707 INFO L225 Difference]: With dead ends: 49 [2018-11-28 10:33:26,707 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 10:33:26,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 10:33:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-28 10:33:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 10:33:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-28 10:33:26,735 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2018-11-28 10:33:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,736 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-28 10:33:26,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-28 10:33:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 10:33:26,736 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,736 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,737 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:26,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash 968376118, now seen corresponding path program 1 times [2018-11-28 10:33:26,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:26,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:26,792 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-28 10:33:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,835 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-28 10:33:26,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 10:33:26,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 10:33:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,836 INFO L225 Difference]: With dead ends: 38 [2018-11-28 10:33:26,836 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 10:33:26,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 10:33:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2018-11-28 10:33:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 10:33:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-28 10:33:26,840 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2018-11-28 10:33:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,841 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-28 10:33:26,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-28 10:33:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 10:33:26,841 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,841 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,841 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:26,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash -45118316, now seen corresponding path program 1 times [2018-11-28 10:33:26,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:26,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:26,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:26,883 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-28 10:33:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,922 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-11-28 10:33:26,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 10:33:26,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-28 10:33:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,924 INFO L225 Difference]: With dead ends: 37 [2018-11-28 10:33:26,924 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 10:33:26,924 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 10:33:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-28 10:33:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 10:33:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-28 10:33:26,929 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2018-11-28 10:33:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,929 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-28 10:33:26,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-28 10:33:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 10:33:26,930 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,930 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:26,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,930 INFO L82 PathProgramCache]: Analyzing trace with hash -45111365, now seen corresponding path program 1 times [2018-11-28 10:33:26,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:26,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:26,976 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2018-11-28 10:33:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:27,034 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-28 10:33:27,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 10:33:27,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-28 10:33:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:27,035 INFO L225 Difference]: With dead ends: 36 [2018-11-28 10:33:27,035 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 10:33:27,035 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 10:33:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 10:33:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 10:33:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 10:33:27,040 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2018-11-28 10:33:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:27,041 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 10:33:27,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 10:33:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 10:33:27,041 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:27,041 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:27,042 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:27,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash -489425099, now seen corresponding path program 1 times [2018-11-28 10:33:27,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:27,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:27,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:27,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:27,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:27,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:27,085 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2018-11-28 10:33:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:27,133 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-11-28 10:33:27,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 10:33:27,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 10:33:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:27,134 INFO L225 Difference]: With dead ends: 47 [2018-11-28 10:33:27,134 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 10:33:27,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 10:33:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2018-11-28 10:33:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 10:33:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-11-28 10:33:27,140 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 17 [2018-11-28 10:33:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:27,140 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-11-28 10:33:27,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-11-28 10:33:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 10:33:27,141 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:27,141 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:27,141 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:27,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:27,141 INFO L82 PathProgramCache]: Analyzing trace with hash 945154704, now seen corresponding path program 1 times [2018-11-28 10:33:27,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:27,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:27,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:27,165 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:27,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 10:33:27,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-11-28 10:33:27,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:27,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:27,252 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 8 states. [2018-11-28 10:33:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:27,506 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-11-28 10:33:27,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 10:33:27,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-28 10:33:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:27,509 INFO L225 Difference]: With dead ends: 54 [2018-11-28 10:33:27,509 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 10:33:27,510 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-11-28 10:33:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 10:33:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-11-28 10:33:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 10:33:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-28 10:33:27,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-11-28 10:33:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:27,517 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-28 10:33:27,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-28 10:33:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 10:33:27,518 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:27,518 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:27,518 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:27,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash 945154928, now seen corresponding path program 1 times [2018-11-28 10:33:27,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:27,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:27,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:27,571 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:27,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:27,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 10:33:27,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 10:33:27,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 10:33:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 10:33:27,608 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-11-28 10:33:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:27,675 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-28 10:33:27,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 10:33:27,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-28 10:33:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:27,677 INFO L225 Difference]: With dead ends: 42 [2018-11-28 10:33:27,677 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 10:33:27,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-28 10:33:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 10:33:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-28 10:33:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 10:33:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-28 10:33:27,681 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 17 [2018-11-28 10:33:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:27,682 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-28 10:33:27,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 10:33:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-28 10:33:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 10:33:27,682 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:27,682 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:27,683 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:27,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2007691164, now seen corresponding path program 1 times [2018-11-28 10:33:27,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:27,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:27,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:27,726 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:27,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 10:33:27,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-11-28 10:33:27,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 10:33:27,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 10:33:27,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-28 10:33:27,785 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 10 states. [2018-11-28 10:33:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:27,858 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-28 10:33:27,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 10:33:27,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-11-28 10:33:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:27,859 INFO L225 Difference]: With dead ends: 49 [2018-11-28 10:33:27,859 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 10:33:27,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-28 10:33:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 10:33:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-28 10:33:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 10:33:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-28 10:33:27,865 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 18 [2018-11-28 10:33:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:27,865 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-28 10:33:27,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 10:33:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-28 10:33:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 10:33:27,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:27,866 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:27,866 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:27,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:27,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1188297686, now seen corresponding path program 2 times [2018-11-28 10:33:27,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:27,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:27,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:27,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:27,916 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:27,931 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 10:33:27,937 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 10:33:27,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:27,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:27,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:27,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 10:33:27,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 10:33:27,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 10:33:27,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 10:33:27,961 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 7 states. [2018-11-28 10:33:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:28,041 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-11-28 10:33:28,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 10:33:28,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-28 10:33:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:28,042 INFO L225 Difference]: With dead ends: 55 [2018-11-28 10:33:28,042 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 10:33:28,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-28 10:33:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 10:33:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2018-11-28 10:33:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 10:33:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-28 10:33:28,047 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2018-11-28 10:33:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:28,047 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-28 10:33:28,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 10:33:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-28 10:33:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 10:33:28,048 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:28,048 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:28,048 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:28,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 894148066, now seen corresponding path program 1 times [2018-11-28 10:33:28,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:28,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:28,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:28,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:28,086 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:28,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:28,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 10:33:28,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 10:33:28,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 10:33:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-28 10:33:28,119 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2018-11-28 10:33:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:28,221 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-28 10:33:28,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 10:33:28,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-28 10:33:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:28,222 INFO L225 Difference]: With dead ends: 41 [2018-11-28 10:33:28,222 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 10:33:28,223 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-28 10:33:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 10:33:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2018-11-28 10:33:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 10:33:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-28 10:33:28,228 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2018-11-28 10:33:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:28,228 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-28 10:33:28,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 10:33:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-28 10:33:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 10:33:28,229 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:28,229 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:28,229 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:28,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1817477447, now seen corresponding path program 1 times [2018-11-28 10:33:28,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:28,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:28,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:28,291 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:28,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:28,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 10:33:28,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 10:33:28,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 10:33:28,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-28 10:33:28,327 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-11-28 10:33:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:28,395 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-11-28 10:33:28,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 10:33:28,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-28 10:33:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:28,396 INFO L225 Difference]: With dead ends: 47 [2018-11-28 10:33:28,396 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 10:33:28,396 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-28 10:33:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 10:33:28,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2018-11-28 10:33:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 10:33:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-28 10:33:28,402 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-11-28 10:33:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:28,402 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-28 10:33:28,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 10:33:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-28 10:33:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 10:33:28,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:28,403 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:28,403 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:28,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash 774242216, now seen corresponding path program 2 times [2018-11-28 10:33:28,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:28,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:28,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:28,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:28,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:28,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 10:33:28,510 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 10:33:28,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:28,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:28,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 10:33:28,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 10:33:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 10:33:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:33:28,534 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-11-28 10:33:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:28,655 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-11-28 10:33:28,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 10:33:28,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-11-28 10:33:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:28,656 INFO L225 Difference]: With dead ends: 54 [2018-11-28 10:33:28,656 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 10:33:28,656 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-11-28 10:33:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 10:33:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2018-11-28 10:33:28,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 10:33:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-11-28 10:33:28,662 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2018-11-28 10:33:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:28,662 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-11-28 10:33:28,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 10:33:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-11-28 10:33:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 10:33:28,663 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:28,663 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:28,663 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:28,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1039829778, now seen corresponding path program 3 times [2018-11-28 10:33:28,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:28,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:28,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:28,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:28,732 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:28,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 10:33:28,761 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 10:33:28,762 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:28,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:28,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:28,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 10:33:28,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 10:33:28,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 10:33:28,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-28 10:33:28,791 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 13 states. [2018-11-28 10:33:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:28,907 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-11-28 10:33:28,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 10:33:28,908 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-28 10:33:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:28,908 INFO L225 Difference]: With dead ends: 65 [2018-11-28 10:33:28,908 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 10:33:28,909 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-28 10:33:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 10:33:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2018-11-28 10:33:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:33:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-28 10:33:28,916 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2018-11-28 10:33:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:28,916 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-28 10:33:28,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 10:33:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-28 10:33:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 10:33:28,917 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:28,917 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:28,918 INFO L423 AbstractCegarLoop]: === Iteration 14 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:28,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -175937325, now seen corresponding path program 2 times [2018-11-28 10:33:28,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:28,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:28,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:28,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:29,012 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:29,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 10:33:29,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 10:33:29,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:29,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:29,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 10:33:29,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 10:33:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 10:33:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-28 10:33:29,064 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 13 states. [2018-11-28 10:33:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:29,151 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2018-11-28 10:33:29,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 10:33:29,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-28 10:33:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:29,152 INFO L225 Difference]: With dead ends: 71 [2018-11-28 10:33:29,152 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 10:33:29,152 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-28 10:33:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 10:33:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2018-11-28 10:33:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 10:33:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-11-28 10:33:29,159 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 36 [2018-11-28 10:33:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:29,159 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-11-28 10:33:29,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 10:33:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-11-28 10:33:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 10:33:29,160 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:29,160 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:29,160 INFO L423 AbstractCegarLoop]: === Iteration 15 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:29,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1655528884, now seen corresponding path program 4 times [2018-11-28 10:33:29,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:29,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:29,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:29,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:29,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 10:33:29,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:29,217 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:29,229 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 10:33:29,239 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 10:33:29,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:29,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 10:33:29,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:29,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 20 [2018-11-28 10:33:29,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 10:33:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 10:33:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2018-11-28 10:33:29,481 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 21 states. [2018-11-28 10:33:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:29,718 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2018-11-28 10:33:29,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 10:33:29,718 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-11-28 10:33:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:29,718 INFO L225 Difference]: With dead ends: 88 [2018-11-28 10:33:29,718 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 10:33:29,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2018-11-28 10:33:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 10:33:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-28 10:33:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 10:33:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-28 10:33:29,727 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-11-28 10:33:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:29,727 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-28 10:33:29,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 10:33:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-28 10:33:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-28 10:33:29,728 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:29,728 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:29,728 INFO L423 AbstractCegarLoop]: === Iteration 16 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:29,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:29,729 INFO L82 PathProgramCache]: Analyzing trace with hash -734568865, now seen corresponding path program 3 times [2018-11-28 10:33:29,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:29,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:29,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:29,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:29,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:29,842 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:29,848 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 10:33:29,890 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-28 10:33:29,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:29,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:29,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-28 10:33:29,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 10:33:29,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 10:33:29,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-28 10:33:29,918 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 17 states. [2018-11-28 10:33:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:30,026 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-11-28 10:33:30,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 10:33:30,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2018-11-28 10:33:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:30,028 INFO L225 Difference]: With dead ends: 63 [2018-11-28 10:33:30,028 INFO L226 Difference]: Without dead ends: 62 [2018-11-28 10:33:30,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2018-11-28 10:33:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-28 10:33:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-28 10:33:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 10:33:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-11-28 10:33:30,036 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 48 [2018-11-28 10:33:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:30,036 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-11-28 10:33:30,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 10:33:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-11-28 10:33:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-28 10:33:30,037 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:30,038 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:30,038 INFO L423 AbstractCegarLoop]: === Iteration 17 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 10:33:30,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:30,038 INFO L82 PathProgramCache]: Analyzing trace with hash 323707371, now seen corresponding path program 4 times [2018-11-28 10:33:30,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:30,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:30,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:30,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:33:30,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:30,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:33:30,182 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:33:30,189 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 10:33:30,199 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 10:33:30,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:33:30,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 138 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-28 10:33:30,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:33:30,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 25 [2018-11-28 10:33:30,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-28 10:33:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-28 10:33:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2018-11-28 10:33:30,292 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2018-11-28 10:33:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:30,419 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-28 10:33:30,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 10:33:30,420 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-11-28 10:33:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:30,420 INFO L225 Difference]: With dead ends: 61 [2018-11-28 10:33:30,421 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 10:33:30,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2018-11-28 10:33:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 10:33:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 10:33:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 10:33:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 10:33:30,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-11-28 10:33:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:30,422 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:33:30,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-28 10:33:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:33:30,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 10:33:30,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 10:33:30,479 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,524 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,635 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,839 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,930 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,931 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:30,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 10:33:31,191 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 27 [2018-11-28 10:33:31,447 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 1 [2018-11-28 10:33:31,979 WARN L180 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 46 [2018-11-28 10:33:31,982 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 10:33:31,982 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|))) (let ((.cse3 (or (= 0 |f_#in~x|) .cse1 .cse2)) (.cse0 (< |f_#in~y| 0)) (.cse4 (< |f_#in~x| 1))) (and (or .cse0 .cse1 (< |f_#in~x| 0) (and (not (= 0 f_~y)) (<= f_~x 2147483648) (<= 0 f_~x) (not (= 0 f_~x)) (<= f_~y 2147483647) (<= 0 f_~y)) .cse2) (or .cse3 (<= f_~x f_~y) (< |f_#in~y| |f_#in~x|) .cse4) (let ((.cse5 (+ |f_#in~y| 1))) (or (< .cse5 0) (< |f_#in~x| .cse5) (= .cse5 0) .cse3 (<= (+ f_~y 1) f_~x))) (or .cse3 (<= f_~x 2147483647) .cse0 .cse4)))) [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L444 ceAbstractionStarter]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|)) (.cse0 (< |f_#in~y| 0))) (and (or (and (not (= 0 f_~y)) (<= 0 f_~x) (<= f_~x f_~y) (<= f_~y 2147483647)) .cse0 .cse1 (< |f_#in~x| 0) .cse2) (or (or .cse1 .cse2) .cse0 (< |f_#in~x| 1)))) [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 22) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 10:33:31,983 INFO L448 ceAbstractionStarter]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L451 ceAbstractionStarter]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 10:33:31,984 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 32) the Hoare annotation is: true [2018-11-28 10:33:31,984 INFO L444 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647) (<= 0 main_~y~0) (<= 0 main_~x~0)) [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 32) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2018-11-28 10:33:31,984 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 32) no Hoare annotation was computed. [2018-11-28 10:33:31,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:33:31 BoogieIcfgContainer [2018-11-28 10:33:31,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:33:31,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:33:31,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:33:31,989 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:33:31,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26" (3/4) ... [2018-11-28 10:33:31,993 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 10:33:32,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 10:33:32,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-28 10:33:32,003 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 10:33:32,007 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 10:33:32,007 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 10:33:32,007 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 10:33:32,043 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c3b1fc85-062b-4cb9-8438-710b67192701/bin-2019/uautomizer/witness.graphml [2018-11-28 10:33:32,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:33:32,044 INFO L168 Benchmark]: Toolchain (without parser) took 6020.72 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 234.9 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -155.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:32,044 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:32,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:32,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.41 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:32,045 INFO L168 Benchmark]: Boogie Preprocessor took 12.39 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:32,045 INFO L168 Benchmark]: RCFGBuilder took 189.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:32,046 INFO L168 Benchmark]: TraceAbstraction took 5618.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 300.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:32,046 INFO L168 Benchmark]: Witness Printer took 53.88 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 707.7 kB). Peak memory consumption was 707.7 kB. Max. memory is 11.5 GB. [2018-11-28 10:33:32,048 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.47 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.41 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.39 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 189.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5618.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.0 MB). Peak memory consumption was 300.8 MB. Max. memory is 11.5 GB. * Witness Printer took 53.88 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 707.7 kB). Peak memory consumption was 707.7 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 5.5s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 1.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 286 SDtfs, 549 SDslu, 1239 SDs, 0 SdLazy, 1399 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 604 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=16, 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, 17 MinimizatonAttempts, 146 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 190 HoareAnnotationTreeSize, 59 FomulaSimplifications, 532393 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45925 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 784 ConstructedInterpolants, 0 QuantifiedInterpolants, 104453 SizeOfPredicates, 50 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 130/1155 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...