./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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 05ff204c30e7b81bf33f8a8c483906be16c1e587 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:46:23,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:46:23,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:46:23,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:46:23,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:46:23,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:46:23,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:46:23,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:46:23,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:46:23,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:46:23,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:46:23,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:46:23,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:46:23,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:46:23,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:46:23,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:46:23,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:46:23,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:46:23,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:46:23,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:46:23,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:46:23,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:46:23,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:46:23,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:46:23,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:46:23,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:46:23,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:46:23,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:46:23,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:46:23,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:46:23,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:46:23,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:46:23,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:46:23,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:46:23,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:46:23,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:46:23,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:46:23,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:46:23,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:46:23,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:46:23,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:46:23,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:46:23,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:46:23,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:46:23,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:46:23,380 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:46:23,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:46:23,380 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:46:23,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:46:23,380 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:46:23,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:46:23,381 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:46:23,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:46:23,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:46:23,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:46:23,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:46:23,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:46:23,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:46:23,384 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_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05ff204c30e7b81bf33f8a8c483906be16c1e587 [2020-12-09 08:46:23,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:46:23,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:46:23,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:46:23,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:46:23,584 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:46:23,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/../../sv-benchmarks/c/loop-lit/gj2007.i [2020-12-09 08:46:23,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/data/a5fc68fee/691e623a95184b5e93a87e91fc0ff4db/FLAG3f1871de0 [2020-12-09 08:46:23,998 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:46:23,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/sv-benchmarks/c/loop-lit/gj2007.i [2020-12-09 08:46:24,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/data/a5fc68fee/691e623a95184b5e93a87e91fc0ff4db/FLAG3f1871de0 [2020-12-09 08:46:24,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/data/a5fc68fee/691e623a95184b5e93a87e91fc0ff4db [2020-12-09 08:46:24,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:46:24,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:46:24,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:24,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:46:24,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:46:24,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bd1471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24, skipping insertion in model container [2020-12-09 08:46:24,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:46:24,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:46:24,157 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2020-12-09 08:46:24,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:24,172 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:46:24,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2020-12-09 08:46:24,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:46:24,195 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:46:24,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24 WrapperNode [2020-12-09 08:46:24,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:46:24,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:24,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:46:24,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:46:24,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:46:24,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:46:24,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:46:24,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:46:24,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... [2020-12-09 08:46:24,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:46:24,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:46:24,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:46:24,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:46:24,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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 [2020-12-09 08:46:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:46:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:46:24,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:46:24,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:46:24,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:46:24,485 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 08:46:24,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:24 BoogieIcfgContainer [2020-12-09 08:46:24,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:46:24,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:46:24,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:46:24,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:46:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:46:24" (1/3) ... [2020-12-09 08:46:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463a1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:24, skipping insertion in model container [2020-12-09 08:46:24,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:46:24" (2/3) ... [2020-12-09 08:46:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463a1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:46:24, skipping insertion in model container [2020-12-09 08:46:24,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:24" (3/3) ... [2020-12-09 08:46:24,496 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.i [2020-12-09 08:46:24,509 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:46:24,512 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:46:24,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:46:24,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:46:24,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:46:24,544 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:46:24,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:46:24,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:46:24,544 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:46:24,544 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:46:24,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:46:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-12-09 08:46:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 08:46:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:24,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 08:46:24,561 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2035207, now seen corresponding path program 1 times [2020-12-09 08:46:24,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:24,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293144979] [2020-12-09 08:46:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293144979] [2020-12-09 08:46:24,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:46:24,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:46:24,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943367396] [2020-12-09 08:46:24,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:46:24,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:46:24,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:46:24,709 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-12-09 08:46:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:24,726 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-09 08:46:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:46:24,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 08:46:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:24,733 INFO L225 Difference]: With dead ends: 13 [2020-12-09 08:46:24,733 INFO L226 Difference]: Without dead ends: 6 [2020-12-09 08:46:24,735 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 [2020-12-09 08:46:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-12-09 08:46:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-12-09 08:46:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-12-09 08:46:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-12-09 08:46:24,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-12-09 08:46:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:24,757 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-12-09 08:46:24,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:46:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-12-09 08:46:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:46:24,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:24,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:46:24,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:46:24,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash 63166339, now seen corresponding path program 1 times [2020-12-09 08:46:24,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:24,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367384246] [2020-12-09 08:46:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367384246] [2020-12-09 08:46:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927461521] [2020-12-09 08:46:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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 [2020-12-09 08:46:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:24,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:46:24,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:24,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:24,898 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:46:24,898 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:46:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:24,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736017179] [2020-12-09 08:46:24,919 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:24,919 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:24,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:24,928 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:24,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:25,298 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:25,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:25,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:25,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-12-09 08:46:25,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136656865] [2020-12-09 08:46:25,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:46:25,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:25,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:46:25,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:46:25,445 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 7 states. [2020-12-09 08:46:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:25,457 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-12-09 08:46:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:46:25,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-12-09 08:46:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:25,457 INFO L225 Difference]: With dead ends: 12 [2020-12-09 08:46:25,458 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 08:46:25,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:46:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 08:46:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 08:46:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 08:46:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-09 08:46:25,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-12-09 08:46:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:25,460 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-09 08:46:25,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:46:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-09 08:46:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:46:25,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:25,461 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2020-12-09 08:46:25,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 08:46:25,663 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 667127047, now seen corresponding path program 2 times [2020-12-09 08:46:25,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:25,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154448020] [2020-12-09 08:46:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:25,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154448020] [2020-12-09 08:46:25,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039749963] [2020-12-09 08:46:25,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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 [2020-12-09 08:46:25,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-09 08:46:25,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:46:25,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 08:46:25,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:25,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:26,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1502097034] [2020-12-09 08:46:26,065 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:26,065 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:26,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:26,066 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:26,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:26,249 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:26,429 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:26,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:26,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-12-09 08:46:26,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5314501] [2020-12-09 08:46:26,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 08:46:26,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 08:46:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2020-12-09 08:46:26,434 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2020-12-09 08:46:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:26,456 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-12-09 08:46:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 08:46:26,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-12-09 08:46:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:26,457 INFO L225 Difference]: With dead ends: 18 [2020-12-09 08:46:26,457 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 08:46:26,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2020-12-09 08:46:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 08:46:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 08:46:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 08:46:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 08:46:26,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 08:46:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:26,460 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 08:46:26,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 08:46:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 08:46:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:46:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:26,460 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2020-12-09 08:46:26,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:26,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1497512839, now seen corresponding path program 3 times [2020-12-09 08:46:26,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:26,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809536162] [2020-12-09 08:46:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809536162] [2020-12-09 08:46:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991948917] [2020-12-09 08:46:26,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/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 [2020-12-09 08:46:26,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 08:46:26,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:46:26,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 08:46:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:26,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:27,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [746782733] [2020-12-09 08:46:27,151 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:27,151 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:27,151 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:27,152 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:27,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:27,286 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:27,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:27,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2020-12-09 08:46:27,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469327939] [2020-12-09 08:46:27,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-09 08:46:27,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-09 08:46:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2020-12-09 08:46:27,496 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 25 states. [2020-12-09 08:46:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:27,534 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2020-12-09 08:46:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-09 08:46:27,535 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 14 [2020-12-09 08:46:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:27,535 INFO L225 Difference]: With dead ends: 30 [2020-12-09 08:46:27,536 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 08:46:27,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2020-12-09 08:46:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 08:46:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 08:46:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 08:46:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-09 08:46:27,541 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2020-12-09 08:46:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:27,541 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-09 08:46:27,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-09 08:46:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-09 08:46:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 08:46:27,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:27,542 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2020-12-09 08:46:27,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:27,747 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 403765383, now seen corresponding path program 4 times [2020-12-09 08:46:27,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:27,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698489904] [2020-12-09 08:46:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698489904] [2020-12-09 08:46:28,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132860186] [2020-12-09 08:46:28,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:28,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 08:46:28,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:28,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:28,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [345218698] [2020-12-09 08:46:28,770 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:28,770 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:28,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:28,771 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:28,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:28,870 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:29,056 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:29,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:29,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2020-12-09 08:46:29,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100021883] [2020-12-09 08:46:29,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-09 08:46:29,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:29,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-09 08:46:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2020-12-09 08:46:29,060 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 49 states. [2020-12-09 08:46:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:29,130 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2020-12-09 08:46:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-09 08:46:29,131 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 26 [2020-12-09 08:46:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:29,132 INFO L225 Difference]: With dead ends: 54 [2020-12-09 08:46:29,132 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 08:46:29,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2020-12-09 08:46:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 08:46:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-09 08:46:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-09 08:46:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-12-09 08:46:29,138 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2020-12-09 08:46:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:29,138 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-12-09 08:46:29,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-09 08:46:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-12-09 08:46:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-09 08:46:29,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:29,140 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2020-12-09 08:46:29,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:29,341 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 726921863, now seen corresponding path program 5 times [2020-12-09 08:46:29,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:29,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461472480] [2020-12-09 08:46:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:30,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461472480] [2020-12-09 08:46:30,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276789344] [2020-12-09 08:46:30,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:30,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-12-09 08:46:30,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:46:30,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-09 08:46:30,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:30,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:32,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566553927] [2020-12-09 08:46:32,732 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:32,732 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:32,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:32,732 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:32,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:32,808 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:33,033 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:33,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:33,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2020-12-09 08:46:33,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191678605] [2020-12-09 08:46:33,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-12-09 08:46:33,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-12-09 08:46:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4665, Invalid=5235, Unknown=0, NotChecked=0, Total=9900 [2020-12-09 08:46:33,038 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 97 states. [2020-12-09 08:46:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:33,171 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2020-12-09 08:46:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-12-09 08:46:33,172 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 50 [2020-12-09 08:46:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:33,173 INFO L225 Difference]: With dead ends: 102 [2020-12-09 08:46:33,173 INFO L226 Difference]: Without dead ends: 99 [2020-12-09 08:46:33,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4665, Invalid=5235, Unknown=0, NotChecked=0, Total=9900 [2020-12-09 08:46:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-09 08:46:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-12-09 08:46:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-09 08:46:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2020-12-09 08:46:33,184 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2020-12-09 08:46:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:33,185 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2020-12-09 08:46:33,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-12-09 08:46:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2020-12-09 08:46:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 08:46:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:33,188 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2020-12-09 08:46:33,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:33,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:33,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1802495623, now seen corresponding path program 6 times [2020-12-09 08:46:33,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:33,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070777888] [2020-12-09 08:46:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:37,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070777888] [2020-12-09 08:46:37,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272381497] [2020-12-09 08:46:37,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:37,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 08:46:37,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:46:37,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 97 conjunts are in the unsatisfiable core [2020-12-09 08:46:37,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:37,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:46:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:44,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [440603051] [2020-12-09 08:46:44,909 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:46:44,910 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:46:44,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:46:44,910 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:46:44,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:46:44,978 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:46:45,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:46:45,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:46:45,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2020-12-09 08:46:45,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208880051] [2020-12-09 08:46:45,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 192 states [2020-12-09 08:46:45,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:46:45,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2020-12-09 08:46:45,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9875, Invalid=27955, Unknown=0, NotChecked=0, Total=37830 [2020-12-09 08:46:45,454 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 192 states. [2020-12-09 08:46:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:46:47,289 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2020-12-09 08:46:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-12-09 08:46:47,289 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 98 [2020-12-09 08:46:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:46:47,290 INFO L225 Difference]: With dead ends: 108 [2020-12-09 08:46:47,290 INFO L226 Difference]: Without dead ends: 105 [2020-12-09 08:46:47,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5480 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=9875, Invalid=27955, Unknown=0, NotChecked=0, Total=37830 [2020-12-09 08:46:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-09 08:46:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-09 08:46:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-09 08:46:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-12-09 08:46:47,300 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2020-12-09 08:46:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:46:47,301 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-12-09 08:46:47,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 192 states. [2020-12-09 08:46:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-12-09 08:46:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 08:46:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:46:47,302 INFO L422 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1] [2020-12-09 08:46:47,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-12-09 08:46:47,503 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:46:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:46:47,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1448774393, now seen corresponding path program 7 times [2020-12-09 08:46:47,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:46:47,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606044966] [2020-12-09 08:46:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:46:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:52,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606044966] [2020-12-09 08:46:52,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084996742] [2020-12-09 08:46:52,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:46:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:46:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 107 conjunts are in the unsatisfiable core [2020-12-09 08:46:52,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:46:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:46:57,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:47:00,315 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-09 08:47:00,751 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-12-09 08:47:01,209 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-12-09 08:47:01,729 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-12-09 08:47:02,335 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-12-09 08:47:02,983 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-12-09 08:47:03,657 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-12-09 08:47:04,307 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-12-09 08:47:05,007 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-12-09 08:47:05,728 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-12-09 08:47:06,486 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-12-09 08:47:07,356 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-12-09 08:47:08,201 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-12-09 08:47:09,113 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-12-09 08:47:10,085 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-12-09 08:47:11,146 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-12-09 08:47:12,195 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-12-09 08:47:13,340 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-12-09 08:47:14,485 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-12-09 08:47:15,727 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-12-09 08:47:16,925 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-12-09 08:47:18,162 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-12-09 08:47:19,556 WARN L197 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-12-09 08:47:20,907 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-12-09 08:47:22,362 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-12-09 08:47:23,840 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-12-09 08:47:25,400 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-12-09 08:47:26,872 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-12-09 08:47:28,458 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-12-09 08:47:30,070 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-12-09 08:47:31,778 WARN L197 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 407 [2020-12-09 08:47:33,488 WARN L197 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 417 [2020-12-09 08:47:35,194 WARN L197 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 427 [2020-12-09 08:47:37,082 WARN L197 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2020-12-09 08:47:39,149 WARN L197 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 447 [2020-12-09 08:47:41,152 WARN L197 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 457 [2020-12-09 08:47:43,077 WARN L197 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 467 [2020-12-09 08:47:45,178 WARN L197 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 477 [2020-12-09 08:47:47,270 WARN L197 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 487 [2020-12-09 08:47:49,354 WARN L197 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 496 [2020-12-09 08:47:51,632 WARN L197 SmtUtils]: Spent 946.00 ms on a formula simplification that was a NOOP. DAG size: 505 [2020-12-09 08:47:53,865 WARN L197 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 514 [2020-12-09 08:47:56,309 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 523 [2020-12-09 08:47:58,817 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 532 [2020-12-09 08:48:01,234 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 541 [2020-12-09 08:48:03,784 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 550 [2020-12-09 08:48:06,381 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 559 [2020-12-09 08:48:09,058 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 568 [2020-12-09 08:48:11,830 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 577 [2020-12-09 08:48:14,579 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 586 [2020-12-09 08:48:17,424 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 595 [2020-12-09 08:48:20,349 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 604 [2020-12-09 08:48:23,417 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 613 [2020-12-09 08:48:26,675 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 622 [2020-12-09 08:48:29,899 WARN L197 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 631 [2020-12-09 08:48:33,111 WARN L197 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 640 [2020-12-09 08:48:36,407 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 649 [2020-12-09 08:48:39,737 WARN L197 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 658 [2020-12-09 08:48:43,230 WARN L197 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 667 [2020-12-09 08:48:46,900 WARN L197 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 676 [2020-12-09 08:48:50,467 WARN L197 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 685 [2020-12-09 08:48:54,247 WARN L197 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 694 [2020-12-09 08:48:58,088 WARN L197 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 703 [2020-12-09 08:49:02,027 WARN L197 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 712 [2020-12-09 08:49:05,958 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 721 [2020-12-09 08:49:10,211 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 730 [2020-12-09 08:49:14,356 WARN L197 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 739 [2020-12-09 08:49:18,627 WARN L197 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 748 [2020-12-09 08:49:22,927 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 757 [2020-12-09 08:49:27,464 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 766 [2020-12-09 08:49:32,169 WARN L197 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 775 [2020-12-09 08:49:36,784 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 784 [2020-12-09 08:49:41,623 WARN L197 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 793 [2020-12-09 08:49:46,492 WARN L197 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 802 [2020-12-09 08:49:51,237 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 811 [2020-12-09 08:49:56,122 WARN L197 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 820 [2020-12-09 08:50:01,100 WARN L197 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 829 [2020-12-09 08:50:06,063 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 838 [2020-12-09 08:50:11,324 WARN L197 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 847 [2020-12-09 08:50:16,678 WARN L197 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 856 [2020-12-09 08:50:22,136 WARN L197 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 865 [2020-12-09 08:50:27,661 WARN L197 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 874 [2020-12-09 08:50:33,218 WARN L197 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 883 [2020-12-09 08:50:38,908 WARN L197 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 892 [2020-12-09 08:50:44,792 WARN L197 SmtUtils]: Spent 2.92 s on a formula simplification that was a NOOP. DAG size: 901 [2020-12-09 08:50:50,586 WARN L197 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 910 [2020-12-09 08:50:56,683 WARN L197 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 919 [2020-12-09 08:51:02,839 WARN L197 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 928 [2020-12-09 08:51:09,037 WARN L197 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 937 [2020-12-09 08:51:15,337 WARN L197 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 946 [2020-12-09 08:51:21,800 WARN L197 SmtUtils]: Spent 3.24 s on a formula simplification that was a NOOP. DAG size: 956 [2020-12-09 08:51:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:51:23,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947411442] [2020-12-09 08:51:23,703 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:51:23,703 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:51:23,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:51:23,703 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:51:23,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:51:23,814 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:51:25,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:51:25,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:51:25,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 254 [2020-12-09 08:51:25,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503351570] [2020-12-09 08:51:25,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 255 states [2020-12-09 08:51:25,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:51:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2020-12-09 08:51:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=717, Invalid=65589, Unknown=0, NotChecked=0, Total=66306 [2020-12-09 08:51:25,848 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 255 states. [2020-12-09 08:52:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:52:15,406 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2020-12-09 08:52:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-12-09 08:52:15,407 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 104 [2020-12-09 08:52:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:52:15,408 INFO L225 Difference]: With dead ends: 109 [2020-12-09 08:52:15,408 INFO L226 Difference]: Without dead ends: 106 [2020-12-09 08:52:15,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12029 ImplicationChecksByTransitivity, 264.3s TimeCoverageRelationStatistics Valid=722, Invalid=66100, Unknown=0, NotChecked=0, Total=66822 [2020-12-09 08:52:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-09 08:52:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-09 08:52:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 08:52:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2020-12-09 08:52:15,418 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2020-12-09 08:52:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:52:15,419 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2020-12-09 08:52:15,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 255 states. [2020-12-09 08:52:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2020-12-09 08:52:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 08:52:15,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:52:15,420 INFO L422 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1] [2020-12-09 08:52:15,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:52:15,620 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:52:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:52:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1962258301, now seen corresponding path program 8 times [2020-12-09 08:52:15,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:52:15,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147063262] [2020-12-09 08:52:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:52:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:52:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 1376 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:52:19,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147063262] [2020-12-09 08:52:19,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266635522] [2020-12-09 08:52:19,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:52:19,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2020-12-09 08:52:19,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 08:52:19,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 105 conjunts are in the unsatisfiable core [2020-12-09 08:52:19,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:52:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 101 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:52:24,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:52:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:52:32,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811832395] [2020-12-09 08:52:32,261 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-09 08:52:32,261 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:52:32,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:52:32,261 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:52:32,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:52:32,335 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:52:33,083 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:52:33,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:52:33,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 103] total 255 [2020-12-09 08:52:33,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57355510] [2020-12-09 08:52:33,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 256 states [2020-12-09 08:52:33,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:52:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2020-12-09 08:52:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17501, Invalid=49321, Unknown=0, NotChecked=0, Total=66822 [2020-12-09 08:52:33,088 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 256 states. [2020-12-09 08:52:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:52:35,571 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2020-12-09 08:52:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-12-09 08:52:35,571 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 105 [2020-12-09 08:52:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:52:35,572 INFO L225 Difference]: With dead ends: 106 [2020-12-09 08:52:35,572 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:52:35,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24838 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=17501, Invalid=49321, Unknown=0, NotChecked=0, Total=66822 [2020-12-09 08:52:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:52:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:52:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:52:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:52:35,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2020-12-09 08:52:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:52:35,575 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:52:35,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 256 states. [2020-12-09 08:52:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:52:35,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:52:35,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-12-09 08:52:35,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:52:35,890 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 555 [2020-12-09 08:52:38,828 WARN L197 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 555 DAG size of output: 508 [2020-12-09 08:52:38,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:52:38,833 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-09 08:52:38,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:52:38,836 INFO L258 CegarLoopResult]: At program point L28-2(lines 27 34) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 50)) (.cse1 (<= 50 ULTIMATE.start_main_~y~0))) (or (and (<= 74 ULTIMATE.start_main_~x~0) (<= 74 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 74) (<= ULTIMATE.start_main_~y~0 74)) (and (<= ULTIMATE.start_main_~x~0 24) .cse0 (<= 24 ULTIMATE.start_main_~x~0) .cse1) (and (<= 18 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 18) .cse1) (and .cse0 (<= 26 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 26) .cse1) (and (<= 33 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 33) .cse0 .cse1) (and (<= ULTIMATE.start_main_~y~0 82) (<= 82 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 82) (<= 82 ULTIMATE.start_main_~x~0)) (and (<= 96 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 96) (<= 96 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 96)) (and (<= 5 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 5) .cse1) (and .cse0 (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 1) .cse0 (<= 1 ULTIMATE.start_main_~x~0) .cse1) (and (<= 76 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 76) (<= 76 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 76)) (and .cse0 (<= ULTIMATE.start_main_~x~0 10) (<= 10 ULTIMATE.start_main_~x~0) .cse1) (and (<= 23 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 23) .cse0 .cse1) (and (<= ULTIMATE.start_main_~y~0 57) (<= 57 ULTIMATE.start_main_~y~0) (<= 57 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 57)) (and (<= 19 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 19) .cse1) (and (<= ULTIMATE.start_main_~x~0 80) (<= ULTIMATE.start_main_~y~0 80) (<= 80 ULTIMATE.start_main_~y~0) (<= 80 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 88) (<= 88 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 88) (<= 88 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 61) (<= ULTIMATE.start_main_~y~0 61) (<= 61 ULTIMATE.start_main_~x~0) (<= 61 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 89) (<= ULTIMATE.start_main_~x~0 89) (<= 89 ULTIMATE.start_main_~x~0) (<= 89 ULTIMATE.start_main_~y~0)) (and (<= 100 ULTIMATE.start_main_~x~0) (< 99 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 100) (<= ULTIMATE.start_main_~y~0 100)) (and .cse0 (<= 38 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 38) .cse1) (and (<= ULTIMATE.start_main_~x~0 30) .cse0 (<= 30 ULTIMATE.start_main_~x~0) .cse1) (and .cse0 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29) .cse1) (and (<= 41 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 41) .cse1) (and (<= 79 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 79) (<= ULTIMATE.start_main_~y~0 79) (<= 79 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 13) (<= 13 ULTIMATE.start_main_~x~0) .cse0 .cse1) (and (<= 77 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 77) (<= 77 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 77)) (and .cse0 (<= 43 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 43) .cse1) (and (<= ULTIMATE.start_main_~y~0 63) (<= 63 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 63) (<= 63 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 98) (<= 98 ULTIMATE.start_main_~y~0) (<= 98 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 98)) (and .cse0 (<= ULTIMATE.start_main_~x~0 7) (<= 7 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 15) .cse0 (<= 15 ULTIMATE.start_main_~x~0) .cse1) (and (<= 58 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 58) (<= 58 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 58)) (and (<= 44 ULTIMATE.start_main_~x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~x~0 44)) (and .cse0 (<= ULTIMATE.start_main_~x~0 37) (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and (<= 60 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 60) (<= ULTIMATE.start_main_~y~0 60) (<= 60 ULTIMATE.start_main_~x~0)) (and .cse0 (<= 45 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 45) .cse1) (and .cse0 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17) .cse1) (and (<= 2 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2) .cse0 .cse1) (and (<= ULTIMATE.start_main_~x~0 12) .cse0 (<= 12 ULTIMATE.start_main_~x~0) .cse1) (and .cse0 (<= 20 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 20) .cse1) (and (<= ULTIMATE.start_main_~x~0 54) (<= ULTIMATE.start_main_~y~0 54) (<= 54 ULTIMATE.start_main_~y~0) (<= 54 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 68) (<= ULTIMATE.start_main_~x~0 68) (<= 68 ULTIMATE.start_main_~y~0) (<= 68 ULTIMATE.start_main_~x~0)) (and (<= 21 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 21) .cse1) (and (<= ULTIMATE.start_main_~x~0 87) (<= 87 ULTIMATE.start_main_~y~0) (<= 87 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 87)) (and (<= 92 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 92) (<= ULTIMATE.start_main_~y~0 92) (<= 92 ULTIMATE.start_main_~x~0)) (and .cse0 (<= 3 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 3) .cse1) (and (<= ULTIMATE.start_main_~y~0 93) (<= 93 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 93) (<= 93 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 51) (<= 51 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 51) (<= 51 ULTIMATE.start_main_~x~0)) (and .cse0 (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0) .cse1) (and (<= 90 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 90) (<= 90 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 90)) (and (<= 16 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 16) .cse1) (and (<= 97 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 97) (<= 97 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 97)) (and .cse0 (= ULTIMATE.start_main_~x~0 0) .cse1) (and (<= ULTIMATE.start_main_~x~0 36) .cse0 (<= 36 ULTIMATE.start_main_~x~0) .cse1) (and (<= 95 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 95) (<= 95 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 95)) (and (<= ULTIMATE.start_main_~x~0 73) (<= 73 ULTIMATE.start_main_~x~0) (<= 73 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 73)) (and (<= 62 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 62) (<= 62 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 62)) (and (<= ULTIMATE.start_main_~x~0 40) .cse0 (<= 40 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~y~0 59) (<= ULTIMATE.start_main_~x~0 59) (<= 59 ULTIMATE.start_main_~x~0) (<= 59 ULTIMATE.start_main_~y~0)) (and (<= 39 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 39) .cse1) (and (<= ULTIMATE.start_main_~x~0 49) .cse0 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and .cse0 (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 31) .cse1) (and (<= ULTIMATE.start_main_~x~0 70) (<= 70 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 70) (<= 70 ULTIMATE.start_main_~y~0)) (and (<= 4 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 4) .cse1) (and (<= 46 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 46) .cse1) (and (<= ULTIMATE.start_main_~x~0 83) (<= ULTIMATE.start_main_~y~0 83) (<= 83 ULTIMATE.start_main_~y~0) (<= 83 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 71) (<= ULTIMATE.start_main_~x~0 71) (<= 71 ULTIMATE.start_main_~x~0) (<= 71 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~x~0 56) (<= ULTIMATE.start_main_~y~0 56) (<= 56 ULTIMATE.start_main_~y~0) (<= 56 ULTIMATE.start_main_~x~0)) (and (<= 65 ULTIMATE.start_main_~y~0) (<= 65 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 65) (<= ULTIMATE.start_main_~y~0 65)) (and (<= 67 ULTIMATE.start_main_~y~0) (<= 67 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 67) (<= ULTIMATE.start_main_~y~0 67)) (and (<= 47 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 47) .cse1) (and (<= 85 ULTIMATE.start_main_~x~0) (<= 85 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 85) (<= ULTIMATE.start_main_~x~0 85)) (and (<= ULTIMATE.start_main_~y~0 86) (<= ULTIMATE.start_main_~x~0 86) (<= 86 ULTIMATE.start_main_~x~0) (<= 86 ULTIMATE.start_main_~y~0)) (and (<= 75 ULTIMATE.start_main_~x~0) (<= 75 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 75) (<= ULTIMATE.start_main_~x~0 75)) (and (<= ULTIMATE.start_main_~y~0 64) (<= ULTIMATE.start_main_~x~0 64) (<= 64 ULTIMATE.start_main_~x~0) (<= 64 ULTIMATE.start_main_~y~0)) (and .cse0 (<= ULTIMATE.start_main_~x~0 42) (<= 42 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 48) .cse0 (<= 48 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 27) .cse0 (<= 27 ULTIMATE.start_main_~x~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~x~0 25) (<= 25 ULTIMATE.start_main_~x~0) .cse1) (and (<= 53 ULTIMATE.start_main_~x~0) (<= 53 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 53) (<= ULTIMATE.start_main_~x~0 53)) (and (<= ULTIMATE.start_main_~y~0 78) (<= ULTIMATE.start_main_~x~0 78) (<= 78 ULTIMATE.start_main_~y~0) (<= 78 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 34) .cse0 (<= 34 ULTIMATE.start_main_~x~0) .cse1) (and (<= 52 ULTIMATE.start_main_~x~0) (<= 52 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 52) (<= ULTIMATE.start_main_~x~0 52)) (and (<= 99 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 99) (<= ULTIMATE.start_main_~y~0 99) (<= 99 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 50) .cse0 (<= 50 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 32) (<= 32 ULTIMATE.start_main_~x~0) .cse0 .cse1) (and (<= 81 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 81) (<= ULTIMATE.start_main_~y~0 81) (<= 81 ULTIMATE.start_main_~x~0)) (and (<= 35 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 35) .cse1) (and (<= ULTIMATE.start_main_~x~0 69) (<= ULTIMATE.start_main_~y~0 69) (<= 69 ULTIMATE.start_main_~x~0) (<= 69 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~x~0 6) .cse0 (<= 6 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 8) .cse0 (<= 8 ULTIMATE.start_main_~x~0) .cse1) (and (<= 91 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 91) (<= ULTIMATE.start_main_~y~0 91) (<= 91 ULTIMATE.start_main_~y~0)) (and (<= 94 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 94) (<= ULTIMATE.start_main_~y~0 94) (<= 94 ULTIMATE.start_main_~y~0)) (and (<= 55 ULTIMATE.start_main_~y~0) (<= 55 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 55) (<= ULTIMATE.start_main_~y~0 55)) (and (<= 14 ULTIMATE.start_main_~x~0) .cse0 (<= ULTIMATE.start_main_~x~0 14) .cse1) (and (<= ULTIMATE.start_main_~y~0 72) (<= 72 ULTIMATE.start_main_~y~0) (<= 72 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 72)) (and .cse0 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22) .cse1) (and (<= ULTIMATE.start_main_~x~0 66) (<= 66 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 66) (<= 66 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~x~0 84) (<= 84 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 84) (<= 84 ULTIMATE.start_main_~x~0)) (and .cse0 (<= ULTIMATE.start_main_~x~0 28) (<= 28 ULTIMATE.start_main_~x~0) .cse1))) [2020-12-09 08:52:38,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-09 08:52:38,836 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-09 08:52:38,836 INFO L265 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-12-09 08:52:38,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:52:38 BoogieIcfgContainer [2020-12-09 08:52:38,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:52:38,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:52:38,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:52:38,875 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:52:38,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:46:24" (3/4) ... [2020-12-09 08:52:38,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:52:38,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 08:52:38,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 08:52:38,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 08:52:38,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:52:38,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9942a5cf-457a-412e-bc0c-53a4619e1cc0/bin/utaipan/witness.graphml [2020-12-09 08:52:38,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:52:38,907 INFO L168 Benchmark]: Toolchain (without parser) took 374888.91 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 76.1 MB in the beginning and 75.5 MB in the end (delta: 518.9 kB). Peak memory consumption was 112.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,907 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:52:38,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.69 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 66.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.11 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,907 INFO L168 Benchmark]: Boogie Preprocessor took 15.33 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:52:38,908 INFO L168 Benchmark]: RCFGBuilder took 252.58 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 69.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,908 INFO L168 Benchmark]: TraceAbstraction took 374385.52 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 69.0 MB in the beginning and 78.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,908 INFO L168 Benchmark]: Witness Printer took 31.21 ms. Allocated memory is still 209.7 MB. Free memory was 78.7 MB in the beginning and 75.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:52:38,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.69 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 66.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.11 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.33 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 252.58 ms. Allocated memory is still 98.6 MB. Free memory was 63.7 MB in the beginning and 69.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 374385.52 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 69.0 MB in the beginning and 78.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 155.2 MB. Max. memory is 16.1 GB. * Witness Printer took 31.21 ms. Allocated memory is still 209.7 MB. Free memory was 78.7 MB in the beginning and 75.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((74 <= x && 74 <= y) && x <= 74) && y <= 74) || (((x <= 24 && y <= 50) && 24 <= x) && 50 <= y)) || (((18 <= x && y <= 50) && x <= 18) && 50 <= y)) || (((y <= 50 && 26 <= x) && x <= 26) && 50 <= y)) || (((33 <= x && x <= 33) && y <= 50) && 50 <= y)) || (((y <= 82 && 82 <= y) && x <= 82) && 82 <= x)) || (((96 <= y && x <= 96) && 96 <= x) && y <= 96)) || (((5 <= x && y <= 50) && x <= 5) && 50 <= y)) || (((y <= 50 && x <= 9) && 9 <= x) && 50 <= y)) || (((x <= 1 && y <= 50) && 1 <= x) && 50 <= y)) || (((76 <= x && y <= 76) && 76 <= y) && x <= 76)) || (((y <= 50 && x <= 10) && 10 <= x) && 50 <= y)) || (((23 <= x && x <= 23) && y <= 50) && 50 <= y)) || (((y <= 57 && 57 <= y) && 57 <= x) && x <= 57)) || (((19 <= x && y <= 50) && x <= 19) && 50 <= y)) || (((x <= 80 && y <= 80) && 80 <= y) && 80 <= x)) || (((y <= 88 && 88 <= y) && x <= 88) && 88 <= x)) || (((x <= 61 && y <= 61) && 61 <= x) && 61 <= y)) || (((y <= 89 && x <= 89) && 89 <= x) && 89 <= y)) || (((100 <= x && 99 < y) && x <= 100) && y <= 100)) || (((y <= 50 && 38 <= x) && x <= 38) && 50 <= y)) || (((x <= 30 && y <= 50) && 30 <= x) && 50 <= y)) || (((y <= 50 && 29 <= x) && x <= 29) && 50 <= y)) || (((41 <= x && y <= 50) && x <= 41) && 50 <= y)) || (((79 <= y && x <= 79) && y <= 79) && 79 <= x)) || (((x <= 13 && 13 <= x) && y <= 50) && 50 <= y)) || (((77 <= y && x <= 77) && 77 <= x) && y <= 77)) || (((y <= 50 && 43 <= x) && x <= 43) && 50 <= y)) || (((y <= 63 && 63 <= x) && x <= 63) && 63 <= y)) || (((y <= 98 && 98 <= y) && 98 <= x) && x <= 98)) || (((y <= 50 && x <= 7) && 7 <= x) && 50 <= y)) || (((x <= 15 && y <= 50) && 15 <= x) && 50 <= y)) || (((58 <= y && y <= 58) && 58 <= x) && x <= 58)) || (((44 <= x && y <= 50) && 50 <= y) && x <= 44)) || (((y <= 50 && x <= 37) && 37 <= x) && 50 <= y)) || (((60 <= y && x <= 60) && y <= 60) && 60 <= x)) || (((y <= 50 && 45 <= x) && x <= 45) && 50 <= y)) || (((y <= 50 && 17 <= x) && x <= 17) && 50 <= y)) || (((2 <= x && x <= 2) && y <= 50) && 50 <= y)) || (((x <= 12 && y <= 50) && 12 <= x) && 50 <= y)) || (((y <= 50 && 20 <= x) && x <= 20) && 50 <= y)) || (((x <= 54 && y <= 54) && 54 <= y) && 54 <= x)) || (((y <= 68 && x <= 68) && 68 <= y) && 68 <= x)) || (((21 <= x && y <= 50) && x <= 21) && 50 <= y)) || (((x <= 87 && 87 <= y) && 87 <= x) && y <= 87)) || (((92 <= y && x <= 92) && y <= 92) && 92 <= x)) || (((y <= 50 && 3 <= x) && x <= 3) && 50 <= y)) || (((y <= 93 && 93 <= x) && x <= 93) && 93 <= y)) || (((y <= 51 && 51 <= y) && x <= 51) && 51 <= x)) || (((y <= 50 && x <= 11) && 11 <= x) && 50 <= y)) || (((90 <= x && x <= 90) && 90 <= y) && y <= 90)) || (((16 <= x && y <= 50) && x <= 16) && 50 <= y)) || (((97 <= x && y <= 97) && 97 <= y) && x <= 97)) || ((y <= 50 && x == 0) && 50 <= y)) || (((x <= 36 && y <= 50) && 36 <= x) && 50 <= y)) || (((95 <= x && y <= 95) && 95 <= y) && x <= 95)) || (((x <= 73 && 73 <= x) && 73 <= y) && y <= 73)) || (((62 <= x && x <= 62) && 62 <= y) && y <= 62)) || (((x <= 40 && y <= 50) && 40 <= x) && 50 <= y)) || (((y <= 59 && x <= 59) && 59 <= x) && 59 <= y)) || (((39 <= x && y <= 50) && x <= 39) && 50 <= y)) || (((x <= 49 && y <= 50) && 49 <= x) && 50 <= y)) || (((y <= 50 && 31 <= x) && x <= 31) && 50 <= y)) || (((x <= 70 && 70 <= x) && y <= 70) && 70 <= y)) || (((4 <= x && y <= 50) && x <= 4) && 50 <= y)) || (((46 <= x && y <= 50) && x <= 46) && 50 <= y)) || (((x <= 83 && y <= 83) && 83 <= y) && 83 <= x)) || (((y <= 71 && x <= 71) && 71 <= x) && 71 <= y)) || (((x <= 56 && y <= 56) && 56 <= y) && 56 <= x)) || (((65 <= y && 65 <= x) && x <= 65) && y <= 65)) || (((67 <= y && 67 <= x) && x <= 67) && y <= 67)) || (((47 <= x && y <= 50) && x <= 47) && 50 <= y)) || (((85 <= x && 85 <= y) && y <= 85) && x <= 85)) || (((y <= 86 && x <= 86) && 86 <= x) && 86 <= y)) || (((75 <= x && 75 <= y) && y <= 75) && x <= 75)) || (((y <= 64 && x <= 64) && 64 <= x) && 64 <= y)) || (((y <= 50 && x <= 42) && 42 <= x) && 50 <= y)) || (((x <= 48 && y <= 50) && 48 <= x) && 50 <= y)) || (((x <= 27 && y <= 50) && 27 <= x) && 50 <= y)) || (((y <= 50 && x <= 25) && 25 <= x) && 50 <= y)) || (((53 <= x && 53 <= y) && y <= 53) && x <= 53)) || (((y <= 78 && x <= 78) && 78 <= y) && 78 <= x)) || (((x <= 34 && y <= 50) && 34 <= x) && 50 <= y)) || (((52 <= x && 52 <= y) && y <= 52) && x <= 52)) || (((99 <= y && x <= 99) && y <= 99) && 99 <= x)) || (((x <= 50 && y <= 50) && 50 <= x) && 50 <= y)) || (((x <= 32 && 32 <= x) && y <= 50) && 50 <= y)) || (((81 <= y && x <= 81) && y <= 81) && 81 <= x)) || (((35 <= x && y <= 50) && x <= 35) && 50 <= y)) || (((x <= 69 && y <= 69) && 69 <= x) && 69 <= y)) || (((x <= 6 && y <= 50) && 6 <= x) && 50 <= y)) || (((x <= 8 && y <= 50) && 8 <= x) && 50 <= y)) || (((91 <= x && x <= 91) && y <= 91) && 91 <= y)) || (((94 <= x && x <= 94) && y <= 94) && 94 <= y)) || (((55 <= y && 55 <= x) && x <= 55) && y <= 55)) || (((14 <= x && y <= 50) && x <= 14) && 50 <= y)) || (((y <= 72 && 72 <= y) && 72 <= x) && x <= 72)) || (((y <= 50 && 22 <= x) && x <= 22) && 50 <= y)) || (((x <= 66 && 66 <= x) && y <= 66) && 66 <= y)) || (((x <= 84 && 84 <= y) && y <= 84) && 84 <= x)) || (((y <= 50 && x <= 28) && 28 <= x) && 50 <= y) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 371.2s, OverallIterations: 9, TraceHistogramMax: 101, AutomataDifference: 54.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 1 SDslu, 448 SDs, 0 SdLazy, 31300 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 699 SyntacticMatches, 8 SemanticMatches, 904 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43471 ImplicationChecksByTransitivity, 297.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 104 NumberOfFragments, 1312 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 279 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 308.7s InterpolantComputationTime, 824 NumberOfCodeBlocks, 824 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 1209 ConstructedInterpolants, 0 QuantifiedInterpolants, 9538780 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1052 ConjunctsInSsa, 402 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 1477/48198 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...