./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 08:38:04,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 08:38:04,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 08:38:04,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 08:38:04,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 08:38:04,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 08:38:04,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 08:38:04,154 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 08:38:04,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 08:38:04,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 08:38:04,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 08:38:04,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 08:38:04,157 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 08:38:04,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 08:38:04,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 08:38:04,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 08:38:04,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 08:38:04,161 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 08:38:04,162 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 08:38:04,164 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 08:38:04,164 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 08:38:04,165 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 08:38:04,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 08:38:04,167 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 08:38:04,167 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 08:38:04,168 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 08:38:04,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 08:38:04,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 08:38:04,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 08:38:04,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 08:38:04,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 08:38:04,171 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 08:38:04,171 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 08:38:04,171 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 08:38:04,172 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 08:38:04,172 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 08:38:04,172 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 08:38:04,182 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 08:38:04,182 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 08:38:04,183 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 08:38:04,183 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 08:38:04,184 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 08:38:04,184 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 08:38:04,184 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 08:38:04,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 08:38:04,184 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 08:38:04,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 08:38:04,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 08:38:04,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 08:38:04,186 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 08:38:04,186 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 08:38:04,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 08:38:04,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 08:38:04,187 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_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2018-12-08 08:38:04,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 08:38:04,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 08:38:04,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 08:38:04,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 08:38:04,222 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 08:38:04,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-12-08 08:38:04,266 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/data/61be37c94/e554eef6d77349d6af9c7a6d34550848/FLAGdf00f8c9a [2018-12-08 08:38:04,724 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 08:38:04,724 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/sv-benchmarks/c/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-12-08 08:38:04,727 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/data/61be37c94/e554eef6d77349d6af9c7a6d34550848/FLAGdf00f8c9a [2018-12-08 08:38:04,735 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/data/61be37c94/e554eef6d77349d6af9c7a6d34550848 [2018-12-08 08:38:04,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 08:38:04,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 08:38:04,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 08:38:04,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 08:38:04,740 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 08:38:04,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe9828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04, skipping insertion in model container [2018-12-08 08:38:04,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 08:38:04,755 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 08:38:04,841 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:38:04,847 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 08:38:04,859 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:38:04,868 INFO L195 MainTranslator]: Completed translation [2018-12-08 08:38:04,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04 WrapperNode [2018-12-08 08:38:04,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 08:38:04,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 08:38:04,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 08:38:04,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 08:38:04,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 08:38:04,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 08:38:04,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 08:38:04,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 08:38:04,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... [2018-12-08 08:38:04,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 08:38:04,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 08:38:04,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 08:38:04,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 08:38:04,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 08:38:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 08:38:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 08:38:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 08:38:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 08:38:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 08:38:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 08:38:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 08:38:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 08:38:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-12-08 08:38:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-12-08 08:38:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 08:38:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-12-08 08:38:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-12-08 08:38:05,093 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 08:38:05,093 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-08 08:38:05,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:05 BoogieIcfgContainer [2018-12-08 08:38:05,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 08:38:05,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 08:38:05,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 08:38:05,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 08:38:05,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:38:04" (1/3) ... [2018-12-08 08:38:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2599830b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:05, skipping insertion in model container [2018-12-08 08:38:05,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:38:04" (2/3) ... [2018-12-08 08:38:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2599830b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:38:05, skipping insertion in model container [2018-12-08 08:38:05,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:05" (3/3) ... [2018-12-08 08:38:05,100 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum05_false-unreach-call_true-termination.i [2018-12-08 08:38:05,109 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 08:38:05,115 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 08:38:05,129 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 08:38:05,147 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 08:38:05,148 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 08:38:05,148 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 08:38:05,148 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 08:38:05,148 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 08:38:05,148 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 08:38:05,148 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 08:38:05,148 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 08:38:05,148 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 08:38:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-08 08:38:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-08 08:38:05,164 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,164 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,166 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,169 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2018-12-08 08:38:05,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,245 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-12-08 08:38:05,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:38:05,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-08 08:38:05,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:38:05,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 08:38:05,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 08:38:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 08:38:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 08:38:05,331 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-08 08:38:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,347 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-12-08 08:38:05,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 08:38:05,348 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-12-08 08:38:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,353 INFO L225 Difference]: With dead ends: 64 [2018-12-08 08:38:05,353 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 08:38:05,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 08:38:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 08:38:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-08 08:38:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-08 08:38:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-12-08 08:38:05,381 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2018-12-08 08:38:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,381 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-12-08 08:38:05,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 08:38:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-12-08 08:38:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-08 08:38:05,383 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,383 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,384 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,384 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2018-12-08 08:38:05,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,395 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:05,395 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:05,395 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-08 08:38:05,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:38:05,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 08:38:05,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 08:38:05,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 08:38:05,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:38:05,466 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2018-12-08 08:38:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,479 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2018-12-08 08:38:05,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 08:38:05,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-12-08 08:38:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,480 INFO L225 Difference]: With dead ends: 56 [2018-12-08 08:38:05,480 INFO L226 Difference]: Without dead ends: 34 [2018-12-08 08:38:05,481 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:38:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-08 08:38:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-08 08:38:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 08:38:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-08 08:38:05,486 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2018-12-08 08:38:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,486 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-08 08:38:05,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 08:38:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-08 08:38:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-08 08:38:05,487 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,487 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,488 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash 479004822, now seen corresponding path program 1 times [2018-12-08 08:38:05,488 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,499 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:05,499 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:05,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 08:38:05,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:38:05,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 08:38:05,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 08:38:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 08:38:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:38:05,544 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 3 states. [2018-12-08 08:38:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,553 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-12-08 08:38:05,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 08:38:05,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-12-08 08:38:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,555 INFO L225 Difference]: With dead ends: 57 [2018-12-08 08:38:05,555 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 08:38:05,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:38:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 08:38:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-12-08 08:38:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 08:38:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-08 08:38:05,561 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 39 [2018-12-08 08:38:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,561 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-08 08:38:05,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 08:38:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-08 08:38:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-08 08:38:05,562 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,562 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,562 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,562 INFO L82 PathProgramCache]: Analyzing trace with hash -22870507, now seen corresponding path program 1 times [2018-12-08 08:38:05,562 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 08:38:05,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:38:05,595 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-08 08:38:05,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:05,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-12-08 08:38:05,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:38:05,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:38:05,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:05,652 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-08 08:38:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,666 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-12-08 08:38:05,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 08:38:05,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-12-08 08:38:05,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,667 INFO L225 Difference]: With dead ends: 62 [2018-12-08 08:38:05,667 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 08:38:05,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 08:38:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-12-08 08:38:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-08 08:38:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2018-12-08 08:38:05,670 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 39 [2018-12-08 08:38:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,670 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-12-08 08:38:05,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:38:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2018-12-08 08:38:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-08 08:38:05,671 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,671 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,671 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,671 INFO L82 PathProgramCache]: Analyzing trace with hash 496221539, now seen corresponding path program 1 times [2018-12-08 08:38:05,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-08 08:38:05,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:38:05,693 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-12-08 08:38:05,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:05,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-12-08 08:38:05,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:38:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:38:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:05,758 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 5 states. [2018-12-08 08:38:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,784 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2018-12-08 08:38:05,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:38:05,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-12-08 08:38:05,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,785 INFO L225 Difference]: With dead ends: 68 [2018-12-08 08:38:05,785 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 08:38:05,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 08:38:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-08 08:38:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 08:38:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2018-12-08 08:38:05,789 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 48 [2018-12-08 08:38:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,789 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2018-12-08 08:38:05,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:38:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-12-08 08:38:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-08 08:38:05,790 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,790 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,790 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1681907214, now seen corresponding path program 1 times [2018-12-08 08:38:05,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,797 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:05,797 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:05,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:05,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-12-08 08:38:05,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:05,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-12-08 08:38:05,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:38:05,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:38:05,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:05,854 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2018-12-08 08:38:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,864 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2018-12-08 08:38:05,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:38:05,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-12-08 08:38:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,865 INFO L225 Difference]: With dead ends: 68 [2018-12-08 08:38:05,865 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 08:38:05,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 08:38:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-12-08 08:38:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 08:38:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-08 08:38:05,869 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 59 [2018-12-08 08:38:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,869 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-08 08:38:05,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:38:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-08 08:38:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-08 08:38:05,870 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,870 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,870 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,870 INFO L82 PathProgramCache]: Analyzing trace with hash 804630256, now seen corresponding path program 2 times [2018-12-08 08:38:05,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:05,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,880 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:05,880 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:05,880 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/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 [2018-12-08 08:38:05,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 08:38:05,913 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 08:38:05,913 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:05,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-12-08 08:38:05,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:05,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-08 08:38:05,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:38:05,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:38:05,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:05,951 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2018-12-08 08:38:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:05,964 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2018-12-08 08:38:05,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:38:05,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2018-12-08 08:38:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:05,965 INFO L225 Difference]: With dead ends: 70 [2018-12-08 08:38:05,966 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 08:38:05,966 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 08:38:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-12-08 08:38:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 08:38:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-12-08 08:38:05,970 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 61 [2018-12-08 08:38:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:05,971 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-12-08 08:38:05,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:38:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-12-08 08:38:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-12-08 08:38:05,972 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:05,972 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:05,972 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:05,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1929644946, now seen corresponding path program 3 times [2018-12-08 08:38:05,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:05,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:05,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:05,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:05,982 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:05,982 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:05,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:05,991 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 08:38:06,015 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-08 08:38:06,015 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-12-08 08:38:06,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-08 08:38:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:38:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:38:06,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:06,056 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2018-12-08 08:38:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,074 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2018-12-08 08:38:06,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:38:06,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2018-12-08 08:38:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,075 INFO L225 Difference]: With dead ends: 68 [2018-12-08 08:38:06,075 INFO L226 Difference]: Without dead ends: 45 [2018-12-08 08:38:06,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-08 08:38:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-08 08:38:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-08 08:38:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-08 08:38:06,081 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 63 [2018-12-08 08:38:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,082 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-08 08:38:06,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:38:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-08 08:38:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-12-08 08:38:06,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,083 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,083 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,083 INFO L82 PathProgramCache]: Analyzing trace with hash -575638740, now seen corresponding path program 4 times [2018-12-08 08:38:06,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:06,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,093 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,093 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,093 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,100 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 08:38:06,116 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 08:38:06,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-12-08 08:38:06,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-12-08 08:38:06,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 08:38:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 08:38:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:38:06,179 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2018-12-08 08:38:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,193 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-12-08 08:38:06,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 08:38:06,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2018-12-08 08:38:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,194 INFO L225 Difference]: With dead ends: 78 [2018-12-08 08:38:06,194 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 08:38:06,194 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:38:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 08:38:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-12-08 08:38:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-08 08:38:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-12-08 08:38:06,197 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 72 [2018-12-08 08:38:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,197 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-12-08 08:38:06,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 08:38:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-12-08 08:38:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-08 08:38:06,198 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,198 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,198 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,198 INFO L82 PathProgramCache]: Analyzing trace with hash -336825618, now seen corresponding path program 5 times [2018-12-08 08:38:06,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:06,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,204 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,205 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,205 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,210 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 08:38:06,248 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-12-08 08:38:06,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-12-08 08:38:06,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-12-08 08:38:06,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:38:06,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:38:06,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:06,272 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2018-12-08 08:38:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,283 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2018-12-08 08:38:06,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:38:06,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2018-12-08 08:38:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,283 INFO L225 Difference]: With dead ends: 77 [2018-12-08 08:38:06,283 INFO L226 Difference]: Without dead ends: 51 [2018-12-08 08:38:06,284 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-08 08:38:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-12-08 08:38:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-12-08 08:38:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2018-12-08 08:38:06,287 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 74 [2018-12-08 08:38:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,287 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2018-12-08 08:38:06,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:38:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2018-12-08 08:38:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-12-08 08:38:06,288 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,288 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,288 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1535873938, now seen corresponding path program 6 times [2018-12-08 08:38:06,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:06,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,295 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,295 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,295 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,301 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 08:38:06,361 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-12-08 08:38:06,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-12-08 08:38:06,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-12-08 08:38:06,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 08:38:06,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 08:38:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:06,391 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 4 states. [2018-12-08 08:38:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,400 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-12-08 08:38:06,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:38:06,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-12-08 08:38:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,401 INFO L225 Difference]: With dead ends: 76 [2018-12-08 08:38:06,401 INFO L226 Difference]: Without dead ends: 53 [2018-12-08 08:38:06,402 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 08:38:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-08 08:38:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-12-08 08:38:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-08 08:38:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-12-08 08:38:06,406 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 83 [2018-12-08 08:38:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,407 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-12-08 08:38:06,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 08:38:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-12-08 08:38:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-12-08 08:38:06,408 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,408 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,408 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2064866548, now seen corresponding path program 7 times [2018-12-08 08:38:06,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:06,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,417 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,418 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:38:06,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-12-08 08:38:06,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-12-08 08:38:06,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 08:38:06,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 08:38:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:38:06,494 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 7 states. [2018-12-08 08:38:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,515 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2018-12-08 08:38:06,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 08:38:06,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2018-12-08 08:38:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,516 INFO L225 Difference]: With dead ends: 89 [2018-12-08 08:38:06,516 INFO L226 Difference]: Without dead ends: 54 [2018-12-08 08:38:06,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:38:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-08 08:38:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-12-08 08:38:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-12-08 08:38:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2018-12-08 08:38:06,519 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 85 [2018-12-08 08:38:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,519 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2018-12-08 08:38:06,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 08:38:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2018-12-08 08:38:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-08 08:38:06,519 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,520 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,520 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash -998650230, now seen corresponding path program 8 times [2018-12-08 08:38:06,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:38:06,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,526 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,526 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,526 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,532 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 08:38:06,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 08:38:06,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-12-08 08:38:06,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-08 08:38:06,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:38:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:38:06,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:06,580 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 5 states. [2018-12-08 08:38:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:06,600 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2018-12-08 08:38:06,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:38:06,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2018-12-08 08:38:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:06,601 INFO L225 Difference]: With dead ends: 88 [2018-12-08 08:38:06,601 INFO L226 Difference]: Without dead ends: 57 [2018-12-08 08:38:06,601 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-12-08 08:38:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-12-08 08:38:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-08 08:38:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-12-08 08:38:06,604 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 87 [2018-12-08 08:38:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:06,605 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-12-08 08:38:06,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:38:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-12-08 08:38:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-12-08 08:38:06,605 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:06,605 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:06,606 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:06,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1679580114, now seen corresponding path program 9 times [2018-12-08 08:38:06,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:06,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:06,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:06,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:06,616 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:06,616 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:06,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:06,624 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 08:38:06,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-08 08:38:06,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:06,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-12-08 08:38:06,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:06,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-08 08:38:06,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:38:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:38:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:06,998 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2018-12-08 08:38:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:07,008 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2018-12-08 08:38:07,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:38:07,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-12-08 08:38:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:07,008 INFO L225 Difference]: With dead ends: 86 [2018-12-08 08:38:07,008 INFO L226 Difference]: Without dead ends: 60 [2018-12-08 08:38:07,009 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:38:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-08 08:38:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-12-08 08:38:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-08 08:38:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-12-08 08:38:07,011 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 96 [2018-12-08 08:38:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:07,012 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-12-08 08:38:07,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:38:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-12-08 08:38:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-12-08 08:38:07,012 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:07,012 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:07,012 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:07,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2078244212, now seen corresponding path program 10 times [2018-12-08 08:38:07,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:07,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:07,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:07,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:07,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:07,019 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:07,019 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:07,019 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:07,026 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 08:38:07,049 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 08:38:07,049 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:38:07,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:38:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-12-08 08:38:07,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-08 08:38:07,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-12-08 08:38:07,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 08:38:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 08:38:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:38:07,084 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2018-12-08 08:38:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:38:07,094 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-12-08 08:38:07,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 08:38:07,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-12-08 08:38:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:38:07,095 INFO L225 Difference]: With dead ends: 87 [2018-12-08 08:38:07,095 INFO L226 Difference]: Without dead ends: 61 [2018-12-08 08:38:07,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:38:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-08 08:38:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-12-08 08:38:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-12-08 08:38:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2018-12-08 08:38:07,097 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 98 [2018-12-08 08:38:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:38:07,097 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2018-12-08 08:38:07,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 08:38:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2018-12-08 08:38:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-12-08 08:38:07,098 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:38:07,098 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:38:07,098 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:38:07,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:38:07,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 11 times [2018-12-08 08:38:07,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:38:07,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:38:07,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:07,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:38:07,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:38:07,103 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-08 08:38:07,104 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-08 08:38:07,104 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-08 08:38:07,109 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 08:38:07,369 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-08 08:38:07,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-08 08:38:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:38:07,486 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 08:38:07,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:38:07 BoogieIcfgContainer [2018-12-08 08:38:07,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 08:38:07,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 08:38:07,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 08:38:07,526 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 08:38:07,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:38:05" (3/4) ... [2018-12-08 08:38:07,528 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 08:38:07,591 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ea1f8068-89d4-4975-952d-fff66208a167/bin-2019/uautomizer/witness.graphml [2018-12-08 08:38:07,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 08:38:07,592 INFO L168 Benchmark]: Toolchain (without parser) took 2855.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -89.1 MB). Peak memory consumption was 126.4 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,593 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:38:07,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.28 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.84 ms. Allocated memory is still 1.0 GB. Free memory was 946.3 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,594 INFO L168 Benchmark]: Boogie Preprocessor took 49.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,594 INFO L168 Benchmark]: RCFGBuilder took 161.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,594 INFO L168 Benchmark]: TraceAbstraction took 2431.66 ms. Allocated memory was 1.2 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 1.1 GB in the end (delta: 57.4 MB). Peak memory consumption was 135.5 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,595 INFO L168 Benchmark]: Witness Printer took 65.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2018-12-08 08:38:07,596 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.28 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 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 13.84 ms. Allocated memory is still 1.0 GB. Free memory was 946.3 MB in the beginning and 941.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 161.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2431.66 ms. Allocated memory was 1.2 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 1.1 GB in the end (delta: 57.4 MB). Peak memory consumption was 135.5 MB. Max. memory is 11.5 GB. * Witness Printer took 65.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={9:0}] [L32] CALL init_nondet(x) VAL [x={9:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={9:0}, x={9:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={9:0}, x={9:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={9:0}, x={9:0}] [L32] RET init_nondet(x) VAL [x={9:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={9:0}] [L38] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483643, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483643, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483643, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-4294967288, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2147483644, cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-2147483644, x={9:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-2147483644, temp=2147483647, x={9:0}] [L41] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483643, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483643, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483643, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-4294967288, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-2147483644, cnt=2, i=5, ret=-4294967288, x={9:0}, x={9:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-2147483644, ret=-2147483644, temp=2147483647, x={9:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L46] x[5 -1] = temp VAL [i=4, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L47] CALL, EXPR rangesum(x) VAL [x={9:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483645, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483645, x={9:0}, x={9:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483645, x={9:0}, x={9:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=0, x={9:0}, x={9:0}] [L17] i++ VAL [cnt=2, i=5, ret=0, x={9:0}, x={9:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=0, x={9:0}, x={9:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=0, cnt=2, i=5, ret=0, x={9:0}, x={9:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=0, ret=-2147483644, ret2=-2147483644, temp=2147483645, x={9:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=-2147483644, ret2=-2147483644, ret5=0, temp=2147483645, x={9:0}] [L50] __VERIFIER_error() VAL [i=4, ret=-2147483644, ret2=-2147483644, ret5=0, temp=2147483645, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. UNSAFE Result, 2.3s OverallTime, 16 OverallIterations, 15 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 539 SDtfs, 50 SDslu, 822 SDs, 0 SdLazy, 158 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 970 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=15, 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, 15 MinimizatonAttempts, 16 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1202 NumberOfCodeBlocks, 1054 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1048 ConstructedInterpolants, 0 QuantifiedInterpolants, 81768 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2648 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 2275/2350 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...