./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3d221c588c349503d67f0a66f4914e82b09d7a1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:37,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:37,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:37,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:37,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:37,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:37,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:37,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:37,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:37,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:37,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:37,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:37,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:37,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:37,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:37,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:37,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:37,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:37,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:37,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:37,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:37,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:37,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:37,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:37,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:37,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:37,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:37,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:37,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:37,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:37,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:37,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:37,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:37,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:37,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:37,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:37,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:37,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:37,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:37,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:37,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:37,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:37,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:37,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:37,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:37,318 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:37,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:37,318 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:37,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:37,319 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:37,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:37,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:37,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:37,321 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:37,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:37,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:37,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:37,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:37,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:37,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:37,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:37,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:37,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:37,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:37,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:37,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:37,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:37,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:37,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:37,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:37,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:37,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:37,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:37,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:37,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:37,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:37,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:37,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:37,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:37,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:37,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:37,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:37,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3d221c588c349503d67f0a66f4914e82b09d7a1 [2020-11-28 07:42:37,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:37,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:37,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:37,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:37,627 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:37,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c [2020-11-28 07:42:37,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/data/aef5abb77/fadb9af82c0749688a69b8a4a6469d59/FLAG610543846 [2020-11-28 07:42:38,241 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:38,241 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/sv-benchmarks/c/eca-rers2012/Problem01_label58.c [2020-11-28 07:42:38,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/data/aef5abb77/fadb9af82c0749688a69b8a4a6469d59/FLAG610543846 [2020-11-28 07:42:38,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/data/aef5abb77/fadb9af82c0749688a69b8a4a6469d59 [2020-11-28 07:42:38,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:38,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:38,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:38,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:38,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:38,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:38" (1/1) ... [2020-11-28 07:42:38,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1494dc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:38, skipping insertion in model container [2020-11-28 07:42:38,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:38" (1/1) ... [2020-11-28 07:42:38,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:38,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:39,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:39,090 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:39,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:39,259 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:39,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39 WrapperNode [2020-11-28 07:42:39,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:39,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:39,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:39,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:39,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:39,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:39,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:39,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... [2020-11-28 07:42:39,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:39,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:39,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:39,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:39,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/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 [2020-11-28 07:42:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:39,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:42,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:42,228 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:42,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:42 BoogieIcfgContainer [2020-11-28 07:42:42,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:42,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:42,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:42,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:42,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:38" (1/3) ... [2020-11-28 07:42:42,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4d853e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:42, skipping insertion in model container [2020-11-28 07:42:42,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:39" (2/3) ... [2020-11-28 07:42:42,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4d853e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:42, skipping insertion in model container [2020-11-28 07:42:42,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:42" (3/3) ... [2020-11-28 07:42:42,238 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-11-28 07:42:42,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:42,253 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:42,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:42,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:42,287 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:42,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:42,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:42,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:42,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:42,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:42,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:42:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:42:42,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:42,315 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:42,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1520707181, now seen corresponding path program 1 times [2020-11-28 07:42:42,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:42,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234360599] [2020-11-28 07:42:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:42,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234360599] [2020-11-28 07:42:42,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:42,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:42,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346603233] [2020-11-28 07:42:42,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:42,841 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:42:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:43,549 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:42:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:43,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:42:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:43,569 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:42:43,569 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:42:43,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:42:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:42:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:42:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2020-11-28 07:42:43,647 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2020-11-28 07:42:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:43,649 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2020-11-28 07:42:43,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2020-11-28 07:42:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-28 07:42:43,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:43,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:43,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:43,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1350088767, now seen corresponding path program 1 times [2020-11-28 07:42:43,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:43,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754032042] [2020-11-28 07:42:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:43,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754032042] [2020-11-28 07:42:43,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:43,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:43,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656605621] [2020-11-28 07:42:43,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:43,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:43,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:43,750 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2020-11-28 07:42:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:44,289 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2020-11-28 07:42:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:44,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-11-28 07:42:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:44,292 INFO L225 Difference]: With dead ends: 433 [2020-11-28 07:42:44,292 INFO L226 Difference]: Without dead ends: 289 [2020-11-28 07:42:44,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-28 07:42:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-11-28 07:42:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:42:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2020-11-28 07:42:44,315 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2020-11-28 07:42:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:44,315 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2020-11-28 07:42:44,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2020-11-28 07:42:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 07:42:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:44,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:44,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:44,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1863731374, now seen corresponding path program 1 times [2020-11-28 07:42:44,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:44,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180288727] [2020-11-28 07:42:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:44,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180288727] [2020-11-28 07:42:44,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:44,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:44,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827278430] [2020-11-28 07:42:44,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:44,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:44,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:44,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:44,447 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2020-11-28 07:42:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:45,147 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2020-11-28 07:42:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:45,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-28 07:42:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:45,153 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:42:45,153 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:42:45,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:42:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-11-28 07:42:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-28 07:42:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1104 transitions. [2020-11-28 07:42:45,200 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1104 transitions. Word has length 83 [2020-11-28 07:42:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,200 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1104 transitions. [2020-11-28 07:42:45,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1104 transitions. [2020-11-28 07:42:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-28 07:42:45,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:45,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:45,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:45,216 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:45,218 INFO L82 PathProgramCache]: Analyzing trace with hash 228739624, now seen corresponding path program 1 times [2020-11-28 07:42:45,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:45,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737722277] [2020-11-28 07:42:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:45,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737722277] [2020-11-28 07:42:45,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:45,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389409865] [2020-11-28 07:42:45,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:45,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,308 INFO L87 Difference]: Start difference. First operand 713 states and 1104 transitions. Second operand 3 states. [2020-11-28 07:42:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:45,760 INFO L93 Difference]: Finished difference Result 1780 states and 2688 transitions. [2020-11-28 07:42:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:45,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-28 07:42:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:45,766 INFO L225 Difference]: With dead ends: 1780 [2020-11-28 07:42:45,766 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:42:45,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:42:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:42:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:42:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1359 transitions. [2020-11-28 07:42:45,801 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1359 transitions. Word has length 86 [2020-11-28 07:42:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,801 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1359 transitions. [2020-11-28 07:42:45,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1359 transitions. [2020-11-28 07:42:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-28 07:42:45,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:45,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:45,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:45,805 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash -222280676, now seen corresponding path program 1 times [2020-11-28 07:42:45,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:45,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91795469] [2020-11-28 07:42:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:42:45,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91795469] [2020-11-28 07:42:45,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:45,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:45,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212066384] [2020-11-28 07:42:45,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:45,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:45,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:45,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:45,896 INFO L87 Difference]: Start difference. First operand 926 states and 1359 transitions. Second operand 3 states. [2020-11-28 07:42:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:46,415 INFO L93 Difference]: Finished difference Result 2206 states and 3296 transitions. [2020-11-28 07:42:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:46,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-11-28 07:42:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:46,423 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:42:46,424 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:42:46,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:42:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-28 07:42:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:42:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1376 transitions. [2020-11-28 07:42:46,472 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1376 transitions. Word has length 87 [2020-11-28 07:42:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:46,473 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1376 transitions. [2020-11-28 07:42:46,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1376 transitions. [2020-11-28 07:42:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:42:46,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:46,480 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:46,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:46,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:46,483 INFO L82 PathProgramCache]: Analyzing trace with hash 843637590, now seen corresponding path program 1 times [2020-11-28 07:42:46,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:46,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058439852] [2020-11-28 07:42:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:42:46,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058439852] [2020-11-28 07:42:46,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:46,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933536440] [2020-11-28 07:42:46,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:46,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:46,592 INFO L87 Difference]: Start difference. First operand 1068 states and 1376 transitions. Second operand 4 states. [2020-11-28 07:42:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:47,249 INFO L93 Difference]: Finished difference Result 2206 states and 2837 transitions. [2020-11-28 07:42:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:47,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-11-28 07:42:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:47,260 INFO L225 Difference]: With dead ends: 2206 [2020-11-28 07:42:47,261 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:42:47,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:42:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-28 07:42:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:42:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1392 transitions. [2020-11-28 07:42:47,295 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1392 transitions. Word has length 91 [2020-11-28 07:42:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:47,296 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1392 transitions. [2020-11-28 07:42:47,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1392 transitions. [2020-11-28 07:42:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-28 07:42:47,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:47,305 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:47,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:47,305 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:47,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:47,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1911047738, now seen corresponding path program 1 times [2020-11-28 07:42:47,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:47,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536331437] [2020-11-28 07:42:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 07:42:47,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536331437] [2020-11-28 07:42:47,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:47,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:47,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816240337] [2020-11-28 07:42:47,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:47,479 INFO L87 Difference]: Start difference. First operand 1139 states and 1392 transitions. Second operand 4 states. [2020-11-28 07:42:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:48,048 INFO L93 Difference]: Finished difference Result 2277 states and 2783 transitions. [2020-11-28 07:42:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:48,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-11-28 07:42:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:48,055 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:48,055 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:42:48,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:42:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-28 07:42:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:42:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1371 transitions. [2020-11-28 07:42:48,085 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1371 transitions. Word has length 120 [2020-11-28 07:42:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:48,086 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1371 transitions. [2020-11-28 07:42:48,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1371 transitions. [2020-11-28 07:42:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-28 07:42:48,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:48,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:48,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:48,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:48,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:48,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1506069191, now seen corresponding path program 1 times [2020-11-28 07:42:48,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:48,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108405453] [2020-11-28 07:42:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:42:48,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108405453] [2020-11-28 07:42:48,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:48,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:48,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266406951] [2020-11-28 07:42:48,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:48,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:48,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:48,247 INFO L87 Difference]: Start difference. First operand 1139 states and 1371 transitions. Second operand 3 states. [2020-11-28 07:42:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:48,643 INFO L93 Difference]: Finished difference Result 2561 states and 3087 transitions. [2020-11-28 07:42:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:48,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-11-28 07:42:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:48,654 INFO L225 Difference]: With dead ends: 2561 [2020-11-28 07:42:48,654 INFO L226 Difference]: Without dead ends: 1423 [2020-11-28 07:42:48,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-11-28 07:42:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1210. [2020-11-28 07:42:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1458 transitions. [2020-11-28 07:42:48,686 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1458 transitions. Word has length 137 [2020-11-28 07:42:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:48,687 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1458 transitions. [2020-11-28 07:42:48,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1458 transitions. [2020-11-28 07:42:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-28 07:42:48,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:48,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:48,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:48,692 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash -759880016, now seen corresponding path program 1 times [2020-11-28 07:42:48,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:48,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606027501] [2020-11-28 07:42:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:42:48,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606027501] [2020-11-28 07:42:48,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:48,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:48,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331753670] [2020-11-28 07:42:48,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:48,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:48,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:48,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:48,859 INFO L87 Difference]: Start difference. First operand 1210 states and 1458 transitions. Second operand 3 states. [2020-11-28 07:42:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:49,241 INFO L93 Difference]: Finished difference Result 2632 states and 3147 transitions. [2020-11-28 07:42:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:49,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-11-28 07:42:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:49,249 INFO L225 Difference]: With dead ends: 2632 [2020-11-28 07:42:49,249 INFO L226 Difference]: Without dead ends: 1423 [2020-11-28 07:42:49,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-11-28 07:42:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1352. [2020-11-28 07:42:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-11-28 07:42:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1572 transitions. [2020-11-28 07:42:49,283 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1572 transitions. Word has length 164 [2020-11-28 07:42:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:49,284 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1572 transitions. [2020-11-28 07:42:49,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1572 transitions. [2020-11-28 07:42:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-28 07:42:49,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:49,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:49,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:49,290 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1924286121, now seen corresponding path program 1 times [2020-11-28 07:42:49,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:49,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532825827] [2020-11-28 07:42:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 134 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:42:49,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532825827] [2020-11-28 07:42:49,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111446195] [2020-11-28 07:42:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:49,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-28 07:42:49,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-28 07:42:49,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:49,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5] total 6 [2020-11-28 07:42:49,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696339826] [2020-11-28 07:42:49,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:49,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:49,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:49,992 INFO L87 Difference]: Start difference. First operand 1352 states and 1572 transitions. Second operand 3 states. [2020-11-28 07:42:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:50,552 INFO L93 Difference]: Finished difference Result 3200 states and 3769 transitions. [2020-11-28 07:42:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:50,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-11-28 07:42:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:50,563 INFO L225 Difference]: With dead ends: 3200 [2020-11-28 07:42:50,563 INFO L226 Difference]: Without dead ends: 1849 [2020-11-28 07:42:50,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-11-28 07:42:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 997. [2020-11-28 07:42:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:42:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1191 transitions. [2020-11-28 07:42:50,600 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1191 transitions. Word has length 177 [2020-11-28 07:42:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:50,601 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1191 transitions. [2020-11-28 07:42:50,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1191 transitions. [2020-11-28 07:42:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-28 07:42:50,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:50,606 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:50,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:42:50,820 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:50,821 INFO L82 PathProgramCache]: Analyzing trace with hash 575694551, now seen corresponding path program 1 times [2020-11-28 07:42:50,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:50,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56047918] [2020-11-28 07:42:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-28 07:42:51,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56047918] [2020-11-28 07:42:51,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924573184] [2020-11-28 07:42:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:51,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:51,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-28 07:42:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-11-28 07:42:51,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:51,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:42:51,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911019614] [2020-11-28 07:42:51,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:51,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:51,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:51,388 INFO L87 Difference]: Start difference. First operand 997 states and 1191 transitions. Second operand 3 states. [2020-11-28 07:42:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:51,809 INFO L93 Difference]: Finished difference Result 2277 states and 2763 transitions. [2020-11-28 07:42:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:51,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-11-28 07:42:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:51,817 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:51,817 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:42:51,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:42:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-11-28 07:42:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:42:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1479 transitions. [2020-11-28 07:42:51,855 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1479 transitions. Word has length 232 [2020-11-28 07:42:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:51,855 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1479 transitions. [2020-11-28 07:42:51,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1479 transitions. [2020-11-28 07:42:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-28 07:42:51,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:51,862 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:52,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:52,088 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:52,089 INFO L82 PathProgramCache]: Analyzing trace with hash -588459787, now seen corresponding path program 1 times [2020-11-28 07:42:52,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:52,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166594994] [2020-11-28 07:42:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 236 proven. 142 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:42:52,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166594994] [2020-11-28 07:42:52,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074735626] [2020-11-28 07:42:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:52,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:52,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-28 07:42:52,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-11-28 07:42:52,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:52,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-28 07:42:52,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562674079] [2020-11-28 07:42:52,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:52,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:52,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:52,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:52,810 INFO L87 Difference]: Start difference. First operand 1210 states and 1479 transitions. Second operand 3 states. [2020-11-28 07:42:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:53,154 INFO L93 Difference]: Finished difference Result 2701 states and 3315 transitions. [2020-11-28 07:42:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:53,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-11-28 07:42:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:53,155 INFO L225 Difference]: With dead ends: 2701 [2020-11-28 07:42:53,155 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:53,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 480 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:53,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-11-28 07:42:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:53,158 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:53,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:53,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:53,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 07:42:53,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:42:53,568 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:42:53,569 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:42:53,570 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:42:53,571 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:42:53,572 INFO L274 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-11-28 07:42:53,573 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:42:53,573 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6))) (or (and .cse0 (<= ~a8~0 13)) (<= ~a16~0 5) (and .cse0 (<= 15 ~a8~0)) (and (= ~a21~0 1) (= ~a20~0 1)))) [2020-11-28 07:42:53,573 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:42:53,573 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:42:53,573 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:42:53,574 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:42:53,575 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:42:53,576 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6))) (or (and .cse0 (<= ~a8~0 13)) (<= ~a16~0 5) (and .cse0 (<= 15 ~a8~0)) (and (= ~a21~0 1) (= ~a20~0 1)))) [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:42:53,577 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:42:53,578 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:42:53,578 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:42:53,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:53 BoogieIcfgContainer [2020-11-28 07:42:53,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:53,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:53,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:53,621 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:53,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:42" (3/4) ... [2020-11-28 07:42:53,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:53,660 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:42:53,662 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:42:53,663 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:42:53,665 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:42:53,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5c1b495-e7eb-4979-8b29-644568ac1b71/bin/utaipan/witness.graphml [2020-11-28 07:42:53,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:53,836 INFO L168 Benchmark]: Toolchain (without parser) took 15323.73 ms. Allocated memory was 88.1 MB in the beginning and 335.5 MB in the end (delta: 247.5 MB). Free memory was 51.9 MB in the beginning and 189.5 MB in the end (delta: -137.6 MB). Peak memory consumption was 109.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,837 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 116.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:53,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.85 ms. Allocated memory is still 88.1 MB. Free memory was 51.7 MB in the beginning and 49.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.22 ms. Allocated memory is still 88.1 MB. Free memory was 49.2 MB in the beginning and 43.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,838 INFO L168 Benchmark]: Boogie Preprocessor took 97.63 ms. Allocated memory is still 88.1 MB. Free memory was 43.5 MB in the beginning and 39.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,838 INFO L168 Benchmark]: RCFGBuilder took 2755.01 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 38.8 MB in the beginning and 61.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,839 INFO L168 Benchmark]: TraceAbstraction took 11387.77 ms. Allocated memory was 136.3 MB in the beginning and 335.5 MB in the end (delta: 199.2 MB). Free memory was 60.3 MB in the beginning and 205.2 MB in the end (delta: -144.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,839 INFO L168 Benchmark]: Witness Printer took 214.35 ms. Allocated memory is still 335.5 MB. Free memory was 204.2 MB in the beginning and 189.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:53,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 116.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 746.85 ms. Allocated memory is still 88.1 MB. Free memory was 51.7 MB in the beginning and 49.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.22 ms. Allocated memory is still 88.1 MB. Free memory was 49.2 MB in the beginning and 43.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.63 ms. Allocated memory is still 88.1 MB. Free memory was 43.5 MB in the beginning and 39.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2755.01 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 38.8 MB in the beginning and 61.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11387.77 ms. Allocated memory was 136.3 MB in the beginning and 335.5 MB in the end (delta: 199.2 MB). Free memory was 60.3 MB in the beginning and 205.2 MB in the end (delta: -144.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 16.1 GB. * Witness Printer took 214.35 ms. Allocated memory is still 335.5 MB. Free memory was 204.2 MB in the beginning and 189.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a16 == 6 && a8 <= 13) || a16 <= 5) || (a16 == 6 && 15 <= a8)) || (a21 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((a16 == 6 && a8 <= 13) || a16 <= 5) || (a16 == 6 && 15 <= a8)) || (a21 == 1 && a20 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 525 SDtfs, 908 SDslu, 56 SDs, 0 SdLazy, 2745 SolverSat, 702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1333 GetRequests, 1303 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1493 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3484 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 272 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2215 NumberOfCodeBlocks, 2215 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2847 ConstructedInterpolants, 0 QuantifiedInterpolants, 1693720 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1477 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 3203/3415 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...