./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI --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 d347897b483e2048bb7af7fe5bb03b68d0369bfa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:58,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:58,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:58,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:58,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:58,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:58,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:58,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:58,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:58,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:58,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:58,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:58,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:58,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:58,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:58,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:58,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:58,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:58,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:58,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:58,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:58,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:58,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:58,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:58,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:58,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:58,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:58,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:58,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:58,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:58,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:58,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:58,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:58,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:58,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:58,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:58,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:58,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:58,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:58,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:58,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:58,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:58,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:58,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:58,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:58,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:58,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:58,324 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:58,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:58,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:58,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:58,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:58,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:58,333 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:58,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:58,333 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:58,334 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:58,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:58,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:58,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:58,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:58,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:58,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:58,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:58,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:58,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:58,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:58,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:58,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:58,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:58,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:58,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:58,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:58,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:58,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:58,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:58,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:58,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:58,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:58,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:58,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:58,342 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_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d347897b483e2048bb7af7fe5bb03b68d0369bfa [2021-10-11 02:32:58,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:58,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:58,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:58,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:58,621 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:58,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2021-10-11 02:32:58,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/data/c718ba98b/7c5187275e3648c7b1f5b8e3f21484fa/FLAG44517e416 [2021-10-11 02:32:59,354 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:59,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2021-10-11 02:32:59,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/data/c718ba98b/7c5187275e3648c7b1f5b8e3f21484fa/FLAG44517e416 [2021-10-11 02:32:59,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/data/c718ba98b/7c5187275e3648c7b1f5b8e3f21484fa [2021-10-11 02:32:59,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:59,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:59,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:59,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:59,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:59,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e41f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59, skipping insertion in model container [2021-10-11 02:32:59,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:59,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:00,057 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2021-10-11 02:33:00,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:00,126 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:00,265 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2021-10-11 02:33:00,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:00,314 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:00,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00 WrapperNode [2021-10-11 02:33:00,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:00,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:00,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:00,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:00,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:00,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:00,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:00,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:00,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:00,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:00,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:00,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:00,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:33:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:33:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:02,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:02,734 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:33:02,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:02 BoogieIcfgContainer [2021-10-11 02:33:02,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:02,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:02,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:02,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:02,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:59" (1/3) ... [2021-10-11 02:33:02,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df91db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:02, skipping insertion in model container [2021-10-11 02:33:02,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00" (2/3) ... [2021-10-11 02:33:02,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df91db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:02, skipping insertion in model container [2021-10-11 02:33:02,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:02" (3/3) ... [2021-10-11 02:33:02,749 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2021-10-11 02:33:02,763 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:02,767 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:02,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:02,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:02,818 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:02,819 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:02,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:02,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:02,819 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:02,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:02,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:33:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:33:02,846 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:02,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:02,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 925943878, now seen corresponding path program 1 times [2021-10-11 02:33:02,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:02,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444459578] [2021-10-11 02:33:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:03,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444459578] [2021-10-11 02:33:03,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:03,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:03,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121139477] [2021-10-11 02:33:03,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:03,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:03,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:03,245 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:33:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:03,719 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:33:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:03,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:33:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:03,733 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:33:03,734 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:33:03,737 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 [2021-10-11 02:33:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:33:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:33:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:33:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-10-11 02:33:03,788 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-10-11 02:33:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:03,789 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-10-11 02:33:03,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-10-11 02:33:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 02:33:03,793 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:03,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:03,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:03,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash -859427809, now seen corresponding path program 1 times [2021-10-11 02:33:03,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:03,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080827598] [2021-10-11 02:33:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:03,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080827598] [2021-10-11 02:33:03,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:03,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:03,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505140008] [2021-10-11 02:33:03,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:03,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:03,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:03,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:03,957 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2021-10-11 02:33:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:04,383 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-10-11 02:33:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:04,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2021-10-11 02:33:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:04,386 INFO L225 Difference]: With dead ends: 405 [2021-10-11 02:33:04,386 INFO L226 Difference]: Without dead ends: 243 [2021-10-11 02:33:04,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-11 02:33:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-10-11 02:33:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2021-10-11 02:33:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-10-11 02:33:04,403 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-10-11 02:33:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:04,404 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-10-11 02:33:04,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-10-11 02:33:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:33:04,409 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:04,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:04,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:04,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1076296, now seen corresponding path program 1 times [2021-10-11 02:33:04,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:04,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58362396] [2021-10-11 02:33:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:04,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58362396] [2021-10-11 02:33:04,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:04,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:04,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182424913] [2021-10-11 02:33:04,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:04,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:04,532 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand 3 states. [2021-10-11 02:33:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:04,987 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-10-11 02:33:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:04,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:33:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:04,993 INFO L225 Difference]: With dead ends: 725 [2021-10-11 02:33:04,994 INFO L226 Difference]: Without dead ends: 483 [2021-10-11 02:33:04,995 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 [2021-10-11 02:33:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-11 02:33:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-11 02:33:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2021-10-11 02:33:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-10-11 02:33:05,023 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-10-11 02:33:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:05,023 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-10-11 02:33:05,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-10-11 02:33:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-11 02:33:05,031 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:05,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:05,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:33:05,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash 40617987, now seen corresponding path program 1 times [2021-10-11 02:33:05,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:05,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413947185] [2021-10-11 02:33:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:05,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413947185] [2021-10-11 02:33:05,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:05,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:05,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084089722] [2021-10-11 02:33:05,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:05,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:05,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:05,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:05,172 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand 3 states. [2021-10-11 02:33:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:05,604 INFO L93 Difference]: Finished difference Result 1125 states and 1634 transitions. [2021-10-11 02:33:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:05,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2021-10-11 02:33:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:05,609 INFO L225 Difference]: With dead ends: 1125 [2021-10-11 02:33:05,610 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:05,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 914 transitions. [2021-10-11 02:33:05,661 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 914 transitions. Word has length 110 [2021-10-11 02:33:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:05,663 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 914 transitions. [2021-10-11 02:33:05,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 914 transitions. [2021-10-11 02:33:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:33:05,675 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:05,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:05,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:33:05,681 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:05,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1911803283, now seen corresponding path program 1 times [2021-10-11 02:33:05,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:05,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735266513] [2021-10-11 02:33:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:33:05,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735266513] [2021-10-11 02:33:05,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:05,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:05,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491259366] [2021-10-11 02:33:05,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:05,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:05,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:05,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:05,746 INFO L87 Difference]: Start difference. First operand 643 states and 914 transitions. Second operand 3 states. [2021-10-11 02:33:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:05,942 INFO L93 Difference]: Finished difference Result 1285 states and 1827 transitions. [2021-10-11 02:33:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:05,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2021-10-11 02:33:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:05,947 INFO L225 Difference]: With dead ends: 1285 [2021-10-11 02:33:05,947 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:05,948 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 [2021-10-11 02:33:05,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 864 transitions. [2021-10-11 02:33:05,968 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 864 transitions. Word has length 113 [2021-10-11 02:33:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 864 transitions. [2021-10-11 02:33:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 864 transitions. [2021-10-11 02:33:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-11 02:33:05,971 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:05,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:05,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:33:05,972 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash -285715422, now seen corresponding path program 1 times [2021-10-11 02:33:05,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:05,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566749303] [2021-10-11 02:33:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-11 02:33:06,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566749303] [2021-10-11 02:33:06,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:06,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:06,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211598993] [2021-10-11 02:33:06,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:06,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:06,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:06,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,030 INFO L87 Difference]: Start difference. First operand 643 states and 864 transitions. Second operand 3 states. [2021-10-11 02:33:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:06,348 INFO L93 Difference]: Finished difference Result 1365 states and 1822 transitions. [2021-10-11 02:33:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:06,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2021-10-11 02:33:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:06,355 INFO L225 Difference]: With dead ends: 1365 [2021-10-11 02:33:06,355 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:06,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 753 transitions. [2021-10-11 02:33:06,374 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 753 transitions. Word has length 117 [2021-10-11 02:33:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:06,375 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 753 transitions. [2021-10-11 02:33:06,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 753 transitions. [2021-10-11 02:33:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-11 02:33:06,377 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:06,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:06,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:33:06,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1461746796, now seen corresponding path program 1 times [2021-10-11 02:33:06,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:06,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063020945] [2021-10-11 02:33:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:33:06,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063020945] [2021-10-11 02:33:06,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:06,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:06,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787987952] [2021-10-11 02:33:06,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:06,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,443 INFO L87 Difference]: Start difference. First operand 643 states and 753 transitions. Second operand 3 states. [2021-10-11 02:33:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:06,770 INFO L93 Difference]: Finished difference Result 1685 states and 1956 transitions. [2021-10-11 02:33:06,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:06,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2021-10-11 02:33:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:06,775 INFO L225 Difference]: With dead ends: 1685 [2021-10-11 02:33:06,775 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:06,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 726 transitions. [2021-10-11 02:33:06,796 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 726 transitions. Word has length 121 [2021-10-11 02:33:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:06,796 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 726 transitions. [2021-10-11 02:33:06,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 726 transitions. [2021-10-11 02:33:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:33:06,798 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:06,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:06,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:33:06,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:06,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1876369378, now seen corresponding path program 1 times [2021-10-11 02:33:06,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:06,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91490136] [2021-10-11 02:33:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91490136] [2021-10-11 02:33:06,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:06,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:06,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403728903] [2021-10-11 02:33:06,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:06,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:06,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:06,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,917 INFO L87 Difference]: Start difference. First operand 643 states and 726 transitions. Second operand 3 states. [2021-10-11 02:33:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:07,186 INFO L93 Difference]: Finished difference Result 1525 states and 1707 transitions. [2021-10-11 02:33:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:07,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:33:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:07,191 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:33:07,191 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:07,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 692 transitions. [2021-10-11 02:33:07,209 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 692 transitions. Word has length 133 [2021-10-11 02:33:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:07,209 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 692 transitions. [2021-10-11 02:33:07,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 692 transitions. [2021-10-11 02:33:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-11 02:33:07,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:07,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:07,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:33:07,214 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:07,215 INFO L82 PathProgramCache]: Analyzing trace with hash 433445851, now seen corresponding path program 1 times [2021-10-11 02:33:07,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:07,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359606733] [2021-10-11 02:33:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-10-11 02:33:07,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359606733] [2021-10-11 02:33:07,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:07,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:07,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645635572] [2021-10-11 02:33:07,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:07,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:07,442 INFO L87 Difference]: Start difference. First operand 643 states and 692 transitions. Second operand 3 states. [2021-10-11 02:33:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:07,558 INFO L93 Difference]: Finished difference Result 643 states and 692 transitions. [2021-10-11 02:33:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:07,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2021-10-11 02:33:07,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:07,560 INFO L225 Difference]: With dead ends: 643 [2021-10-11 02:33:07,560 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:33:07,561 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 [2021-10-11 02:33:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:33:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:33:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:33:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:33:07,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2021-10-11 02:33:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:07,563 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:33:07,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:33:07,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:33:07,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:33:07,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:33:07,777 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-10-11 02:33:07,932 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-10-11 02:33:07,935 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:33:07,935 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:33:07,935 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:33:07,935 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:33:07,936 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:33:07,936 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:33:07,943 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:33:07,943 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:33:07,943 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:33:07,943 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:33:07,944 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:33:07,944 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:33:07,944 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:33:07,944 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:33:07,944 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:33:07,945 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:33:07,945 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:33:07,946 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:33:07,946 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:33:07,946 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:33:07,946 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:33:07,947 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:33:07,948 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 473) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:33:07,949 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:33:07,950 INFO L262 CegarLoopResult]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:33:07,951 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:33:07,951 INFO L262 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2021-10-11 02:33:07,951 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:33:07,951 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:33:07,951 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:33:07,952 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (<= ~a28~0 10)) (.cse6 (= ~a11~0 1)) (.cse4 (<= ~a28~0 7)) (.cse5 (<= 9 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse3 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse1) (and .cse5 .cse6 .cse1 .cse2) (and (<= 8 ~a17~0) .cse1 .cse2) (and .cse6 .cse4 .cse1) (and .cse5 .cse0 .cse3 .cse1))) [2021-10-11 02:33:07,952 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:33:07,952 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:33:07,952 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:33:07,952 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:33:07,952 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:33:07,952 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:33:07,953 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:33:07,953 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:33:07,953 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:33:07,953 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:33:07,953 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:33:07,955 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (<= ~a28~0 10)) (.cse6 (= ~a11~0 1)) (.cse4 (<= ~a28~0 7)) (.cse5 (<= 9 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse3 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8))) (or (and .cse0 (<= 10 ~a28~0) .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse1) (and .cse5 .cse6 .cse1 .cse2) (and (<= 8 ~a17~0) .cse1 .cse2) (and .cse6 .cse4 .cse1) (and .cse5 .cse0 .cse3 .cse1))) [2021-10-11 02:33:07,955 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:33:07,955 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:33:07,955 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:33:07,955 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:33:07,955 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:33:07,956 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:33:07,957 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:33:07,957 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:33:07,957 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:33:07,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:07 BoogieIcfgContainer [2021-10-11 02:33:07,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:07,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:07,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:07,997 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:07,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:02" (3/4) ... [2021-10-11 02:33:08,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:33:08,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-11 02:33:08,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:33:08,040 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:33:08,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:33:08,195 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5eb09f-5ce7-42b5-a298-6fac67db9d84/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:08,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:08,197 INFO L168 Benchmark]: Toolchain (without parser) took 8625.05 ms. Allocated memory was 83.9 MB in the beginning and 218.1 MB in the end (delta: 134.2 MB). Free memory was 49.7 MB in the beginning and 112.2 MB in the end (delta: -62.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,198 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:08,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.39 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 49.5 MB in the beginning and 67.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.34 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 62.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,201 INFO L168 Benchmark]: Boogie Preprocessor took 101.68 ms. Allocated memory is still 107.0 MB. Free memory was 62.4 MB in the beginning and 57.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,201 INFO L168 Benchmark]: RCFGBuilder took 2217.40 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 57.7 MB in the beginning and 113.4 MB in the end (delta: -55.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,202 INFO L168 Benchmark]: TraceAbstraction took 5254.97 ms. Allocated memory was 148.9 MB in the beginning and 218.1 MB in the end (delta: 69.2 MB). Free memory was 113.4 MB in the beginning and 126.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 122.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,202 INFO L168 Benchmark]: Witness Printer took 199.01 ms. Allocated memory is still 218.1 MB. Free memory was 126.9 MB in the beginning and 112.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:08,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 740.39 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 49.5 MB in the beginning and 67.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.34 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 62.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.68 ms. Allocated memory is still 107.0 MB. Free memory was 62.4 MB in the beginning and 57.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2217.40 ms. Allocated memory was 107.0 MB in the beginning and 148.9 MB in the end (delta: 41.9 MB). Free memory was 57.7 MB in the beginning and 113.4 MB in the end (delta: -55.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5254.97 ms. Allocated memory was 148.9 MB in the beginning and 218.1 MB in the end (delta: 69.2 MB). Free memory was 113.4 MB in the beginning and 126.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 122.6 MB. Max. memory is 16.1 GB. * Witness Printer took 199.01 ms. Allocated memory is still 218.1 MB. Free memory was 126.9 MB in the beginning and 112.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 473]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a19 == 1) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((9 <= a28 && a19 == 1) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 432 SDslu, 38 SDs, 0 SdLazy, 1706 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 147 HoareAnnotationTreeSize, 3 FomulaSimplifications, 314 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1069 NumberOfCodeBlocks, 1069 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1060 ConstructedInterpolants, 0 QuantifiedInterpolants, 306672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 481/481 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...