./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH --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 2b164c8a6d888b02829fcf47aa29b65b3f70721fb3d5c6d11e211a49d8b59e83 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:11:27,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:11:27,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:11:27,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:11:27,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:11:27,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:11:27,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:11:27,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:11:27,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:11:27,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:11:27,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:11:27,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:11:27,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:11:27,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:11:27,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:11:27,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:11:27,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:11:27,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:11:27,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:11:27,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:11:27,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:11:27,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:11:27,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:11:27,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:11:27,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:11:27,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:11:27,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:11:27,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:11:27,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:11:27,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:11:27,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:11:27,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:11:27,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:11:27,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:11:27,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:11:27,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:11:27,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:11:27,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:11:27,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:11:27,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:11:27,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:11:27,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:11:27,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:11:27,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:11:27,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:11:27,277 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:11:27,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:11:27,277 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:11:27,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:11:27,278 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:11:27,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:11:27,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:11:27,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:11:27,280 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:11:27,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:11:27,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:11:27,280 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:11:27,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:11:27,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:11:27,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:11:27,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:11:27,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:11:27,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:11:27,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:11:27,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:11:27,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:11:27,284 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:11:27,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:11:27,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:11:27,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:11:27,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:11:27,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:11:27,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:11:27,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:11:27,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:11:27,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:11:27,288 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:11:27,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:11:27,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:11:27,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:11:27,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:11:27,289 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_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b164c8a6d888b02829fcf47aa29b65b3f70721fb3d5c6d11e211a49d8b59e83 [2021-11-03 04:11:27,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:11:27,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:11:27,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:11:27,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:11:27,613 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:11:27,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2021-11-03 04:11:27,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/data/f276b2ecb/fc1535ccf77a4d59ad7453250aad93eb/FLAG202ec355a [2021-11-03 04:11:28,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:11:28,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2021-11-03 04:11:28,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/data/f276b2ecb/fc1535ccf77a4d59ad7453250aad93eb/FLAG202ec355a [2021-11-03 04:11:28,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/data/f276b2ecb/fc1535ccf77a4d59ad7453250aad93eb [2021-11-03 04:11:28,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:11:28,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:11:28,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:11:28,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:11:28,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:11:28,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:28" (1/1) ... [2021-11-03 04:11:28,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6d017a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:28, skipping insertion in model container [2021-11-03 04:11:28,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:28" (1/1) ... [2021-11-03 04:11:28,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:11:28,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:11:29,082 WARN L228 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_ef6caf77-43b2-4d43-a15c-91d693801cd4/sv-benchmarks/c/eca-rers2012/Problem01_label08.c[19599,19612] [2021-11-03 04:11:29,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:11:29,134 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:11:29,273 WARN L228 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_ef6caf77-43b2-4d43-a15c-91d693801cd4/sv-benchmarks/c/eca-rers2012/Problem01_label08.c[19599,19612] [2021-11-03 04:11:29,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:11:29,313 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:11:29,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29 WrapperNode [2021-11-03 04:11:29,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:11:29,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:11:29,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:11:29,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:11:29,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:11:29,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:11:29,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:11:29,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:11:29,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:11:29,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:11:29,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:11:29,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:11:29,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (1/1) ... [2021-11-03 04:11:29,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:11:29,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:11:29,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:11:29,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:11:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:11:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:11:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:11:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:11:31,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:11:31,424 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:11:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:31 BoogieIcfgContainer [2021-11-03 04:11:31,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:11:31,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:11:31,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:11:31,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:11:31,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:11:28" (1/3) ... [2021-11-03 04:11:31,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3415bd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:31, skipping insertion in model container [2021-11-03 04:11:31,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:29" (2/3) ... [2021-11-03 04:11:31,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3415bd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:31, skipping insertion in model container [2021-11-03 04:11:31,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:31" (3/3) ... [2021-11-03 04:11:31,434 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2021-11-03 04:11:31,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:11:31,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:11:31,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:11:31,493 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:11:31,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:11:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:11:31,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:31,517 INFO L513 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] [2021-11-03 04:11:31,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 379025287, now seen corresponding path program 1 times [2021-11-03 04:11:31,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:31,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021238291] [2021-11-03 04:11:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:31,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:32,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:32,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021238291] [2021-11-03 04:11:32,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021238291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:32,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:32,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:32,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688735426] [2021-11-03 04:11:32,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:32,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:32,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:32,053 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:32,478 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-03 04:11:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:11:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:32,501 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:11:32,501 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:11:32,506 INFO L786 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 [2021-11-03 04:11:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:11:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-03 04:11:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-11-03 04:11:32,577 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-11-03 04:11:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:32,578 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-11-03 04:11:32,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-11-03 04:11:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:11:32,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:32,585 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:32,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:11:32,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash -615336422, now seen corresponding path program 1 times [2021-11-03 04:11:32,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:32,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684848277] [2021-11-03 04:11:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:32,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:32,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:32,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684848277] [2021-11-03 04:11:32,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684848277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:32,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:32,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:32,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967314552] [2021-11-03 04:11:32,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:32,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:32,717 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:33,055 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-11-03 04:11:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 04:11:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:33,061 INFO L225 Difference]: With dead ends: 431 [2021-11-03 04:11:33,061 INFO L226 Difference]: Without dead ends: 287 [2021-11-03 04:11:33,064 INFO L786 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 [2021-11-03 04:11:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-03 04:11:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-03 04:11:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-11-03 04:11:33,106 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-11-03 04:11:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:33,106 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-11-03 04:11:33,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-11-03 04:11:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 04:11:33,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:33,116 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:33,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:11:33,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:33,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1933825803, now seen corresponding path program 1 times [2021-11-03 04:11:33,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:33,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143483654] [2021-11-03 04:11:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:33,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:11:33,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:33,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143483654] [2021-11-03 04:11:33,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143483654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:33,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17320959] [2021-11-03 04:11:33,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:33,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:33,240 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:33,576 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-11-03 04:11:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-03 04:11:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:33,579 INFO L225 Difference]: With dead ends: 715 [2021-11-03 04:11:33,579 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 04:11:33,581 INFO L786 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 [2021-11-03 04:11:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 04:11:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-11-03 04:11:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-11-03 04:11:33,593 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-11-03 04:11:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-11-03 04:11:33,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-11-03 04:11:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 04:11:33,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:33,596 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:11:33,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 218745791, now seen corresponding path program 1 times [2021-11-03 04:11:33,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:33,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374042766] [2021-11-03 04:11:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:33,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-03 04:11:33,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:33,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374042766] [2021-11-03 04:11:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374042766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:33,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:33,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920179933] [2021-11-03 04:11:33,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:33,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:33,651 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:33,934 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-11-03 04:11:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-03 04:11:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:33,937 INFO L225 Difference]: With dead ends: 715 [2021-11-03 04:11:33,937 INFO L226 Difference]: Without dead ends: 358 [2021-11-03 04:11:33,938 INFO L786 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 [2021-11-03 04:11:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-03 04:11:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-11-03 04:11:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-11-03 04:11:33,948 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-11-03 04:11:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:33,948 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-11-03 04:11:33,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-11-03 04:11:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 04:11:33,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:33,950 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:33,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:11:33,951 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 674879479, now seen corresponding path program 1 times [2021-11-03 04:11:33,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:33,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500768818] [2021-11-03 04:11:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:33,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-03 04:11:33,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:33,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500768818] [2021-11-03 04:11:33,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500768818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:33,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:34,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:34,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764685287] [2021-11-03 04:11:34,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:34,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:34,001 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:34,302 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2021-11-03 04:11:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 04:11:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:34,306 INFO L225 Difference]: With dead ends: 857 [2021-11-03 04:11:34,306 INFO L226 Difference]: Without dead ends: 500 [2021-11-03 04:11:34,307 INFO L786 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 [2021-11-03 04:11:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-03 04:11:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-11-03 04:11:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2021-11-03 04:11:34,321 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2021-11-03 04:11:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:34,322 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2021-11-03 04:11:34,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2021-11-03 04:11:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 04:11:34,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:34,324 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:34,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:11:34,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -692381771, now seen corresponding path program 1 times [2021-11-03 04:11:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:34,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670926290] [2021-11-03 04:11:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:34,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:11:34,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:34,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670926290] [2021-11-03 04:11:34,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670926290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:34,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:34,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:11:34,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979248390] [2021-11-03 04:11:34,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:34,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:34,372 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:34,716 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2021-11-03 04:11:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 04:11:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:34,722 INFO L225 Difference]: With dead ends: 1354 [2021-11-03 04:11:34,722 INFO L226 Difference]: Without dead ends: 855 [2021-11-03 04:11:34,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-03 04:11:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-11-03 04:11:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2021-11-03 04:11:34,743 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2021-11-03 04:11:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:34,743 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2021-11-03 04:11:34,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2021-11-03 04:11:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 04:11:34,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:34,746 INFO L513 BasicCegarLoop]: trace histogram [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, 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] [2021-11-03 04:11:34,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:11:34,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash 240374715, now seen corresponding path program 1 times [2021-11-03 04:11:34,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:34,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220007541] [2021-11-03 04:11:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:34,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 04:11:34,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:34,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220007541] [2021-11-03 04:11:34,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220007541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:34,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:34,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:11:34,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652782936] [2021-11-03 04:11:34,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:34,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:34,805 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:35,080 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2021-11-03 04:11:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:35,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 04:11:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:35,085 INFO L225 Difference]: With dead ends: 1354 [2021-11-03 04:11:35,085 INFO L226 Difference]: Without dead ends: 713 [2021-11-03 04:11:35,086 INFO L786 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 [2021-11-03 04:11:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-03 04:11:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-11-03 04:11:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2021-11-03 04:11:35,105 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2021-11-03 04:11:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:35,106 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2021-11-03 04:11:35,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2021-11-03 04:11:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 04:11:35,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:35,110 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 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, 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] [2021-11-03 04:11:35,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:11:35,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1229085797, now seen corresponding path program 1 times [2021-11-03 04:11:35,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:35,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894937071] [2021-11-03 04:11:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:35,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-03 04:11:35,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:35,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894937071] [2021-11-03 04:11:35,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894937071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:35,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:35,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:11:35,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607631541] [2021-11-03 04:11:35,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:35,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:35,183 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:35,658 INFO L93 Difference]: Finished difference Result 1780 states and 2557 transitions. [2021-11-03 04:11:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:11:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-03 04:11:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:35,664 INFO L225 Difference]: With dead ends: 1780 [2021-11-03 04:11:35,665 INFO L226 Difference]: Without dead ends: 997 [2021-11-03 04:11:35,666 INFO L786 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 [2021-11-03 04:11:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-03 04:11:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-11-03 04:11:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2359437751004017) internal successors, (1231), 996 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1231 transitions. [2021-11-03 04:11:35,691 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1231 transitions. Word has length 154 [2021-11-03 04:11:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:35,691 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1231 transitions. [2021-11-03 04:11:35,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1231 transitions. [2021-11-03 04:11:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-03 04:11:35,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:35,696 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:35,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:11:35,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2145598008, now seen corresponding path program 1 times [2021-11-03 04:11:35,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:35,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634064617] [2021-11-03 04:11:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:35,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-03 04:11:35,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:35,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634064617] [2021-11-03 04:11:35,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634064617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:35,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:35,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:11:35,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256014105] [2021-11-03 04:11:35,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:35,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:35,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:35,778 INFO L87 Difference]: Start difference. First operand 997 states and 1231 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:36,186 INFO L93 Difference]: Finished difference Result 2206 states and 2715 transitions. [2021-11-03 04:11:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:11:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-03 04:11:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:36,193 INFO L225 Difference]: With dead ends: 2206 [2021-11-03 04:11:36,193 INFO L226 Difference]: Without dead ends: 1210 [2021-11-03 04:11:36,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-03 04:11:36,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2021-11-03 04:11:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1927710843373494) internal successors, (1188), 996 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1188 transitions. [2021-11-03 04:11:36,219 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1188 transitions. Word has length 171 [2021-11-03 04:11:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:36,219 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1188 transitions. [2021-11-03 04:11:36,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1188 transitions. [2021-11-03 04:11:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 04:11:36,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:36,223 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:11:36,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:11:36,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:36,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1532628297, now seen corresponding path program 1 times [2021-11-03 04:11:36,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:36,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877511699] [2021-11-03 04:11:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:36,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:36,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:36,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877511699] [2021-11-03 04:11:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877511699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:11:36,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230376896] [2021-11-03 04:11:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:36,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:11:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:11:36,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:11:36,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:11:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:36,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:11:36,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-03 04:11:37,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-03 04:11:37,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230376896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:37,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:11:37,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5] total 6 [2021-11-03 04:11:37,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125883590] [2021-11-03 04:11:37,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:37,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:11:37,649 INFO L87 Difference]: Start difference. First operand 997 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:37,902 INFO L93 Difference]: Finished difference Result 1709 states and 2015 transitions. [2021-11-03 04:11:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:37,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-03 04:11:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:37,912 INFO L225 Difference]: With dead ends: 1709 [2021-11-03 04:11:37,912 INFO L226 Difference]: Without dead ends: 1707 [2021-11-03 04:11:37,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:11:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-03 04:11:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1565. [2021-11-03 04:11:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.1796675191815857) internal successors, (1845), 1564 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1845 transitions. [2021-11-03 04:11:37,953 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1845 transitions. Word has length 175 [2021-11-03 04:11:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:37,954 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 1845 transitions. [2021-11-03 04:11:37,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1845 transitions. [2021-11-03 04:11:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-03 04:11:37,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:37,959 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 04:11:37,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:38,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:11:38,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1287881272, now seen corresponding path program 1 times [2021-11-03 04:11:38,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:38,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645418315] [2021-11-03 04:11:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:38,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-03 04:11:38,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:38,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645418315] [2021-11-03 04:11:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645418315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:38,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:38,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:11:38,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756644005] [2021-11-03 04:11:38,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:11:38,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:11:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:11:38,273 INFO L87 Difference]: Start difference. First operand 1565 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:38,668 INFO L93 Difference]: Finished difference Result 3200 states and 3779 transitions. [2021-11-03 04:11:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:11:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-03 04:11:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:38,678 INFO L225 Difference]: With dead ends: 3200 [2021-11-03 04:11:38,678 INFO L226 Difference]: Without dead ends: 1636 [2021-11-03 04:11:38,683 INFO L786 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 [2021-11-03 04:11:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-03 04:11:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-11-03 04:11:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.164525993883792) internal successors, (1904), 1635 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1904 transitions. [2021-11-03 04:11:38,727 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1904 transitions. Word has length 202 [2021-11-03 04:11:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:38,727 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 1904 transitions. [2021-11-03 04:11:38,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1904 transitions. [2021-11-03 04:11:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-03 04:11:38,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:38,734 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-11-03 04:11:38,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 04:11:38,734 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1529632152, now seen corresponding path program 1 times [2021-11-03 04:11:38,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:38,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661422530] [2021-11-03 04:11:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:38,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-03 04:11:38,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:38,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661422530] [2021-11-03 04:11:38,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661422530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:38,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:38,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:11:38,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159600551] [2021-11-03 04:11:38,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:38,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:38,853 INFO L87 Difference]: Start difference. First operand 1636 states and 1904 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:39,132 INFO L93 Difference]: Finished difference Result 3555 states and 4140 transitions. [2021-11-03 04:11:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-03 04:11:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:39,143 INFO L225 Difference]: With dead ends: 3555 [2021-11-03 04:11:39,143 INFO L226 Difference]: Without dead ends: 1920 [2021-11-03 04:11:39,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-03 04:11:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1849. [2021-11-03 04:11:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 1.146103896103896) internal successors, (2118), 1848 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2118 transitions. [2021-11-03 04:11:39,195 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2118 transitions. Word has length 233 [2021-11-03 04:11:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:39,195 INFO L470 AbstractCegarLoop]: Abstraction has 1849 states and 2118 transitions. [2021-11-03 04:11:39,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2118 transitions. [2021-11-03 04:11:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 04:11:39,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:39,202 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:39,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 04:11:39,203 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1886815535, now seen corresponding path program 1 times [2021-11-03 04:11:39,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:39,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111727320] [2021-11-03 04:11:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:39,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-03 04:11:39,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:39,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111727320] [2021-11-03 04:11:39,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111727320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:11:39,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120794390] [2021-11-03 04:11:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:39,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:11:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:11:39,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:11:39,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:11:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:39,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:11:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-03 04:11:40,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-03 04:11:40,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120794390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:40,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:11:40,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-03 04:11:40,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511624087] [2021-11-03 04:11:40,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:40,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:11:40,894 INFO L87 Difference]: Start difference. First operand 1849 states and 2118 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:41,171 INFO L93 Difference]: Finished difference Result 2135 states and 2428 transitions. [2021-11-03 04:11:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:41,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-03 04:11:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:41,182 INFO L225 Difference]: With dead ends: 2135 [2021-11-03 04:11:41,182 INFO L226 Difference]: Without dead ends: 2133 [2021-11-03 04:11:41,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:11:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-03 04:11:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1778. [2021-11-03 04:11:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 1.1418120427687113) internal successors, (2029), 1777 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2029 transitions. [2021-11-03 04:11:41,235 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2029 transitions. Word has length 255 [2021-11-03 04:11:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:41,235 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2029 transitions. [2021-11-03 04:11:41,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2029 transitions. [2021-11-03 04:11:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-03 04:11:41,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:41,243 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:41,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:41,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 04:11:41,468 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -791200203, now seen corresponding path program 1 times [2021-11-03 04:11:41,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:11:41,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703991782] [2021-11-03 04:11:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:41,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:11:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-03 04:11:41,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:11:41,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703991782] [2021-11-03 04:11:41,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703991782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:41,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:41,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:11:41,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152618531] [2021-11-03 04:11:41,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:41,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:11:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:41,592 INFO L87 Difference]: Start difference. First operand 1778 states and 2029 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:41,851 INFO L93 Difference]: Finished difference Result 3056 states and 3513 transitions. [2021-11-03 04:11:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2021-11-03 04:11:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:41,852 INFO L225 Difference]: With dead ends: 3056 [2021-11-03 04:11:41,853 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:11:41,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:11:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:11:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:11:41,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 267 [2021-11-03 04:11:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:41,857 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:11:41,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:11:41,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:11:41,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:11:41,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 04:11:41,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:11:41,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:41,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:41,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-03 04:11:42,318 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-03 04:11:42,319 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-03 04:11:42,320 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-03 04:11:42,321 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:11:42,322 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-03 04:11:42,323 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-03 04:11:42,323 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-03 04:11:42,323 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a7~0 1)) (.cse4 (<= ~a16~0 5)) (.cse7 (<= ~a16~0 4)) (.cse6 (= ~a17~0 1)) (.cse0 (<= ~a7~0 0)) (.cse2 (<= 14 ~a8~0)) (.cse1 (= ~a21~0 1)) (.cse5 (= ~a20~0 1))) (or (and .cse0 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1 .cse3 .cse4) (and .cse3 .cse5) (and .cse0 .cse2 .cse1 .cse4) (and .cse6 .cse3 .cse4) (and .cse0 .cse1 .cse7) (and .cse1 .cse6 .cse7 .cse5) (and .cse0 .cse1 .cse6 .cse5) (and .cse0 .cse2 .cse1 .cse5))) [2021-11-03 04:11:42,323 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-03 04:11:42,323 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-03 04:11:42,324 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-03 04:11:42,325 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-03 04:11:42,326 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a7~0 1)) (.cse4 (<= ~a16~0 5)) (.cse7 (<= ~a16~0 4)) (.cse6 (= ~a17~0 1)) (.cse0 (<= ~a7~0 0)) (.cse2 (<= 14 ~a8~0)) (.cse1 (= ~a21~0 1)) (.cse5 (= ~a20~0 1))) (or (and .cse0 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1 .cse3 .cse4) (and .cse3 .cse5) (and .cse0 .cse2 .cse1 .cse4) (and .cse6 .cse3 .cse4) (and .cse0 .cse1 .cse7) (and .cse1 .cse6 .cse7 .cse5) (and .cse0 .cse1 .cse6 .cse5) (and .cse0 .cse2 .cse1 .cse5))) [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 525) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-03 04:11:42,327 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-03 04:11:42,328 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-03 04:11:42,328 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-03 04:11:42,333 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:42,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:11:42,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:11:42 BoogieIcfgContainer [2021-11-03 04:11:42,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:11:42,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:11:42,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:11:42,352 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:11:42,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:31" (3/4) ... [2021-11-03 04:11:42,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:11:42,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-11-03 04:11:42,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-03 04:11:42,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 04:11:42,383 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:11:42,533 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:11:42,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:11:42,535 INFO L168 Benchmark]: Toolchain (without parser) took 13939.71 ms. Allocated memory was 100.7 MB in the beginning and 272.6 MB in the end (delta: 172.0 MB). Free memory was 64.2 MB in the beginning and 200.3 MB in the end (delta: -136.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,535 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:11:42,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.73 ms. Allocated memory is still 100.7 MB. Free memory was 64.1 MB in the beginning and 56.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.76 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 51.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,537 INFO L168 Benchmark]: Boogie Preprocessor took 117.74 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 51.0 MB in the beginning and 116.0 MB in the end (delta: -65.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,537 INFO L168 Benchmark]: RCFGBuilder took 1897.05 ms. Allocated memory is still 144.7 MB. Free memory was 116.5 MB in the beginning and 110.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,537 INFO L168 Benchmark]: TraceAbstraction took 10923.11 ms. Allocated memory was 144.7 MB in the beginning and 272.6 MB in the end (delta: 127.9 MB). Free memory was 110.0 MB in the beginning and 215.0 MB in the end (delta: -105.0 MB). Peak memory consumption was 134.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,538 INFO L168 Benchmark]: Witness Printer took 181.19 ms. Allocated memory is still 272.6 MB. Free memory was 215.0 MB in the beginning and 200.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:11:42,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 715.73 ms. Allocated memory is still 100.7 MB. Free memory was 64.1 MB in the beginning and 56.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.76 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 51.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.74 ms. Allocated memory was 100.7 MB in the beginning and 144.7 MB in the end (delta: 44.0 MB). Free memory was 51.0 MB in the beginning and 116.0 MB in the end (delta: -65.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1897.05 ms. Allocated memory is still 144.7 MB. Free memory was 116.5 MB in the beginning and 110.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10923.11 ms. Allocated memory was 144.7 MB in the beginning and 272.6 MB in the end (delta: 127.9 MB). Free memory was 110.0 MB in the beginning and 215.0 MB in the end (delta: -105.0 MB). Peak memory consumption was 134.1 MB. Max. memory is 16.1 GB. * Witness Printer took 181.19 ms. Allocated memory is still 272.6 MB. Free memory was 215.0 MB in the beginning and 200.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 525]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 14, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 991 SDslu, 62 SDs, 0 SdLazy, 3200 SolverSat, 803 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 897 GetRequests, 871 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1849occurred in iteration=12, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 207 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2878 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 182 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2622 NumberOfCodeBlocks, 2622 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3034 ConstructedInterpolants, 0 QuantifiedInterpolants, 10441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 887 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 3081/3276 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a7 <= 0 && a21 == 1) && 15 <= a8) || (((14 <= a8 && a21 == 1) && a7 == 1) && a16 <= 5)) || (a7 == 1 && a20 == 1)) || (((a7 <= 0 && 14 <= a8) && a21 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || ((a7 <= 0 && a21 == 1) && a16 <= 4)) || (((a21 == 1 && a17 == 1) && a16 <= 4) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a7 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a7 <= 0 && a21 == 1) && 15 <= a8) || (((14 <= a8 && a21 == 1) && a7 == 1) && a16 <= 5)) || (a7 == 1 && a20 == 1)) || (((a7 <= 0 && 14 <= a8) && a21 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || ((a7 <= 0 && a21 == 1) && a16 <= 4)) || (((a21 == 1 && a17 == 1) && a16 <= 4) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a7 <= 0 && 14 <= a8) && a21 == 1) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:11:42,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6caf77-43b2-4d43-a15c-91d693801cd4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE