./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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 601109ddd57cf630523568b284ec5251e7a82dbd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:31:14,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:14,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:14,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:14,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:14,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:14,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:14,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:14,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:14,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:14,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:14,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:14,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:14,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:14,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:14,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:14,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:14,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:14,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:14,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:14,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:14,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:14,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:14,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:14,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:14,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:14,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:14,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:14,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:14,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:14,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:14,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:14,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:14,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:14,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:14,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:14,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:14,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:14,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:14,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:14,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:14,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:14,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:14,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:14,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:14,279 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:14,280 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:14,280 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:14,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:14,281 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:14,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:14,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:14,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:14,286 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:14,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:14,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:14,287 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:14,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:14,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:14,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:14,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:14,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:14,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:14,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:14,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:14,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:14,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:14,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:14,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:14,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:14,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:14,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:14,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:14,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:14,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:14,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:14,295 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:14,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:14,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:14,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:14,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:14,296 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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 601109ddd57cf630523568b284ec5251e7a82dbd [2021-10-11 02:31:14,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:14,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:14,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:14,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:14,626 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:14,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2021-10-11 02:31:14,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/data/506d57cf1/f798be6adfbd4420af158ff6964e343b/FLAG6eb633df5 [2021-10-11 02:31:15,299 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:15,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2021-10-11 02:31:15,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/data/506d57cf1/f798be6adfbd4420af158ff6964e343b/FLAG6eb633df5 [2021-10-11 02:31:15,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/data/506d57cf1/f798be6adfbd4420af158ff6964e343b [2021-10-11 02:31:15,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:15,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:15,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:15,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:15,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:15,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:15" (1/1) ... [2021-10-11 02:31:15,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe59ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:15, skipping insertion in model container [2021-10-11 02:31:15,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:15" (1/1) ... [2021-10-11 02:31:15,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:15,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:16,005 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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2021-10-11 02:31:16,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:16,061 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:16,216 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_4e31fa0b-e798-427d-9eb1-5694ebf8d453/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2021-10-11 02:31:16,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:16,277 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:16,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16 WrapperNode [2021-10-11 02:31:16,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:16,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:16,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:16,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:16,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:16,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:16,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:16,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:16,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... [2021-10-11 02:31:16,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:16,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:16,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:16,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:16,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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 02:31:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:16,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:16,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:18,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:18,696 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:31:18,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:18 BoogieIcfgContainer [2021-10-11 02:31:18,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:18,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:18,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:18,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:18,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:15" (1/3) ... [2021-10-11 02:31:18,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760e3b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:18, skipping insertion in model container [2021-10-11 02:31:18,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:16" (2/3) ... [2021-10-11 02:31:18,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760e3b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:18, skipping insertion in model container [2021-10-11 02:31:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:18" (3/3) ... [2021-10-11 02:31:18,712 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2021-10-11 02:31:18,729 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:18,732 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:18,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:18,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:18,784 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:18,784 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:18,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:18,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:18,785 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:18,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:18,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:31:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:31:18,815 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:18,816 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 02:31:18,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:18,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1806915416, now seen corresponding path program 1 times [2021-10-11 02:31:18,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:18,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267652008] [2021-10-11 02:31:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:19,261 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 02:31:19,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267652008] [2021-10-11 02:31:19,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:19,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:19,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256852263] [2021-10-11 02:31:19,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:19,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:19,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:19,289 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:31:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:19,902 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:31:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:19,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:31:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:19,935 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:31:19,935 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:31:19,939 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 02:31:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:31:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:31:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:31:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-11 02:31:19,992 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-11 02:31:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:19,993 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-11 02:31:19,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-11 02:31:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:31:19,997 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:19,998 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 02:31:19,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:19,998 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1694592830, now seen corresponding path program 1 times [2021-10-11 02:31:19,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:20,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229406193] [2021-10-11 02:31:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:20,061 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 02:31:20,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229406193] [2021-10-11 02:31:20,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:20,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:20,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278276778] [2021-10-11 02:31:20,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:20,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:20,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:20,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:20,065 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2021-10-11 02:31:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:20,534 INFO L93 Difference]: Finished difference Result 433 states and 811 transitions. [2021-10-11 02:31:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:20,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:31:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:20,543 INFO L225 Difference]: With dead ends: 433 [2021-10-11 02:31:20,543 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:31:20,546 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 02:31:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:31:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2021-10-11 02:31:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:31:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-11 02:31:20,586 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-11 02:31:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:20,587 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-11 02:31:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-11 02:31:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:31:20,599 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:20,599 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 02:31:20,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:20,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:20,601 INFO L82 PathProgramCache]: Analyzing trace with hash -143905971, now seen corresponding path program 1 times [2021-10-11 02:31:20,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:20,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863429533] [2021-10-11 02:31:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:20,720 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 02:31:20,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863429533] [2021-10-11 02:31:20,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:20,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:20,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909794223] [2021-10-11 02:31:20,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:20,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:20,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:20,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:20,730 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand 4 states. [2021-10-11 02:31:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:21,447 INFO L93 Difference]: Finished difference Result 999 states and 1753 transitions. [2021-10-11 02:31:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:21,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:31:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:21,453 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:31:21,454 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:31:21,459 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 02:31:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:31:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-11 02:31:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:31:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1104 transitions. [2021-10-11 02:31:21,540 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1104 transitions. Word has length 83 [2021-10-11 02:31:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:21,542 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1104 transitions. [2021-10-11 02:31:21,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1104 transitions. [2021-10-11 02:31:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:31:21,546 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:21,546 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 02:31:21,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:31:21,547 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1140308187, now seen corresponding path program 1 times [2021-10-11 02:31:21,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:21,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487327748] [2021-10-11 02:31:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:21,684 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 02:31:21,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487327748] [2021-10-11 02:31:21,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:21,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:21,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497989134] [2021-10-11 02:31:21,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:21,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:21,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:21,691 INFO L87 Difference]: Start difference. First operand 713 states and 1104 transitions. Second operand 3 states. [2021-10-11 02:31:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:22,149 INFO L93 Difference]: Finished difference Result 1780 states and 2688 transitions. [2021-10-11 02:31:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:22,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:31:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:22,157 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:31:22,158 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:31:22,159 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 02:31:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:31:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:31:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:31:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1359 transitions. [2021-10-11 02:31:22,188 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1359 transitions. Word has length 86 [2021-10-11 02:31:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:22,189 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1359 transitions. [2021-10-11 02:31:22,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1359 transitions. [2021-10-11 02:31:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-11 02:31:22,192 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:22,192 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 02:31:22,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:31:22,193 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:22,194 INFO L82 PathProgramCache]: Analyzing trace with hash -886290153, now seen corresponding path program 1 times [2021-10-11 02:31:22,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:22,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271424617] [2021-10-11 02:31:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:22,272 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 02:31:22,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271424617] [2021-10-11 02:31:22,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:22,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:22,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718640563] [2021-10-11 02:31:22,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:22,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:22,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:22,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:22,278 INFO L87 Difference]: Start difference. First operand 926 states and 1359 transitions. Second operand 3 states. [2021-10-11 02:31:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:22,716 INFO L93 Difference]: Finished difference Result 2206 states and 3296 transitions. [2021-10-11 02:31:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:22,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2021-10-11 02:31:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:22,725 INFO L225 Difference]: With dead ends: 2206 [2021-10-11 02:31:22,725 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:31:22,727 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 02:31:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:31:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:31:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:31:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1536 transitions. [2021-10-11 02:31:22,760 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1536 transitions. Word has length 87 [2021-10-11 02:31:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:22,760 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1536 transitions. [2021-10-11 02:31:22,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1536 transitions. [2021-10-11 02:31:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-11 02:31:22,764 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:22,764 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 02:31:22,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:31:22,765 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1043324307, now seen corresponding path program 1 times [2021-10-11 02:31:22,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:22,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802789208] [2021-10-11 02:31:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:22,844 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 02:31:22,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802789208] [2021-10-11 02:31:22,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:22,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:22,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380749024] [2021-10-11 02:31:22,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:22,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:22,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:22,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:22,847 INFO L87 Difference]: Start difference. First operand 1210 states and 1536 transitions. Second operand 4 states. [2021-10-11 02:31:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:23,387 INFO L93 Difference]: Finished difference Result 2419 states and 3071 transitions. [2021-10-11 02:31:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:23,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2021-10-11 02:31:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:23,403 INFO L225 Difference]: With dead ends: 2419 [2021-10-11 02:31:23,403 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:31:23,405 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 02:31:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:31:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:31:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:31:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1483 transitions. [2021-10-11 02:31:23,437 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1483 transitions. Word has length 90 [2021-10-11 02:31:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:23,441 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1483 transitions. [2021-10-11 02:31:23,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1483 transitions. [2021-10-11 02:31:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-11 02:31:23,444 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:23,444 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 02:31:23,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:31:23,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1202867950, now seen corresponding path program 1 times [2021-10-11 02:31:23,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:23,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575032943] [2021-10-11 02:31:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:23,644 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 02:31:23,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575032943] [2021-10-11 02:31:23,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:23,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:23,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685180312] [2021-10-11 02:31:23,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:23,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:23,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:23,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:23,649 INFO L87 Difference]: Start difference. First operand 1210 states and 1483 transitions. Second operand 3 states. [2021-10-11 02:31:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:24,010 INFO L93 Difference]: Finished difference Result 2916 states and 3610 transitions. [2021-10-11 02:31:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:24,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2021-10-11 02:31:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:24,021 INFO L225 Difference]: With dead ends: 2916 [2021-10-11 02:31:24,021 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:31:24,023 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 02:31:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:31:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1281. [2021-10-11 02:31:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:31:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1575 transitions. [2021-10-11 02:31:24,059 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1575 transitions. Word has length 108 [2021-10-11 02:31:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:24,060 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1575 transitions. [2021-10-11 02:31:24,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1575 transitions. [2021-10-11 02:31:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-11 02:31:24,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:24,064 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 02:31:24,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:31:24,065 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1080134985, now seen corresponding path program 1 times [2021-10-11 02:31:24,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:24,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204031131] [2021-10-11 02:31:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-10-11 02:31:24,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204031131] [2021-10-11 02:31:24,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271474954] [2021-10-11 02:31:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/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 02:31:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:24,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-11 02:31:24,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-11 02:31:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:25,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:31:25,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246057202] [2021-10-11 02:31:25,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:25,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:25,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:25,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:25,040 INFO L87 Difference]: Start difference. First operand 1281 states and 1575 transitions. Second operand 3 states. [2021-10-11 02:31:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:25,443 INFO L93 Difference]: Finished difference Result 2845 states and 3541 transitions. [2021-10-11 02:31:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:25,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2021-10-11 02:31:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:25,455 INFO L225 Difference]: With dead ends: 2845 [2021-10-11 02:31:25,455 INFO L226 Difference]: Without dead ends: 1565 [2021-10-11 02:31:25,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-11 02:31:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1423. [2021-10-11 02:31:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2021-10-11 02:31:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1747 transitions. [2021-10-11 02:31:25,500 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1747 transitions. Word has length 176 [2021-10-11 02:31:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:25,502 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1747 transitions. [2021-10-11 02:31:25,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1747 transitions. [2021-10-11 02:31:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-10-11 02:31:25,507 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:25,508 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:31:25,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:31:25,735 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1749870580, now seen corresponding path program 1 times [2021-10-11 02:31:25,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:25,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367197263] [2021-10-11 02:31:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 165 proven. 46 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:31:26,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367197263] [2021-10-11 02:31:26,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281556594] [2021-10-11 02:31:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:26,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:26,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:31:26,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:31:26,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:26,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:31:26,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121789992] [2021-10-11 02:31:26,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:26,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:26,773 INFO L87 Difference]: Start difference. First operand 1423 states and 1747 transitions. Second operand 3 states. [2021-10-11 02:31:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:27,174 INFO L93 Difference]: Finished difference Result 3129 states and 3857 transitions. [2021-10-11 02:31:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:27,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2021-10-11 02:31:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:27,187 INFO L225 Difference]: With dead ends: 3129 [2021-10-11 02:31:27,187 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:31:27,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:31:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1423. [2021-10-11 02:31:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2021-10-11 02:31:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1747 transitions. [2021-10-11 02:31:27,227 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1747 transitions. Word has length 209 [2021-10-11 02:31:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:27,228 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1747 transitions. [2021-10-11 02:31:27,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1747 transitions. [2021-10-11 02:31:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-10-11 02:31:27,233 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:27,234 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:31:27,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:27,459 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1404092090, now seen corresponding path program 1 times [2021-10-11 02:31:27,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:27,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220213904] [2021-10-11 02:31:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 189 proven. 11 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-10-11 02:31:27,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220213904] [2021-10-11 02:31:27,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000575751] [2021-10-11 02:31:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:31:27,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-11 02:31:28,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-11 02:31:28,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:31:28,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:31:28,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823280391] [2021-10-11 02:31:28,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:28,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:28,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:28,453 INFO L87 Difference]: Start difference. First operand 1423 states and 1747 transitions. Second operand 4 states. [2021-10-11 02:31:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:29,065 INFO L93 Difference]: Finished difference Result 2701 states and 3290 transitions. [2021-10-11 02:31:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:29,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2021-10-11 02:31:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:29,066 INFO L225 Difference]: With dead ends: 2701 [2021-10-11 02:31:29,066 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:29,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:29,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2021-10-11 02:31:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:29,071 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:29,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:29,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:29,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:31:29,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:29,567 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-10-11 02:31:29,740 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-10-11 02:31:29,743 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:31:29,743 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:31:29,743 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:31:29,743 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:31:29,744 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:31:29,745 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:31:29,745 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:31:29,745 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:31:29,745 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:31:29,746 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:31:29,746 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:31:29,746 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:31:29,746 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:31:29,746 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:31:29,747 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:31:29,747 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:31:29,747 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:31:29,747 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:31:29,747 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:31:29,748 INFO L262 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:31:29,751 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:31:29,752 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:31:29,753 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:31:29,753 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:29,754 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:31:29,754 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:31:29,754 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:31:29,756 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (<= ~a7~0 0)) (.cse5 (not .cse3)) (.cse1 (<= 15 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and (<= 14 ~a8~0) (or (and .cse0 .cse1) (and .cse0 .cse2 .cse3))) (and .cse2 (not .cse4) .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse3) (and (<= ~a16~0 4) .cse3 .cse4) (<= ~a21~0 0) (and .cse5 .cse1) (and .cse1 .cse4)))) [2021-10-11 02:31:29,756 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:31:29,757 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:31:29,758 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:31:29,759 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:31:29,760 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:31:29,760 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (<= ~a7~0 0)) (.cse5 (not .cse3)) (.cse1 (<= 15 ~a8~0)) (.cse4 (= ~a17~0 1))) (or (and (<= 14 ~a8~0) (or (and .cse0 .cse1) (and .cse0 .cse2 .cse3))) (and .cse2 (not .cse4) .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse2 .cse6 .cse3) (and (<= ~a16~0 4) .cse3 .cse4) (<= ~a21~0 0) (and .cse5 .cse1) (and .cse1 .cse4)))) [2021-10-11 02:31:29,760 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:31:29,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 447) no Hoare annotation was computed. [2021-10-11 02:31:29,761 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:31:29,761 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:31:29,761 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:31:29,761 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:31:29,761 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:31:29,762 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:31:29,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:29 BoogieIcfgContainer [2021-10-11 02:31:29,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:29,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:29,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:29,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:29,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:18" (3/4) ... [2021-10-11 02:31:29,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:29,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:31:29,850 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:31:29,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:31:29,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:31:30,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e31fa0b-e798-427d-9eb1-5694ebf8d453/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:30,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:30,066 INFO L168 Benchmark]: Toolchain (without parser) took 14499.43 ms. Allocated memory was 83.9 MB in the beginning and 373.3 MB in the end (delta: 289.4 MB). Free memory was 48.1 MB in the beginning and 138.4 MB in the end (delta: -90.3 MB). Peak memory consumption was 197.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,067 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:30,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.98 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.8 MB in the beginning and 59.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.64 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 53.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,068 INFO L168 Benchmark]: Boogie Preprocessor took 108.87 ms. Allocated memory is still 100.7 MB. Free memory was 53.6 MB in the beginning and 49.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,069 INFO L168 Benchmark]: RCFGBuilder took 2193.73 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 49.4 MB in the beginning and 91.8 MB in the end (delta: -42.4 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,069 INFO L168 Benchmark]: TraceAbstraction took 11090.13 ms. Allocated memory was 140.5 MB in the beginning and 373.3 MB in the end (delta: 232.8 MB). Free memory was 91.8 MB in the beginning and 154.1 MB in the end (delta: -62.3 MB). Peak memory consumption was 171.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,070 INFO L168 Benchmark]: Witness Printer took 270.69 ms. Allocated memory is still 373.3 MB. Free memory was 154.1 MB in the beginning and 138.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.98 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.8 MB in the beginning and 59.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.64 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 53.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.87 ms. Allocated memory is still 100.7 MB. Free memory was 53.6 MB in the beginning and 49.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2193.73 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 49.4 MB in the beginning and 91.8 MB in the end (delta: -42.4 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11090.13 ms. Allocated memory was 140.5 MB in the beginning and 373.3 MB in the end (delta: 232.8 MB). Free memory was 91.8 MB in the beginning and 154.1 MB in the end (delta: -62.3 MB). Peak memory consumption was 171.6 MB. Max. memory is 16.1 GB. * Witness Printer took 270.69 ms. Allocated memory is still 373.3 MB. Free memory was 154.1 MB in the beginning and 138.4 MB in the end (delta: 15.7 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: 447]: 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: (((((((14 <= a8 && ((a21 == 1 && 15 <= a8) || ((a21 == 1 && a16 <= 5) && a20 == 1))) || ((a16 <= 5 && !(a17 == 1)) && !(a20 == 1))) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || a21 <= 0) || (!(a20 == 1) && 15 <= a8)) || (15 <= a8 && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((14 <= a8 && ((a21 == 1 && 15 <= a8) || ((a21 == 1 && a16 <= 5) && a20 == 1))) || ((a16 <= 5 && !(a17 == 1)) && !(a20 == 1))) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || a21 <= 0) || (!(a20 == 1) && 15 <= a8)) || (15 <= a8 && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.5s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 384 SDtfs, 804 SDslu, 50 SDs, 0 SdLazy, 2428 SolverSat, 622 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1235 GetRequests, 1212 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1423occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 996 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 179 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1132 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1813 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082766 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1340 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 2387/2455 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...