./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58249a19aaa2ca34edeb532954b326c7f760e66f ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58249a19aaa2ca34edeb532954b326c7f760e66f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:12:13,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:12:13,288 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:12:13,294 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:12:13,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:12:13,295 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:12:13,296 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:12:13,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:12:13,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:12:13,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:12:13,299 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:12:13,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:12:13,300 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:12:13,301 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:12:13,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:12:13,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:12:13,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:12:13,304 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:12:13,305 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:12:13,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:12:13,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:12:13,307 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:12:13,309 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:12:13,309 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:12:13,310 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:12:13,310 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:12:13,311 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:12:13,311 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:12:13,311 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:12:13,312 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:12:13,312 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:12:13,312 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:12:13,312 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:12:13,312 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:12:13,313 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:12:13,314 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:12:13,314 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 12:12:13,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:12:13,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:12:13,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:12:13,323 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:12:13,323 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:12:13,324 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 12:12:13,324 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:12:13,325 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:12:13,325 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:12:13,327 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:12:13,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:12:13,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:12:13,329 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 12:12:13,329 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan 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 -> Taipan 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 -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-11-23 12:12:13,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:12:13,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:12:13,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:12:13,368 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:12:13,368 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:12:13,369 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-11-23 12:12:13,407 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/b33fe7dc9/5ba25ad8d9b04943a91fe38f717e0a91/FLAGad1f75819 [2018-11-23 12:12:13,767 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:12:13,767 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-11-23 12:12:13,774 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/b33fe7dc9/5ba25ad8d9b04943a91fe38f717e0a91/FLAGad1f75819 [2018-11-23 12:12:13,784 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/b33fe7dc9/5ba25ad8d9b04943a91fe38f717e0a91 [2018-11-23 12:12:13,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:12:13,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:12:13,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:12:13,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:12:13,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:12:13,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:12:13" (1/1) ... [2018-11-23 12:12:13,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388bc786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:13, skipping insertion in model container [2018-11-23 12:12:13,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:12:13" (1/1) ... [2018-11-23 12:12:13,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:12:13,834 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:12:14,047 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:12:14,055 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:12:14,133 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:12:14,179 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:12:14,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14 WrapperNode [2018-11-23 12:12:14,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:12:14,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:12:14,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:12:14,180 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:12:14,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:12:14,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:12:14,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:12:14,206 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:12:14,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... [2018-11-23 12:12:14,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:12:14,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:12:14,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:12:14,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:12:14,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:12:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 12:12:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 12:12:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 12:12:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-23 12:12:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:12:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:12:14,262 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 12:12:14,451 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:12:14,451 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 12:12:14,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:12:14 BoogieIcfgContainer [2018-11-23 12:12:14,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:12:14,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:12:14,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:12:14,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:12:14,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:12:13" (1/3) ... [2018-11-23 12:12:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e15bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:12:14, skipping insertion in model container [2018-11-23 12:12:14,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:14" (2/3) ... [2018-11-23 12:12:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e15bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:12:14, skipping insertion in model container [2018-11-23 12:12:14,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:12:14" (3/3) ... [2018-11-23 12:12:14,456 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-11-23 12:12:14,474 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,474 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,474 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,474 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,475 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,475 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,475 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,475 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,475 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,476 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,477 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,478 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,478 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,478 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,478 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,479 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,479 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:14,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 12:12:14,483 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:12:14,488 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 12:12:14,500 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 12:12:14,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:12:14,520 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:12:14,520 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:12:14,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:12:14,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:12:14,520 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:12:14,520 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:12:14,520 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:12:14,526 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-23 12:12:14,566 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-23 12:12:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-23 12:12:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 12:12:14,574 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:14,575 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:14,577 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:14,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:14,580 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-23 12:12:14,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:12:14,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:14,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:14,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:14,620 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:12:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:14,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:14,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:12:14,768 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:12:14,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:12:14,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:12:14,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:12:14,786 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-23 12:12:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:14,874 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-11-23 12:12:14,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 12:12:14,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 12:12:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:14,887 INFO L225 Difference]: With dead ends: 1411 [2018-11-23 12:12:14,887 INFO L226 Difference]: Without dead ends: 322 [2018-11-23 12:12:14,889 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-11-23 12:12:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-11-23 12:12:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-11-23 12:12:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-11-23 12:12:14,930 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-11-23 12:12:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:14,931 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-11-23 12:12:14,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:12:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-11-23 12:12:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 12:12:14,932 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:14,932 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:14,932 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:14,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:14,932 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-11-23 12:12:14,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:12:14,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:14,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:14,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:14,937 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:12:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:14,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:14,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:12:14,995 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:12:14,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:12:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:12:14,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:12:14,997 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-11-23 12:12:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:15,032 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-11-23 12:12:15,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 12:12:15,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 12:12:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:15,035 INFO L225 Difference]: With dead ends: 411 [2018-11-23 12:12:15,035 INFO L226 Difference]: Without dead ends: 290 [2018-11-23 12:12:15,036 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-23 12:12:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-23 12:12:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-23 12:12:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-23 12:12:15,048 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-23 12:12:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:15,048 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-23 12:12:15,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:12:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-23 12:12:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 12:12:15,049 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:15,049 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:15,049 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:15,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:15,050 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-11-23 12:12:15,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:12:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:15,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:12:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:15,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:15,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 12:12:15,123 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:12:15,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 12:12:15,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 12:12:15,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:15,124 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-23 12:12:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:15,179 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-23 12:12:15,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:12:15,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 12:12:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:15,181 INFO L225 Difference]: With dead ends: 437 [2018-11-23 12:12:15,181 INFO L226 Difference]: Without dead ends: 309 [2018-11-23 12:12:15,181 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 12:12:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-11-23 12:12:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-11-23 12:12:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-11-23 12:12:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-11-23 12:12:15,191 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-11-23 12:12:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:15,191 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-11-23 12:12:15,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 12:12:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-11-23 12:12:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 12:12:15,192 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:15,192 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:15,192 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:15,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:15,192 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-11-23 12:12:15,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:12:15,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:15,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,195 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:12:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:15,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:15,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 12:12:15,266 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:12:15,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 12:12:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 12:12:15,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:15,267 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-11-23 12:12:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:15,342 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-11-23 12:12:15,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:12:15,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 12:12:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:15,343 INFO L225 Difference]: With dead ends: 456 [2018-11-23 12:12:15,343 INFO L226 Difference]: Without dead ends: 319 [2018-11-23 12:12:15,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 12:12:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-23 12:12:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-23 12:12:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 12:12:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-23 12:12:15,352 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-23 12:12:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:15,353 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-23 12:12:15,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 12:12:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-23 12:12:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 12:12:15,354 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:15,354 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:15,354 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:15,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-23 12:12:15,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:12:15,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:12:15,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:12:15,357 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:12:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:15,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:15,417 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 12:12:15,418 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-23 12:12:15,424 INFO L168 Benchmark]: Toolchain (without parser) took 1636.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 956.6 MB in the beginning and 982.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:15,425 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:12:15,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:15,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:12:15,426 INFO L168 Benchmark]: Boogie Preprocessor took 18.81 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:15,427 INFO L168 Benchmark]: RCFGBuilder took 226.77 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:15,427 INFO L168 Benchmark]: TraceAbstraction took 970.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.6 MB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:15,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 391.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.81 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.77 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 970.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 982.6 MB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 12:12:16,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:12:16,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:12:16,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:12:16,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:12:16,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:12:16,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:12:16,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:12:16,887 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:12:16,888 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:12:16,888 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:12:16,888 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:12:16,889 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:12:16,890 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:12:16,891 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:12:16,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:12:16,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:12:16,893 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:12:16,895 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:12:16,896 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:12:16,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:12:16,897 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:12:16,899 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:12:16,899 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:12:16,899 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:12:16,900 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:12:16,900 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:12:16,901 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:12:16,902 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:12:16,902 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:12:16,902 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:12:16,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:12:16,903 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:12:16,903 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:12:16,904 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:12:16,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:12:16,904 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 12:12:16,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:12:16,915 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:12:16,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:12:16,915 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:12:16,915 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:12:16,916 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:12:16,916 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:12:16,916 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:12:16,916 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:12:16,916 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:12:16,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:12:16,917 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 12:12:16,917 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 12:12:16,917 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:12:16,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:12:16,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:12:16,918 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:12:16,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:12:16,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:12:16,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 12:12:16,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:12:16,921 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 12:12:16,921 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 12:12:16,921 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_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan 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 -> Taipan 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 -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-11-23 12:12:16,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:12:16,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:12:16,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:12:16,963 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:12:16,963 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:12:16,964 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-11-23 12:12:17,008 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/d58bb3245/f942422ef1fb4f929c5252ef0878b6da/FLAG7e245324d [2018-11-23 12:12:17,438 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:12:17,439 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-11-23 12:12:17,446 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/d58bb3245/f942422ef1fb4f929c5252ef0878b6da/FLAG7e245324d [2018-11-23 12:12:17,455 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/data/d58bb3245/f942422ef1fb4f929c5252ef0878b6da [2018-11-23 12:12:17,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:12:17,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:12:17,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:12:17,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:12:17,460 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:12:17,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199d0ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17, skipping insertion in model container [2018-11-23 12:12:17,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:12:17,496 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:12:17,711 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:12:17,719 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:12:17,752 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:12:17,787 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:12:17,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17 WrapperNode [2018-11-23 12:12:17,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:12:17,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:12:17,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:12:17,788 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:12:17,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:12:17,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:12:17,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:12:17,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:12:17,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... [2018-11-23 12:12:17,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:12:17,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:12:17,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:12:17,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:12:17,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:12:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 12:12:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 12:12:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 12:12:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 12:12:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 12:12:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-23 12:12:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 12:12:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 12:12:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-23 12:12:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:12:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:12:17,914 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 12:12:18,099 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:12:18,099 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 12:12:18,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:12:18 BoogieIcfgContainer [2018-11-23 12:12:18,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:12:18,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:12:18,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:12:18,102 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:12:18,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:12:17" (1/3) ... [2018-11-23 12:12:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dad26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:12:18, skipping insertion in model container [2018-11-23 12:12:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:12:17" (2/3) ... [2018-11-23 12:12:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dad26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:12:18, skipping insertion in model container [2018-11-23 12:12:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:12:18" (3/3) ... [2018-11-23 12:12:18,104 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-11-23 12:12:18,126 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,127 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,131 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,131 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,131 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,131 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 12:12:18,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 12:12:18,136 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:12:18,141 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 12:12:18,150 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 12:12:18,164 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 12:12:18,164 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:12:18,164 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:12:18,164 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:12:18,165 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:12:18,165 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:12:18,165 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:12:18,165 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:12:18,165 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:12:18,170 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-23 12:12:18,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-23 12:12:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-23 12:12:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 12:12:18,219 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:18,220 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:18,222 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:18,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-23 12:12:18,231 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:18,231 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:18,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:18,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:18,412 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:12:18,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:18,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:12:18,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:12:18,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:12:18,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:12:18,429 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-23 12:12:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:18,539 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-11-23 12:12:18,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:12:18,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 12:12:18,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:18,555 INFO L225 Difference]: With dead ends: 1777 [2018-11-23 12:12:18,555 INFO L226 Difference]: Without dead ends: 499 [2018-11-23 12:12:18,557 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-23 12:12:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-11-23 12:12:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-11-23 12:12:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-11-23 12:12:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-11-23 12:12:18,602 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-11-23 12:12:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:18,602 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-11-23 12:12:18,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:12:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-11-23 12:12:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 12:12:18,604 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:18,604 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:18,604 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:18,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:18,604 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-11-23 12:12:18,605 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:18,605 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:18,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:18,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:18,696 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:12:18,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:18,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:12:18,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:12:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:12:18,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:12:18,701 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-11-23 12:12:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:18,767 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-11-23 12:12:18,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 12:12:18,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 12:12:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:18,770 INFO L225 Difference]: With dead ends: 464 [2018-11-23 12:12:18,770 INFO L226 Difference]: Without dead ends: 343 [2018-11-23 12:12:18,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-11-23 12:12:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-11-23 12:12:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 12:12:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-11-23 12:12:18,784 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-11-23 12:12:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:18,785 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-11-23 12:12:18,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:12:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-11-23 12:12:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 12:12:18,786 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:18,786 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:18,786 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:18,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-11-23 12:12:18,787 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:18,787 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:18,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:18,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:18,892 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:12:18,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:18,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:12:18,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:12:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:12:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:12:18,895 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-11-23 12:12:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:18,933 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-11-23 12:12:18,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 12:12:18,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 12:12:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:18,935 INFO L225 Difference]: With dead ends: 420 [2018-11-23 12:12:18,935 INFO L226 Difference]: Without dead ends: 290 [2018-11-23 12:12:18,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-23 12:12:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-23 12:12:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-23 12:12:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-23 12:12:18,943 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-23 12:12:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:18,944 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-23 12:12:18,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:12:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-23 12:12:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 12:12:18,945 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:18,945 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:18,945 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:18,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-11-23 12:12:18,946 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:18,946 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:18,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:19,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,061 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:12:19,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:19,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 12:12:19,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 12:12:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 12:12:19,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:19,067 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-23 12:12:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:19,145 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-23 12:12:19,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:12:19,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 12:12:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:19,146 INFO L225 Difference]: With dead ends: 437 [2018-11-23 12:12:19,146 INFO L226 Difference]: Without dead ends: 309 [2018-11-23 12:12:19,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 12:12:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-11-23 12:12:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-11-23 12:12:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-11-23 12:12:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-11-23 12:12:19,154 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-11-23 12:12:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:19,154 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-11-23 12:12:19,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 12:12:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-11-23 12:12:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 12:12:19,155 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:19,155 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:19,155 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:19,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-11-23 12:12:19,156 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:19,175 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 12:12:19,203 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 12:12:19,203 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:12:19,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,250 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:12:19,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:12:19,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 12:12:19,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 12:12:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 12:12:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:12:19,252 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-11-23 12:12:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:19,311 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-11-23 12:12:19,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:12:19,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 12:12:19,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:19,313 INFO L225 Difference]: With dead ends: 456 [2018-11-23 12:12:19,313 INFO L226 Difference]: Without dead ends: 319 [2018-11-23 12:12:19,313 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 12:12:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-23 12:12:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-23 12:12:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 12:12:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-23 12:12:19,319 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-23 12:12:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:19,320 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-23 12:12:19,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 12:12:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-23 12:12:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 12:12:19,321 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:19,321 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:19,321 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:19,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-23 12:12:19,322 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:19,322 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:19,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:12:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:19,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:19,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:12:19,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:19,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:19,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:12:19,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-23 12:12:19,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 12:12:19,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 12:12:19,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 12:12:19,652 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-11-23 12:12:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:20,068 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-11-23 12:12:20,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 12:12:20,069 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-11-23 12:12:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:20,071 INFO L225 Difference]: With dead ends: 760 [2018-11-23 12:12:20,071 INFO L226 Difference]: Without dead ends: 383 [2018-11-23 12:12:20,071 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2018-11-23 12:12:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-11-23 12:12:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-11-23 12:12:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-11-23 12:12:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-11-23 12:12:20,081 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-11-23 12:12:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:20,081 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-11-23 12:12:20,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 12:12:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-11-23 12:12:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 12:12:20,082 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:20,082 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:20,086 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:20,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-11-23 12:12:20,086 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:20,086 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:20,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:20,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:20,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:20,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:20,254 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:12:20,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:20,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:20,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:20,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:12:20,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-23 12:12:20,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 12:12:20,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 12:12:20,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 12:12:20,327 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-11-23 12:12:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:20,827 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-11-23 12:12:20,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 12:12:20,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-11-23 12:12:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:20,829 INFO L225 Difference]: With dead ends: 824 [2018-11-23 12:12:20,829 INFO L226 Difference]: Without dead ends: 447 [2018-11-23 12:12:20,830 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-11-23 12:12:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-11-23 12:12:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-11-23 12:12:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-23 12:12:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-23 12:12:20,838 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-11-23 12:12:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:20,838 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-23 12:12:20,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 12:12:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-23 12:12:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-23 12:12:20,839 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:20,839 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:20,840 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:20,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:20,840 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-11-23 12:12:20,840 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:20,840 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:20,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:20,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:12:20,953 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:12:21,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:21,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:12:21,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:12:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:12:21,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:12:21,208 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 12:12:21,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:12:21,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-11-23 12:12:21,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 12:12:21,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 12:12:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-23 12:12:21,261 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-11-23 12:12:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:22,368 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-11-23 12:12:22,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-23 12:12:22,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-11-23 12:12:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:22,371 INFO L225 Difference]: With dead ends: 1302 [2018-11-23 12:12:22,371 INFO L226 Difference]: Without dead ends: 643 [2018-11-23 12:12:22,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 12:12:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-11-23 12:12:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-11-23 12:12:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-23 12:12:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-23 12:12:22,377 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-11-23 12:12:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:22,377 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-23 12:12:22,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 12:12:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-23 12:12:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-23 12:12:22,378 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:22,378 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:22,378 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:22,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-11-23 12:12:22,379 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:22,379 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:22,418 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 12:12:22,486 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 12:12:22,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:12:22,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:22,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:22,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:22,989 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:12:23,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 12:12:23,036 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 12:12:23,036 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:12:23,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:23,050 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:23,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:12:23,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2018-11-23 12:12:23,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 12:12:23,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 12:12:23,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-11-23 12:12:23,100 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 25 states. [2018-11-23 12:12:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:24,868 INFO L93 Difference]: Finished difference Result 738 states and 1659 transitions. [2018-11-23 12:12:24,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-23 12:12:24,869 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-11-23 12:12:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:24,870 INFO L225 Difference]: With dead ends: 738 [2018-11-23 12:12:24,871 INFO L226 Difference]: Without dead ends: 607 [2018-11-23 12:12:24,871 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=385, Invalid=1685, Unknown=0, NotChecked=0, Total=2070 [2018-11-23 12:12:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-11-23 12:12:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2018-11-23 12:12:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2018-11-23 12:12:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1348 transitions. [2018-11-23 12:12:24,877 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1348 transitions. Word has length 57 [2018-11-23 12:12:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:24,878 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 1348 transitions. [2018-11-23 12:12:24,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 12:12:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1348 transitions. [2018-11-23 12:12:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-23 12:12:24,878 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:12:24,879 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:12:24,879 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:12:24,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:12:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1418711251, now seen corresponding path program 3 times [2018-11-23 12:12:24,879 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:12:24,879 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:12:24,907 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 12:12:25,136 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 12:12:25,136 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:12:25,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:25,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:25,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:12:25,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:12:25,528 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 12:12:25,579 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 12:12:25,579 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:12:25,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:12:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:25,588 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:12:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:12:25,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:12:25,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13] total 24 [2018-11-23 12:12:25,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-23 12:12:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-23 12:12:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2018-11-23 12:12:25,611 INFO L87 Difference]: Start difference. First operand 607 states and 1348 transitions. Second operand 24 states. [2018-11-23 12:12:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:12:25,854 INFO L93 Difference]: Finished difference Result 1055 states and 2012 transitions. [2018-11-23 12:12:25,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-23 12:12:25,855 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-11-23 12:12:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:12:25,855 INFO L225 Difference]: With dead ends: 1055 [2018-11-23 12:12:25,855 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 12:12:25,856 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2018-11-23 12:12:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 12:12:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 12:12:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 12:12:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 12:12:25,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-11-23 12:12:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:12:25,857 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:12:25,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-23 12:12:25,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 12:12:25,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 12:12:25,859 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 12:12:25,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:12:25 BasicIcfg [2018-11-23 12:12:25,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 12:12:25,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:12:25,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:12:25,861 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:12:25,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:12:18" (3/4) ... [2018-11-23 12:12:25,863 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 12:12:25,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-11-23 12:12:25,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-11-23 12:12:25,869 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 12:12:25,869 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 12:12:25,869 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 12:12:25,892 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_baba11fb-58bf-42fa-bd55-695200bf0a61/bin-2019/utaipan/witness.graphml [2018-11-23 12:12:25,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:12:25,893 INFO L168 Benchmark]: Toolchain (without parser) took 8435.90 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.7 MB). Free memory was 944.4 MB in the beginning and 1.0 GB in the end (delta: -58.3 MB). Peak memory consumption was 248.4 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,893 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:12:25,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.63 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 912.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 912.2 MB in the beginning and 1.1 GB in the end (delta: -213.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,894 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:12:25,894 INFO L168 Benchmark]: RCFGBuilder took 220.93 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: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,895 INFO L168 Benchmark]: TraceAbstraction took 7760.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 168.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.9 MB). Peak memory consumption was 251.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,895 INFO L168 Benchmark]: Witness Printer took 31.51 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:12:25,898 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.63 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 912.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 912.2 MB in the beginning and 1.1 GB in the end (delta: -213.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 220.93 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: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7760.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 168.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.9 MB). Peak memory consumption was 251.2 MB. Max. memory is 11.5 GB. * Witness Printer took 31.51 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. SAFE Result, 7.7s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 761 SDtfs, 2371 SDslu, 5291 SDs, 0 SdLazy, 1075 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1061 GetRequests, 884 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 374 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 256460 SizeOfPredicates, 112 NumberOfNonLiveVariables, 940 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 16/608 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...