./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.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_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/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_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/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_9550d553-ab02-42b7-a71e-2e9ac45ca824/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 2a6f9dd10b9200c61377ed7a907ef50ee4969a78 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:26:40,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:40,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:40,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:40,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:40,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:40,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:40,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:40,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:40,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:40,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:40,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:40,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:40,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:40,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:40,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:40,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:40,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:40,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:40,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:40,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:40,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:40,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:40,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:40,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:40,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:40,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:40,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:40,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:40,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:40,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:40,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:40,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:40,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:40,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:40,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:40,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:40,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:40,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:40,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:40,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:40,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:40,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:40,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:40,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:40,405 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:40,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:40,405 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:40,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:40,406 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:40,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:40,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:40,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:40,406 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:40,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:40,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:40,407 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:40,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:40,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:40,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:40,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:40,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:40,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:40,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:40,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:40,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:40,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:40,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:40,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:40,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:40,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:40,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:40,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:40,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:40,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:40,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:40,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:40,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:40,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:40,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:40,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:40,413 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_9550d553-ab02-42b7-a71e-2e9ac45ca824/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a6f9dd10b9200c61377ed7a907ef50ee4969a78 [2021-10-11 02:26:40,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:40,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:40,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:40,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:40,708 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:40,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2021-10-11 02:26:40,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/data/7c7c4b5ec/8164c03da70e45f7bb85588886775b13/FLAGbaf07321d [2021-10-11 02:26:41,358 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:41,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2021-10-11 02:26:41,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/data/7c7c4b5ec/8164c03da70e45f7bb85588886775b13/FLAGbaf07321d [2021-10-11 02:26:41,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/data/7c7c4b5ec/8164c03da70e45f7bb85588886775b13 [2021-10-11 02:26:41,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:41,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:41,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:41,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:41,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:41,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:41" (1/1) ... [2021-10-11 02:26:41,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ed9280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:41, skipping insertion in model container [2021-10-11 02:26:41,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:41" (1/1) ... [2021-10-11 02:26:41,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:41,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:42,239 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_9550d553-ab02-42b7-a71e-2e9ac45ca824/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2021-10-11 02:26:42,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:42,281 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:42,423 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_9550d553-ab02-42b7-a71e-2e9ac45ca824/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2021-10-11 02:26:42,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:42,460 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:42,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42 WrapperNode [2021-10-11 02:26:42,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:42,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:42,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:42,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:42,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:42,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:42,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:42,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:42,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... [2021-10-11 02:26:42,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:42,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:42,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:42,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:42,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/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 02:26:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:45,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:45,005 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:26:45,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:45 BoogieIcfgContainer [2021-10-11 02:26:45,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:45,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:45,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:45,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:45,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:41" (1/3) ... [2021-10-11 02:26:45,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ea4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:45, skipping insertion in model container [2021-10-11 02:26:45,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:42" (2/3) ... [2021-10-11 02:26:45,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ea4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:45, skipping insertion in model container [2021-10-11 02:26:45,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:45" (3/3) ... [2021-10-11 02:26:45,021 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2021-10-11 02:26:45,038 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:45,042 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:45,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:45,093 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:45,095 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:45,096 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:45,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:45,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:45,096 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:45,096 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:45,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:26:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:26:45,126 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:45,127 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] [2021-10-11 02:26:45,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:45,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1806905432, now seen corresponding path program 1 times [2021-10-11 02:26:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:45,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179342197] [2021-10-11 02:26:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:45,649 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 02:26:45,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179342197] [2021-10-11 02:26:45,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:45,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:45,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414615249] [2021-10-11 02:26:45,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:45,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:45,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:45,678 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:26:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:46,265 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:26:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:46,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:26:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:46,296 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:26:46,297 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:26:46,302 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 02:26:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:26:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:26:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:26:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:26:46,386 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:26:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:46,387 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:26:46,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:26:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:26:46,390 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:46,390 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] [2021-10-11 02:26:46,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:46,391 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1694602814, now seen corresponding path program 1 times [2021-10-11 02:26:46,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:46,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359752039] [2021-10-11 02:26:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:46,479 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 02:26:46,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359752039] [2021-10-11 02:26:46,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:46,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:46,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603229767] [2021-10-11 02:26:46,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:46,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:46,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:46,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:46,486 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:26:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:46,908 INFO L93 Difference]: Finished difference Result 433 states and 775 transitions. [2021-10-11 02:26:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:46,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:26:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:46,917 INFO L225 Difference]: With dead ends: 433 [2021-10-11 02:26:46,917 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:26:46,919 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 02:26:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:26:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2021-10-11 02:26:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:26:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2021-10-11 02:26:46,965 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2021-10-11 02:26:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:46,966 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2021-10-11 02:26:46,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2021-10-11 02:26:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:26:46,974 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:46,974 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:26:46,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:46,974 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash 348748340, now seen corresponding path program 1 times [2021-10-11 02:26:46,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:46,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587819382] [2021-10-11 02:26:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:47,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587819382] [2021-10-11 02:26:47,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:47,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:47,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734851536] [2021-10-11 02:26:47,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:47,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:47,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:47,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:47,072 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand 3 states. [2021-10-11 02:26:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:47,515 INFO L93 Difference]: Finished difference Result 857 states and 1437 transitions. [2021-10-11 02:26:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:47,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:26:47,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:47,520 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:26:47,520 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:26:47,522 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 02:26:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:26:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:26:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:26:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 886 transitions. [2021-10-11 02:26:47,542 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 886 transitions. Word has length 80 [2021-10-11 02:26:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:47,543 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 886 transitions. [2021-10-11 02:26:47,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 886 transitions. [2021-10-11 02:26:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:26:47,545 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:47,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:47,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:47,546 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:47,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:47,546 INFO L82 PathProgramCache]: Analyzing trace with hash -143895987, now seen corresponding path program 1 times [2021-10-11 02:26:47,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:47,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664162465] [2021-10-11 02:26:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:47,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664162465] [2021-10-11 02:26:47,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:47,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:47,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450201543] [2021-10-11 02:26:47,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:47,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:47,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:47,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:47,630 INFO L87 Difference]: Start difference. First operand 571 states and 886 transitions. Second operand 4 states. [2021-10-11 02:26:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:48,335 INFO L93 Difference]: Finished difference Result 1425 states and 2187 transitions. [2021-10-11 02:26:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:48,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:26:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:48,340 INFO L225 Difference]: With dead ends: 1425 [2021-10-11 02:26:48,341 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:26:48,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:26:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:26:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:26:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1058 transitions. [2021-10-11 02:26:48,365 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1058 transitions. Word has length 83 [2021-10-11 02:26:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:48,365 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1058 transitions. [2021-10-11 02:26:48,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1058 transitions. [2021-10-11 02:26:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:26:48,368 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:48,368 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2021-10-11 02:26:48,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:48,368 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1756796036, now seen corresponding path program 1 times [2021-10-11 02:26:48,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:48,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85903292] [2021-10-11 02:26:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:48,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85903292] [2021-10-11 02:26:48,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:48,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:48,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009906875] [2021-10-11 02:26:48,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:48,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:48,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:48,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:48,428 INFO L87 Difference]: Start difference. First operand 713 states and 1058 transitions. Second operand 3 states. [2021-10-11 02:26:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:48,916 INFO L93 Difference]: Finished difference Result 1922 states and 2892 transitions. [2021-10-11 02:26:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:48,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:26:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:48,925 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:26:48,925 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:26:48,927 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 02:26:48,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:26:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:26:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:26:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1718 transitions. [2021-10-11 02:26:48,963 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1718 transitions. Word has length 84 [2021-10-11 02:26:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:48,963 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1718 transitions. [2021-10-11 02:26:48,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1718 transitions. [2021-10-11 02:26:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:26:48,967 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:48,967 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] [2021-10-11 02:26:48,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:48,967 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:48,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1140298203, now seen corresponding path program 1 times [2021-10-11 02:26:48,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:48,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83448338] [2021-10-11 02:26:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:49,033 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 02:26:49,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83448338] [2021-10-11 02:26:49,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:49,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812443390] [2021-10-11 02:26:49,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:49,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:49,035 INFO L87 Difference]: Start difference. First operand 1139 states and 1718 transitions. Second operand 3 states. [2021-10-11 02:26:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:49,407 INFO L93 Difference]: Finished difference Result 2419 states and 3607 transitions. [2021-10-11 02:26:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:49,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:26:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:49,421 INFO L225 Difference]: With dead ends: 2419 [2021-10-11 02:26:49,422 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:26:49,424 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 02:26:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:26:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:26:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:26:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1777 transitions. [2021-10-11 02:26:49,459 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1777 transitions. Word has length 86 [2021-10-11 02:26:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:49,461 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1777 transitions. [2021-10-11 02:26:49,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:49,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1777 transitions. [2021-10-11 02:26:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-11 02:26:49,463 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:49,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:49,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:49,464 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:49,465 INFO L82 PathProgramCache]: Analyzing trace with hash -886280169, now seen corresponding path program 1 times [2021-10-11 02:26:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:49,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064703538] [2021-10-11 02:26:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:26:49,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064703538] [2021-10-11 02:26:49,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:49,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:49,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395729205] [2021-10-11 02:26:49,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:49,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:49,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:49,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:49,564 INFO L87 Difference]: Start difference. First operand 1210 states and 1777 transitions. Second operand 3 states. [2021-10-11 02:26:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:49,942 INFO L93 Difference]: Finished difference Result 2632 states and 3857 transitions. [2021-10-11 02:26:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:49,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2021-10-11 02:26:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:49,950 INFO L225 Difference]: With dead ends: 2632 [2021-10-11 02:26:49,950 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:26:49,952 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 02:26:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:26:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2021-10-11 02:26:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:26:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1739 transitions. [2021-10-11 02:26:49,983 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1739 transitions. Word has length 87 [2021-10-11 02:26:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:49,984 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1739 transitions. [2021-10-11 02:26:49,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1739 transitions. [2021-10-11 02:26:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-11 02:26:49,986 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:49,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:49,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:49,987 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:49,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1043314323, now seen corresponding path program 1 times [2021-10-11 02:26:49,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:49,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683377672] [2021-10-11 02:26:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:50,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683377672] [2021-10-11 02:26:50,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:50,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:50,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583456257] [2021-10-11 02:26:50,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:50,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:50,047 INFO L87 Difference]: Start difference. First operand 1352 states and 1739 transitions. Second operand 4 states. [2021-10-11 02:26:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:50,556 INFO L93 Difference]: Finished difference Result 2703 states and 3477 transitions. [2021-10-11 02:26:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:50,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-10-11 02:26:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:50,564 INFO L225 Difference]: With dead ends: 2703 [2021-10-11 02:26:50,564 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:26:50,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:26:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2021-10-11 02:26:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:26:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1686 transitions. [2021-10-11 02:26:50,602 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1686 transitions. Word has length 90 [2021-10-11 02:26:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:50,602 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1686 transitions. [2021-10-11 02:26:50,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1686 transitions. [2021-10-11 02:26:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-11 02:26:50,605 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:50,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:50,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:50,605 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:50,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1202877934, now seen corresponding path program 1 times [2021-10-11 02:26:50,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:50,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117630974] [2021-10-11 02:26:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-11 02:26:50,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117630974] [2021-10-11 02:26:50,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:50,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:50,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791648558] [2021-10-11 02:26:50,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:50,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:50,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:50,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:50,769 INFO L87 Difference]: Start difference. First operand 1352 states and 1686 transitions. Second operand 3 states. [2021-10-11 02:26:51,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:51,111 INFO L93 Difference]: Finished difference Result 3129 states and 3900 transitions. [2021-10-11 02:26:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:51,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2021-10-11 02:26:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:51,121 INFO L225 Difference]: With dead ends: 3129 [2021-10-11 02:26:51,122 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:26:51,124 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 02:26:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:26:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1352. [2021-10-11 02:26:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:26:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1662 transitions. [2021-10-11 02:26:51,183 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1662 transitions. Word has length 108 [2021-10-11 02:26:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:51,184 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1662 transitions. [2021-10-11 02:26:51,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1662 transitions. [2021-10-11 02:26:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-11 02:26:51,190 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:51,190 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:51,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:51,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:51,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1080125001, now seen corresponding path program 1 times [2021-10-11 02:26:51,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:51,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426116011] [2021-10-11 02:26:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:26:51,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426116011] [2021-10-11 02:26:51,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:51,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:51,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953656337] [2021-10-11 02:26:51,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:51,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:51,317 INFO L87 Difference]: Start difference. First operand 1352 states and 1662 transitions. Second operand 3 states. [2021-10-11 02:26:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:51,670 INFO L93 Difference]: Finished difference Result 3058 states and 3766 transitions. [2021-10-11 02:26:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:51,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2021-10-11 02:26:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:51,680 INFO L225 Difference]: With dead ends: 3058 [2021-10-11 02:26:51,680 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:26:51,682 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 02:26:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:26:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 997. [2021-10-11 02:26:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:26:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1238 transitions. [2021-10-11 02:26:51,719 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1238 transitions. Word has length 176 [2021-10-11 02:26:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:51,719 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1238 transitions. [2021-10-11 02:26:51,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1238 transitions. [2021-10-11 02:26:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-10-11 02:26:51,723 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:51,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:51,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:51,724 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:51,725 INFO L82 PathProgramCache]: Analyzing trace with hash -27485095, now seen corresponding path program 1 times [2021-10-11 02:26:51,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:51,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166417862] [2021-10-11 02:26:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-11 02:26:51,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166417862] [2021-10-11 02:26:51,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:51,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:26:51,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525341927] [2021-10-11 02:26:51,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:51,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:51,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:51,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:51,978 INFO L87 Difference]: Start difference. First operand 997 states and 1238 transitions. Second operand 5 states. [2021-10-11 02:26:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:52,461 INFO L93 Difference]: Finished difference Result 2164 states and 2657 transitions. [2021-10-11 02:26:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:52,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2021-10-11 02:26:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:52,468 INFO L225 Difference]: With dead ends: 2164 [2021-10-11 02:26:52,468 INFO L226 Difference]: Without dead ends: 1168 [2021-10-11 02:26:52,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-11 02:26:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1068. [2021-10-11 02:26:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1291 transitions. [2021-10-11 02:26:52,495 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1291 transitions. Word has length 219 [2021-10-11 02:26:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:52,495 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1291 transitions. [2021-10-11 02:26:52,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1291 transitions. [2021-10-11 02:26:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-11 02:26:52,499 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:52,500 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:52,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:26:52,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:52,501 INFO L82 PathProgramCache]: Analyzing trace with hash -194111272, now seen corresponding path program 1 times [2021-10-11 02:26:52,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:52,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626195902] [2021-10-11 02:26:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-10-11 02:26:52,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626195902] [2021-10-11 02:26:52,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:52,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430661640] [2021-10-11 02:26:52,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:52,673 INFO L87 Difference]: Start difference. First operand 1068 states and 1291 transitions. Second operand 3 states. [2021-10-11 02:26:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:52,991 INFO L93 Difference]: Finished difference Result 2135 states and 2581 transitions. [2021-10-11 02:26:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:52,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2021-10-11 02:26:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:52,997 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:26:52,998 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:26:52,999 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 02:26:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:26:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-10-11 02:26:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1259 transitions. [2021-10-11 02:26:53,035 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1259 transitions. Word has length 232 [2021-10-11 02:26:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:53,035 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1259 transitions. [2021-10-11 02:26:53,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1259 transitions. [2021-10-11 02:26:53,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-11 02:26:53,040 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:53,041 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:53,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:26:53,041 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:53,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1646211440, now seen corresponding path program 1 times [2021-10-11 02:26:53,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:53,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3989594] [2021-10-11 02:26:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:26:53,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3989594] [2021-10-11 02:26:53,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318723098] [2021-10-11 02:26:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:26:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:53,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:26:54,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:26:54,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:54,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:26:54,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574693688] [2021-10-11 02:26:54,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:54,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:54,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:54,349 INFO L87 Difference]: Start difference. First operand 1068 states and 1259 transitions. Second operand 3 states. [2021-10-11 02:26:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:54,740 INFO L93 Difference]: Finished difference Result 2346 states and 2757 transitions. [2021-10-11 02:26:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:54,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2021-10-11 02:26:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:54,742 INFO L225 Difference]: With dead ends: 2346 [2021-10-11 02:26:54,742 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:54,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:54,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-10-11 02:26:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:54,746 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:54,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:54,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:54,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:26:54,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:55,273 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-10-11 02:26:55,469 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2021-10-11 02:26:55,472 INFO L262 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2021-10-11 02:26:55,472 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:26:55,472 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:26:55,472 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:26:55,472 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:26:55,473 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:26:55,474 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:26:55,475 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse1 (not .cse4)) (.cse5 (<= 15 ~a8~0)) (.cse6 (= ~a16~0 6)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse3 (<= ~a7~0 0) .cse4 (= ~a17~0 1)) (and .cse3 .cse0) (and .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse5) (and .cse6 .cse4 .cse2)))) [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:26:55,476 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:26:55,477 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse1 (not .cse4)) (.cse5 (<= 15 ~a8~0)) (.cse6 (= ~a16~0 6)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse3 (<= ~a7~0 0) .cse4 (= ~a17~0 1)) (and .cse3 .cse0) (and .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse5) (and .cse6 .cse4 .cse2)))) [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:26:55,478 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 564) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:26:55,479 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:26:55,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:55 BoogieIcfgContainer [2021-10-11 02:26:55,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:55,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:55,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:55,498 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:55,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:45" (3/4) ... [2021-10-11 02:26:55,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:55,524 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:26:55,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:26:55,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:26:55,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:26:55,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9550d553-ab02-42b7-a71e-2e9ac45ca824/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:55,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:55,641 INFO L168 Benchmark]: Toolchain (without parser) took 13982.89 ms. Allocated memory was 104.9 MB in the beginning and 425.7 MB in the end (delta: 320.9 MB). Free memory was 64.5 MB in the beginning and 237.1 MB in the end (delta: -172.6 MB). Peak memory consumption was 148.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,642 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 82.7 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:55,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.11 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 64.0 MB in the end (delta: 336.2 kB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,643 INFO L168 Benchmark]: Boogie Preprocessor took 58.83 ms. Allocated memory is still 104.9 MB. Free memory was 58.3 MB in the beginning and 53.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,644 INFO L168 Benchmark]: RCFGBuilder took 2392.29 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 53.5 MB in the beginning and 59.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,644 INFO L168 Benchmark]: TraceAbstraction took 10484.58 ms. Allocated memory was 132.1 MB in the beginning and 425.7 MB in the end (delta: 293.6 MB). Free memory was 59.4 MB in the beginning and 251.8 MB in the end (delta: -192.4 MB). Peak memory consumption was 102.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,645 INFO L168 Benchmark]: Witness Printer took 142.68 ms. Allocated memory is still 425.7 MB. Free memory was 251.8 MB in the beginning and 237.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:55,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 104.9 MB. Free memory was 82.8 MB in the beginning and 82.7 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 803.11 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 64.0 MB in the end (delta: 336.2 kB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 104.9 MB. Free memory was 63.7 MB in the beginning and 58.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.83 ms. Allocated memory is still 104.9 MB. Free memory was 58.3 MB in the beginning and 53.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2392.29 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 53.5 MB in the beginning and 59.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10484.58 ms. Allocated memory was 132.1 MB in the beginning and 425.7 MB in the end (delta: 293.6 MB). Free memory was 59.4 MB in the beginning and 251.8 MB in the end (delta: -192.4 MB). Peak memory consumption was 102.2 MB. Max. memory is 16.1 GB. * Witness Printer took 142.68 ms. Allocated memory is still 425.7 MB. Free memory was 251.8 MB in the beginning and 237.1 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: 564]: 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: 40]: Loop Invariant Derived loop invariant: ((((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && a8 <= 13)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a21 == 1 && a16 <= 5)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((a16 == 6 && a20 == 1) && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && a8 <= 13)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a21 == 1 && a16 <= 5)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((a16 == 6 && a20 == 1) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 13, TraceHistogramMax: 8, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 648 SDtfs, 919 SDslu, 59 SDs, 0 SdLazy, 3055 SolverSat, 761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 497 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 1522 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 135 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5126 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 366 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1874 NumberOfCodeBlocks, 1874 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2100 ConstructedInterpolants, 0 QuantifiedInterpolants, 1062622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 2218/2360 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...