./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/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 dd635190a9aa277670265f46b90ecce0c321a2a9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:22:25,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:22:25,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:22:25,068 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:22:25,068 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:22:25,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:22:25,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:22:25,071 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:22:25,072 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:22:25,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:22:25,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:22:25,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:22:25,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:22:25,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:22:25,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:22:25,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:22:25,077 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:22:25,078 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:22:25,079 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:22:25,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:22:25,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:22:25,082 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:22:25,083 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:22:25,084 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:22:25,084 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:22:25,084 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:22:25,085 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:22:25,086 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:22:25,086 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:22:25,087 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:22:25,087 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:22:25,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:22:25,088 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:22:25,088 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:22:25,088 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:22:25,089 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:22:25,089 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 15:22:25,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:22:25,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:22:25,099 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:22:25,099 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:22:25,100 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:22:25,100 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:22:25,100 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:22:25,100 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 15:22:25,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:22:25,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:22:25,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:22:25,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:22:25,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:22:25,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:22:25,103 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:22:25,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:22:25,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:22:25,103 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_cce794d1-3be0-4231-af28-f0765d361ffb/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 -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2018-11-23 15:22:25,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:22:25,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:22:25,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:22:25,139 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:22:25,139 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:22:25,140 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-23 15:22:25,177 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/data/9dcafa50b/02fdfd98f0864ea4a38db8202b6954e5/FLAGe6d592920 [2018-11-23 15:22:25,513 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:22:25,514 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-23 15:22:25,518 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/data/9dcafa50b/02fdfd98f0864ea4a38db8202b6954e5/FLAGe6d592920 [2018-11-23 15:22:25,940 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/data/9dcafa50b/02fdfd98f0864ea4a38db8202b6954e5 [2018-11-23 15:22:25,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:22:25,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:22:25,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:22:25,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:22:25,946 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:22:25,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:25" (1/1) ... [2018-11-23 15:22:25,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aefdeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:25, skipping insertion in model container [2018-11-23 15:22:25,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:25" (1/1) ... [2018-11-23 15:22:25,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:22:25,965 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:22:26,068 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:22:26,071 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:22:26,080 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:22:26,089 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:22:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26 WrapperNode [2018-11-23 15:22:26,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:22:26,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:22:26,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:22:26,090 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:22:26,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:22:26,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:22:26,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:22:26,101 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:22:26,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... [2018-11-23 15:22:26,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:22:26,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:22:26,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:22:26,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:22:26,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:22:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2018-11-23 15:22:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2018-11-23 15:22:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:22:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:22:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:22:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:22:26,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:22:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:22:26,294 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:22:26,294 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 15:22:26,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:26 BoogieIcfgContainer [2018-11-23 15:22:26,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:22:26,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:22:26,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:22:26,297 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:22:26,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:25" (1/3) ... [2018-11-23 15:22:26,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6274c410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:26, skipping insertion in model container [2018-11-23 15:22:26,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:26" (2/3) ... [2018-11-23 15:22:26,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6274c410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:26, skipping insertion in model container [2018-11-23 15:22:26,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:26" (3/3) ... [2018-11-23 15:22:26,300 INFO L112 eAbstractionObserver]: Analyzing ICFG TwoWay_true-termination_true-no-overflow.c [2018-11-23 15:22:26,306 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:22:26,311 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 15:22:26,320 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 15:22:26,337 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:22:26,337 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:22:26,337 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:22:26,337 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:22:26,337 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:22:26,337 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:22:26,337 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:22:26,337 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:22:26,337 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:22:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-23 15:22:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 15:22:26,351 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:26,351 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:26,352 INFO L423 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:26,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1810771843, now seen corresponding path program 1 times [2018-11-23 15:22:26,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:26,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:26,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:26,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:22:26,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:22:26,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 15:22:26,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 15:22:26,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 15:22:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 15:22:26,525 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2018-11-23 15:22:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:26,697 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-11-23 15:22:26,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 15:22:26,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-23 15:22:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:26,707 INFO L225 Difference]: With dead ends: 61 [2018-11-23 15:22:26,707 INFO L226 Difference]: Without dead ends: 55 [2018-11-23 15:22:26,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:22:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-23 15:22:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2018-11-23 15:22:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 15:22:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-23 15:22:26,740 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 12 [2018-11-23 15:22:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:26,741 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-23 15:22:26,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 15:22:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2018-11-23 15:22:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 15:22:26,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:26,742 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:26,742 INFO L423 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:26,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:26,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1810772035, now seen corresponding path program 1 times [2018-11-23 15:22:26,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:26,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:26,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:26,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:22:26,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:22:26,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:22:26,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:22:26,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:22:26,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:22:26,779 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 4 states. [2018-11-23 15:22:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:26,800 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-23 15:22:26,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:22:26,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-23 15:22:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:26,801 INFO L225 Difference]: With dead ends: 49 [2018-11-23 15:22:26,801 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 15:22:26,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:22:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 15:22:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 15:22:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 15:22:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-23 15:22:26,806 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2018-11-23 15:22:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:26,806 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-23 15:22:26,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:22:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-23 15:22:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 15:22:26,807 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:26,807 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:26,807 INFO L423 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:26,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash 299352326, now seen corresponding path program 1 times [2018-11-23 15:22:26,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:26,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:26,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:26,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:22:26,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:22:26,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 15:22:26,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:22:26,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:22:26,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:22:26,845 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 4 states. [2018-11-23 15:22:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:26,881 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-23 15:22:26,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:22:26,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-23 15:22:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:26,883 INFO L225 Difference]: With dead ends: 22 [2018-11-23 15:22:26,883 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 15:22:26,883 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:22:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 15:22:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 15:22:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 15:22:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 15:22:26,886 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2018-11-23 15:22:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:26,887 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 15:22:26,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:22:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 15:22:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 15:22:26,887 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:26,887 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:26,888 INFO L423 AbstractCegarLoop]: === Iteration 4 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:26,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash -968795783, now seen corresponding path program 1 times [2018-11-23 15:22:26,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:26,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:26,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:26,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:26,898 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:26,898 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:26,898 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:26,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:26,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:22:26,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:26,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-23 15:22:26,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 15:22:26,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 15:22:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:22:26,998 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2018-11-23 15:22:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:27,151 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 15:22:27,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 15:22:27,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-23 15:22:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:27,152 INFO L225 Difference]: With dead ends: 28 [2018-11-23 15:22:27,153 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 15:22:27,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-23 15:22:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 15:22:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-11-23 15:22:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 15:22:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-23 15:22:27,159 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2018-11-23 15:22:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:27,159 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-23 15:22:27,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 15:22:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-23 15:22:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 15:22:27,160 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:27,160 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:27,160 INFO L423 AbstractCegarLoop]: === Iteration 5 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:27,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash 32101853, now seen corresponding path program 1 times [2018-11-23 15:22:27,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:27,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:27,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,170 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:27,170 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:27,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:27,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:27,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:22:27,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:27,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-23 15:22:27,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 15:22:27,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 15:22:27,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:22:27,315 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-11-23 15:22:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:27,447 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-11-23 15:22:27,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 15:22:27,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-11-23 15:22:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:27,449 INFO L225 Difference]: With dead ends: 45 [2018-11-23 15:22:27,450 INFO L226 Difference]: Without dead ends: 37 [2018-11-23 15:22:27,450 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-11-23 15:22:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-23 15:22:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-23 15:22:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 15:22:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-23 15:22:27,456 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-11-23 15:22:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:27,456 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-23 15:22:27,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 15:22:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-23 15:22:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 15:22:27,457 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:27,457 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:27,457 INFO L423 AbstractCegarLoop]: === Iteration 6 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:27,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:27,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1082241716, now seen corresponding path program 1 times [2018-11-23 15:22:27,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:27,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,467 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:27,467 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:27,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:27,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:27,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 15:22:27,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:27,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-23 15:22:27,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 15:22:27,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 15:22:27,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-23 15:22:27,603 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 11 states. [2018-11-23 15:22:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:27,766 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-11-23 15:22:27,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 15:22:27,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-11-23 15:22:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:27,768 INFO L225 Difference]: With dead ends: 45 [2018-11-23 15:22:27,768 INFO L226 Difference]: Without dead ends: 44 [2018-11-23 15:22:27,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-11-23 15:22:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-23 15:22:27,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-23 15:22:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 15:22:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-23 15:22:27,774 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 31 [2018-11-23 15:22:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:27,775 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-23 15:22:27,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 15:22:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-23 15:22:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-23 15:22:27,776 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:27,776 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:27,777 INFO L423 AbstractCegarLoop]: === Iteration 7 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:27,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash 810245226, now seen corresponding path program 1 times [2018-11-23 15:22:27,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:27,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:27,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:27,786 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:27,786 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:27,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:27,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:22:27,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 15:22:27,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:27,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-23 15:22:27,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 15:22:27,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 15:22:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-11-23 15:22:27,947 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 16 states. [2018-11-23 15:22:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:28,134 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-23 15:22:28,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 15:22:28,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-11-23 15:22:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:28,135 INFO L225 Difference]: With dead ends: 44 [2018-11-23 15:22:28,135 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 15:22:28,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-11-23 15:22:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 15:22:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-23 15:22:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 15:22:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-11-23 15:22:28,140 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2018-11-23 15:22:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:28,140 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-11-23 15:22:28,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 15:22:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-11-23 15:22:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-23 15:22:28,141 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:28,142 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:28,142 INFO L423 AbstractCegarLoop]: === Iteration 8 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:28,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1894287219, now seen corresponding path program 2 times [2018-11-23 15:22:28,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:28,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:28,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:28,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:22:28,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:28,157 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:28,157 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:28,157 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:28,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:22:28,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:22:28,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:22:28,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 15:22:28,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:28,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-11-23 15:22:28,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-23 15:22:28,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-23 15:22:28,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-11-23 15:22:28,506 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 29 states. [2018-11-23 15:22:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:28,956 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2018-11-23 15:22:28,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 15:22:28,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2018-11-23 15:22:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:28,957 INFO L225 Difference]: With dead ends: 73 [2018-11-23 15:22:28,957 INFO L226 Difference]: Without dead ends: 72 [2018-11-23 15:22:28,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2018-11-23 15:22:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-23 15:22:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2018-11-23 15:22:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-23 15:22:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2018-11-23 15:22:28,965 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 54 [2018-11-23 15:22:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:28,966 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2018-11-23 15:22:28,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-23 15:22:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2018-11-23 15:22:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-23 15:22:28,967 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:28,967 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:28,967 INFO L423 AbstractCegarLoop]: === Iteration 9 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:28,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash -122263405, now seen corresponding path program 2 times [2018-11-23 15:22:28,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:28,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:28,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:28,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:22:28,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:28,976 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:28,976 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:28,976 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:28,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:22:28,994 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:22:28,994 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:22:28,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 15:22:29,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:29,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-11-23 15:22:29,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 15:22:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 15:22:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-11-23 15:22:29,103 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 15 states. [2018-11-23 15:22:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:29,249 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-11-23 15:22:29,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 15:22:29,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-23 15:22:29,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:29,251 INFO L225 Difference]: With dead ends: 62 [2018-11-23 15:22:29,251 INFO L226 Difference]: Without dead ends: 58 [2018-11-23 15:22:29,251 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2018-11-23 15:22:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-23 15:22:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-23 15:22:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-23 15:22:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2018-11-23 15:22:29,259 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 43 [2018-11-23 15:22:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:29,259 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2018-11-23 15:22:29,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 15:22:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2018-11-23 15:22:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-23 15:22:29,260 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:22:29,260 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:22:29,260 INFO L423 AbstractCegarLoop]: === Iteration 10 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 15:22:29,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:22:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash -36231486, now seen corresponding path program 3 times [2018-11-23 15:22:29,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:22:29,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:22:29,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:29,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:22:29,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:22:29,269 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:22:29,269 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:22:29,269 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:22:29,281 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 15:22:30,490 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 15:22:30,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:22:30,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:22:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-11-23 15:22:30,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:22:30,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-23 15:22:30,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 15:22:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 15:22:30,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-11-23 15:22:30,627 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 13 states. [2018-11-23 15:22:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:22:30,819 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2018-11-23 15:22:30,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 15:22:30,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-11-23 15:22:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:22:30,820 INFO L225 Difference]: With dead ends: 58 [2018-11-23 15:22:30,820 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:22:30,820 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2018-11-23 15:22:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:22:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:22:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:22:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:22:30,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2018-11-23 15:22:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:22:30,821 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:22:30,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 15:22:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:22:30,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:22:30,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:22:30,914 INFO L448 ceAbstractionStarter]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2018-11-23 15:22:30,914 INFO L448 ceAbstractionStarter]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2018-11-23 15:22:30,914 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2018-11-23 15:22:30,914 INFO L444 ceAbstractionStarter]: At program point L31-2(lines 31 35) the Hoare annotation is: (let ((.cse0 (< |twoWay_#in~terminate| 1))) (and (or .cse0 (< 2147483646 |twoWay_#in~n|) (and (<= 0 twoWay_~n) (<= twoWay_~n |twoWay_#in~n|))) (or (< 2147483647 |twoWay_#in~n|) (and (<= |twoWay_#in~n| twoWay_~n) (<= 1 twoWay_~terminate) (= |twoWay_#in~n| (+ twoWay_~m~0 1)) (<= twoWay_~n 2147483647)) .cse0))) [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 37) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L36-2(line 36) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2018-11-23 15:22:30,915 INFO L448 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L451 ceAbstractionStarter]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:22:30,916 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:22:30,916 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:22:30,916 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 main_~x~0)) [2018-11-23 15:22:30,917 INFO L448 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2018-11-23 15:22:30,917 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 40 50) the Hoare annotation is: true [2018-11-23 15:22:30,917 INFO L448 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2018-11-23 15:22:30,917 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 40 50) no Hoare annotation was computed. [2018-11-23 15:22:30,917 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2018-11-23 15:22:30,917 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 40 50) no Hoare annotation was computed. [2018-11-23 15:22:30,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:22:30 BoogieIcfgContainer [2018-11-23 15:22:30,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:22:30,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:22:30,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:22:30,920 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:22:30,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:26" (3/4) ... [2018-11-23 15:22:30,923 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:22:30,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2018-11-23 15:22:30,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:22:30,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:22:30,933 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 15:22:30,933 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 15:22:30,933 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:22:30,971 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cce794d1-3be0-4231-af28-f0765d361ffb/bin-2019/uautomizer/witness.graphml [2018-11-23 15:22:30,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:22:30,972 INFO L168 Benchmark]: Toolchain (without parser) took 5029.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 958.0 MB in the beginning and 788.9 MB in the end (delta: 169.1 MB). Peak memory consumption was 350.0 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,973 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:22:30,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.67 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.26 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,974 INFO L168 Benchmark]: Boogie Preprocessor took 11.31 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:22:30,974 INFO L168 Benchmark]: RCFGBuilder took 181.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,975 INFO L168 Benchmark]: TraceAbstraction took 4624.69 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 794.2 MB in the end (delta: 293.2 MB). Peak memory consumption was 371.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,975 INFO L168 Benchmark]: Witness Printer took 51.73 ms. Allocated memory is still 1.2 GB. Free memory was 794.2 MB in the beginning and 788.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:22:30,977 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.67 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.26 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.31 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4624.69 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 794.2 MB in the end (delta: 293.2 MB). Peak memory consumption was 371.3 MB. Max. memory is 11.5 GB. * Witness Printer took 51.73 ms. Allocated memory is still 1.2 GB. Free memory was 794.2 MB in the beginning and 788.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 6 error locations. SAFE Result, 4.5s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 163 SDtfs, 754 SDslu, 870 SDs, 0 SdLazy, 1333 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=8, 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, 10 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 21 NumberOfFragments, 53 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 291 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 281 ConstructedInterpolants, 9 QuantifiedInterpolants, 51246 SizeOfPredicates, 46 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 98/226 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...