./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label39.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label39.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b35ebac14d675485534a7c769439016d2f7efb28 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:00:37,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:00:37,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:00:37,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:00:37,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:00:37,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:00:37,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:00:37,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:00:37,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:00:37,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:00:37,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:00:37,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:00:37,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:00:37,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:00:37,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:00:37,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:00:37,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:00:37,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:00:37,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:00:37,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:00:37,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:00:37,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:00:37,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:00:37,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:00:37,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:00:37,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:00:37,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:00:37,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:00:37,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:00:37,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:00:37,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:00:37,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:00:37,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:00:37,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:00:37,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:00:37,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:00:37,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:00:37,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:00:37,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:00:37,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:00:37,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:00:37,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:00:37,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:00:37,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:00:37,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:00:37,258 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:00:37,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:00:37,259 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:00:37,260 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:00:37,260 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:00:37,260 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:00:37,260 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:00:37,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:00:37,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:00:37,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:00:37,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:37,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:00:37,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:00:37,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:00:37,264 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b35ebac14d675485534a7c769439016d2f7efb28 [2020-12-09 10:00:37,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:00:37,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:00:37,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:00:37,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:00:37,468 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:00:37,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2020-12-09 10:00:37,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/data/61c50f9a3/45589668f9fe404792439c3253594d43/FLAG7e1598f96 [2020-12-09 10:00:37,938 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:00:37,938 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2020-12-09 10:00:37,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/data/61c50f9a3/45589668f9fe404792439c3253594d43/FLAG7e1598f96 [2020-12-09 10:00:37,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/data/61c50f9a3/45589668f9fe404792439c3253594d43 [2020-12-09 10:00:37,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:00:37,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:00:37,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:37,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:00:37,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:00:37,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:37" (1/1) ... [2020-12-09 10:00:37,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e1e0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:37, skipping insertion in model container [2020-12-09 10:00:37,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:37" (1/1) ... [2020-12-09 10:00:37,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:00:38,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:00:38,221 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/sv-benchmarks/c/eca-rers2012/Problem01_label39.c[21959,21972] [2020-12-09 10:00:38,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:38,237 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:00:38,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/sv-benchmarks/c/eca-rers2012/Problem01_label39.c[21959,21972] [2020-12-09 10:00:38,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:38,329 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:00:38,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38 WrapperNode [2020-12-09 10:00:38,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:38,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:38,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:00:38,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:00:38,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:00:38,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:00:38,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:00:38,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:00:38,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... [2020-12-09 10:00:38,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:00:38,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:00:38,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:00:38,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:00:38,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:00:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:00:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:00:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:00:39,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:00:39,700 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:00:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:39 BoogieIcfgContainer [2020-12-09 10:00:39,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:00:39,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:00:39,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:00:39,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:00:39,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:00:37" (1/3) ... [2020-12-09 10:00:39,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:39, skipping insertion in model container [2020-12-09 10:00:39,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:38" (2/3) ... [2020-12-09 10:00:39,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:00:39, skipping insertion in model container [2020-12-09 10:00:39,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:39" (3/3) ... [2020-12-09 10:00:39,708 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-12-09 10:00:39,717 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:00:39,720 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:00:39,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:00:39,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:00:39,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:00:39,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:00:39,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:00:39,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:00:39,743 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:00:39,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:00:39,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:00:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 10:00:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 10:00:39,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:39,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:39,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1806903896, now seen corresponding path program 1 times [2020-12-09 10:00:39,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:39,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157071370] [2020-12-09 10:00:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:40,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157071370] [2020-12-09 10:00:40,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:40,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:40,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693175143] [2020-12-09 10:00:40,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:40,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:40,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:40,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,024 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 10:00:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:40,327 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 10:00:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:40,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 10:00:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:40,336 INFO L225 Difference]: With dead ends: 224 [2020-12-09 10:00:40,336 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 10:00:40,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 10:00:40,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 10:00:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 10:00:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 10:00:40,371 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 10:00:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:40,372 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 10:00:40,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 10:00:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 10:00:40,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:40,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:40,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:00:40,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1694604350, now seen corresponding path program 1 times [2020-12-09 10:00:40,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:40,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270848251] [2020-12-09 10:00:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:40,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270848251] [2020-12-09 10:00:40,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:40,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:40,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007242511] [2020-12-09 10:00:40,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:40,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:40,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:40,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,419 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 10:00:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:40,655 INFO L93 Difference]: Finished difference Result 433 states and 775 transitions. [2020-12-09 10:00:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:40,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 10:00:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:40,658 INFO L225 Difference]: With dead ends: 433 [2020-12-09 10:00:40,658 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 10:00:40,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 10:00:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-12-09 10:00:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 10:00:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2020-12-09 10:00:40,678 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2020-12-09 10:00:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:40,678 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2020-12-09 10:00:40,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2020-12-09 10:00:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 10:00:40,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:40,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:40,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:00:40,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash 348749876, now seen corresponding path program 1 times [2020-12-09 10:00:40,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:40,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842606409] [2020-12-09 10:00:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:40,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842606409] [2020-12-09 10:00:40,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:40,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:40,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986012897] [2020-12-09 10:00:40,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:40,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:40,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,746 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand 3 states. [2020-12-09 10:00:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:40,986 INFO L93 Difference]: Finished difference Result 857 states and 1437 transitions. [2020-12-09 10:00:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:40,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 10:00:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:40,989 INFO L225 Difference]: With dead ends: 857 [2020-12-09 10:00:40,989 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 10:00:40,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 10:00:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 10:00:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 10:00:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 886 transitions. [2020-12-09 10:00:41,022 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 886 transitions. Word has length 80 [2020-12-09 10:00:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:41,023 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 886 transitions. [2020-12-09 10:00:41,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 886 transitions. [2020-12-09 10:00:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 10:00:41,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:41,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:41,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:00:41,027 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash -143894451, now seen corresponding path program 1 times [2020-12-09 10:00:41,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:41,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678431577] [2020-12-09 10:00:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:41,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678431577] [2020-12-09 10:00:41,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:41,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:41,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7117740] [2020-12-09 10:00:41,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:41,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:41,099 INFO L87 Difference]: Start difference. First operand 571 states and 886 transitions. Second operand 4 states. [2020-12-09 10:00:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:41,430 INFO L93 Difference]: Finished difference Result 1425 states and 2187 transitions. [2020-12-09 10:00:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:00:41,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 10:00:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:41,434 INFO L225 Difference]: With dead ends: 1425 [2020-12-09 10:00:41,435 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 10:00:41,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 10:00:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-12-09 10:00:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 10:00:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1058 transitions. [2020-12-09 10:00:41,459 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1058 transitions. Word has length 83 [2020-12-09 10:00:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:41,459 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1058 transitions. [2020-12-09 10:00:41,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1058 transitions. [2020-12-09 10:00:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 10:00:41,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:41,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:41,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:00:41,462 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1756794500, now seen corresponding path program 1 times [2020-12-09 10:00:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:41,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480980619] [2020-12-09 10:00:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:41,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480980619] [2020-12-09 10:00:41,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:41,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:41,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100221563] [2020-12-09 10:00:41,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:41,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:41,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:41,513 INFO L87 Difference]: Start difference. First operand 713 states and 1058 transitions. Second operand 3 states. [2020-12-09 10:00:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:41,792 INFO L93 Difference]: Finished difference Result 1922 states and 2892 transitions. [2020-12-09 10:00:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:41,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 10:00:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:41,799 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 10:00:41,799 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:00:41,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:00:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2020-12-09 10:00:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 10:00:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1512 transitions. [2020-12-09 10:00:41,832 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1512 transitions. Word has length 84 [2020-12-09 10:00:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:41,832 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1512 transitions. [2020-12-09 10:00:41,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1512 transitions. [2020-12-09 10:00:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 10:00:41,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:41,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:41,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:00:41,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -358255574, now seen corresponding path program 1 times [2020-12-09 10:00:41,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:41,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923383078] [2020-12-09 10:00:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:41,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923383078] [2020-12-09 10:00:41,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:41,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:41,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379783673] [2020-12-09 10:00:41,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:41,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:41,871 INFO L87 Difference]: Start difference. First operand 997 states and 1512 transitions. Second operand 3 states. [2020-12-09 10:00:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:42,119 INFO L93 Difference]: Finished difference Result 2206 states and 3309 transitions. [2020-12-09 10:00:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:42,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 10:00:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:42,124 INFO L225 Difference]: With dead ends: 2206 [2020-12-09 10:00:42,125 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:00:42,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:00:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 10:00:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 10:00:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1744 transitions. [2020-12-09 10:00:42,148 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1744 transitions. Word has length 84 [2020-12-09 10:00:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:42,148 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1744 transitions. [2020-12-09 10:00:42,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1744 transitions. [2020-12-09 10:00:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 10:00:42,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:42,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:42,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:00:42,150 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:42,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1140296667, now seen corresponding path program 1 times [2020-12-09 10:00:42,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:42,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637165805] [2020-12-09 10:00:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637165805] [2020-12-09 10:00:42,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:42,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973613691] [2020-12-09 10:00:42,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:42,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:42,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:42,183 INFO L87 Difference]: Start difference. First operand 1210 states and 1744 transitions. Second operand 3 states. [2020-12-09 10:00:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:42,418 INFO L93 Difference]: Finished difference Result 2490 states and 3576 transitions. [2020-12-09 10:00:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:42,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 10:00:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:42,424 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 10:00:42,424 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 10:00:42,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 10:00:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-12-09 10:00:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 10:00:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1482 transitions. [2020-12-09 10:00:42,457 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1482 transitions. Word has length 86 [2020-12-09 10:00:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:42,457 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1482 transitions. [2020-12-09 10:00:42,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1482 transitions. [2020-12-09 10:00:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-09 10:00:42,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:42,460 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:42,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:00:42,460 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1572569458, now seen corresponding path program 1 times [2020-12-09 10:00:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:42,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868843600] [2020-12-09 10:00:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:00:42,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868843600] [2020-12-09 10:00:42,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:42,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:42,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645905437] [2020-12-09 10:00:42,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:42,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:42,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:42,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:42,510 INFO L87 Difference]: Start difference. First operand 1139 states and 1482 transitions. Second operand 3 states. [2020-12-09 10:00:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:42,716 INFO L93 Difference]: Finished difference Result 2348 states and 3049 transitions. [2020-12-09 10:00:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:42,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-09 10:00:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:42,721 INFO L225 Difference]: With dead ends: 2348 [2020-12-09 10:00:42,722 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:00:42,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:00:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 10:00:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 10:00:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1498 transitions. [2020-12-09 10:00:42,742 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1498 transitions. Word has length 88 [2020-12-09 10:00:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:42,742 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1498 transitions. [2020-12-09 10:00:42,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1498 transitions. [2020-12-09 10:00:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-09 10:00:42,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:42,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:42,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:00:42,743 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:42,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1043312787, now seen corresponding path program 1 times [2020-12-09 10:00:42,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:42,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405280566] [2020-12-09 10:00:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:42,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405280566] [2020-12-09 10:00:42,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:42,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:42,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927353267] [2020-12-09 10:00:42,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:42,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:42,784 INFO L87 Difference]: Start difference. First operand 1210 states and 1498 transitions. Second operand 4 states. [2020-12-09 10:00:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:43,073 INFO L93 Difference]: Finished difference Result 2419 states and 2995 transitions. [2020-12-09 10:00:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:00:43,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-09 10:00:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:43,078 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 10:00:43,078 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:00:43,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:00:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 10:00:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 10:00:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1477 transitions. [2020-12-09 10:00:43,097 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1477 transitions. Word has length 90 [2020-12-09 10:00:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:43,097 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1477 transitions. [2020-12-09 10:00:43,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:43,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1477 transitions. [2020-12-09 10:00:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 10:00:43,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:43,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:43,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 10:00:43,099 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1202879470, now seen corresponding path program 1 times [2020-12-09 10:00:43,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:43,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673597991] [2020-12-09 10:00:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 10:00:43,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673597991] [2020-12-09 10:00:43,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:43,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:00:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099526047] [2020-12-09 10:00:43,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:43,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:43,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:43,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:43,161 INFO L87 Difference]: Start difference. First operand 1210 states and 1477 transitions. Second operand 3 states. [2020-12-09 10:00:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:43,380 INFO L93 Difference]: Finished difference Result 2774 states and 3400 transitions. [2020-12-09 10:00:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:43,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 10:00:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:43,386 INFO L225 Difference]: With dead ends: 2774 [2020-12-09 10:00:43,386 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 10:00:43,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 10:00:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2020-12-09 10:00:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-12-09 10:00:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1810 transitions. [2020-12-09 10:00:43,408 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1810 transitions. Word has length 108 [2020-12-09 10:00:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:43,409 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1810 transitions. [2020-12-09 10:00:43,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1810 transitions. [2020-12-09 10:00:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-09 10:00:43,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:43,411 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-09 10:00:43,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 10:00:43,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1110346781, now seen corresponding path program 1 times [2020-12-09 10:00:43,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:43,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774646296] [2020-12-09 10:00:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:00:43,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774646296] [2020-12-09 10:00:43,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780110291] [2020-12-09 10:00:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:00:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:00:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:00:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 10:00:43,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:00:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 10:00:43,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:00:43,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 10:00:43,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556047583] [2020-12-09 10:00:43,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:43,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:43,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:43,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:43,819 INFO L87 Difference]: Start difference. First operand 1494 states and 1810 transitions. Second operand 3 states. [2020-12-09 10:00:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:44,028 INFO L93 Difference]: Finished difference Result 3484 states and 4286 transitions. [2020-12-09 10:00:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:44,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-09 10:00:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:44,035 INFO L225 Difference]: With dead ends: 3484 [2020-12-09 10:00:44,035 INFO L226 Difference]: Without dead ends: 1991 [2020-12-09 10:00:44,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-12-09 10:00:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1849. [2020-12-09 10:00:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2020-12-09 10:00:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2240 transitions. [2020-12-09 10:00:44,073 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2240 transitions. Word has length 134 [2020-12-09 10:00:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:44,074 INFO L481 AbstractCegarLoop]: Abstraction has 1849 states and 2240 transitions. [2020-12-09 10:00:44,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2240 transitions. [2020-12-09 10:00:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-09 10:00:44,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:44,078 INFO L422 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, 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] [2020-12-09 10:00:44,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 10:00:44,279 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:44,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1216267738, now seen corresponding path program 1 times [2020-12-09 10:00:44,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:44,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324734240] [2020-12-09 10:00:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 10:00:44,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324734240] [2020-12-09 10:00:44,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:44,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:44,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082688509] [2020-12-09 10:00:44,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:00:44,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:00:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:44,472 INFO L87 Difference]: Start difference. First operand 1849 states and 2240 transitions. Second operand 4 states. [2020-12-09 10:00:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:44,819 INFO L93 Difference]: Finished difference Result 3910 states and 4711 transitions. [2020-12-09 10:00:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:00:44,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-09 10:00:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:44,828 INFO L225 Difference]: With dead ends: 3910 [2020-12-09 10:00:44,828 INFO L226 Difference]: Without dead ends: 2062 [2020-12-09 10:00:44,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:00:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-12-09 10:00:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1139. [2020-12-09 10:00:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 10:00:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1347 transitions. [2020-12-09 10:00:44,859 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1347 transitions. Word has length 151 [2020-12-09 10:00:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:44,859 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1347 transitions. [2020-12-09 10:00:44,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:00:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1347 transitions. [2020-12-09 10:00:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-09 10:00:44,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:44,862 INFO L422 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, 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] [2020-12-09 10:00:44,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 10:00:44,862 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2109691204, now seen corresponding path program 1 times [2020-12-09 10:00:44,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:44,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301841253] [2020-12-09 10:00:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 10:00:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301841253] [2020-12-09 10:00:44,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:44,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:00:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167346007] [2020-12-09 10:00:44,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:00:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:00:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:44,991 INFO L87 Difference]: Start difference. First operand 1139 states and 1347 transitions. Second operand 5 states. [2020-12-09 10:00:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:45,307 INFO L93 Difference]: Finished difference Result 2454 states and 2881 transitions. [2020-12-09 10:00:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:00:45,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-12-09 10:00:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:45,312 INFO L225 Difference]: With dead ends: 2454 [2020-12-09 10:00:45,312 INFO L226 Difference]: Without dead ends: 1316 [2020-12-09 10:00:45,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:00:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-12-09 10:00:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1210. [2020-12-09 10:00:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 10:00:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1399 transitions. [2020-12-09 10:00:45,331 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1399 transitions. Word has length 194 [2020-12-09 10:00:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:45,331 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1399 transitions. [2020-12-09 10:00:45,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:00:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1399 transitions. [2020-12-09 10:00:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-09 10:00:45,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:45,334 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:45,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 10:00:45,334 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:45,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1996120037, now seen corresponding path program 1 times [2020-12-09 10:00:45,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:45,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502419234] [2020-12-09 10:00:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-12-09 10:00:45,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502419234] [2020-12-09 10:00:45,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:00:45,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:00:45,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920888281] [2020-12-09 10:00:45,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:45,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:45,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:45,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:45,419 INFO L87 Difference]: Start difference. First operand 1210 states and 1399 transitions. Second operand 3 states. [2020-12-09 10:00:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:45,643 INFO L93 Difference]: Finished difference Result 2419 states and 2797 transitions. [2020-12-09 10:00:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:45,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-12-09 10:00:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:45,649 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 10:00:45,649 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:00:45,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:00:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:00:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-12-09 10:00:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 10:00:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1292 transitions. [2020-12-09 10:00:45,670 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1292 transitions. Word has length 207 [2020-12-09 10:00:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:45,671 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1292 transitions. [2020-12-09 10:00:45,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1292 transitions. [2020-12-09 10:00:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-09 10:00:45,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:00:45,674 INFO L422 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:00:45,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 10:00:45,674 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:00:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:00:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash 236751949, now seen corresponding path program 1 times [2020-12-09 10:00:45,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:00:45,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599295905] [2020-12-09 10:00:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:00:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 10:00:45,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599295905] [2020-12-09 10:00:45,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824136936] [2020-12-09 10:00:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:00:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:00:46,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:00:46,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:00:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 10:00:46,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:00:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 10:00:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:00:46,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 10:00:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668780625] [2020-12-09 10:00:46,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:00:46,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:00:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:00:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:46,319 INFO L87 Difference]: Start difference. First operand 1139 states and 1292 transitions. Second operand 3 states. [2020-12-09 10:00:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:00:46,484 INFO L93 Difference]: Finished difference Result 1352 states and 1521 transitions. [2020-12-09 10:00:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:00:46,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-12-09 10:00:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:00:46,484 INFO L225 Difference]: With dead ends: 1352 [2020-12-09 10:00:46,484 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:00:46,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:00:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:00:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:00:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:00:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:00:46,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2020-12-09 10:00:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:00:46,486 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:00:46,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:00:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:00:46,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:00:46,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-09 10:00:46,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:00:46,949 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-12-09 10:00:47,063 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 10:00:47,065 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-12-09 10:00:47,066 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 4)) (.cse5 (= ~a21~0 1)) (.cse3 (= ~a20~0 1)) (.cse6 (<= 15 ~a8~0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse3 .cse1) (and .cse5 (<= ~a7~0 0) .cse3 .cse1) (and (<= 14 ~a8~0) .cse5 .cse4) (and .cse5 .cse2 .cse6) (and .cse5 .cse0) (and .cse0 .cse3) (and .cse5 .cse3 .cse6))) [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 10:00:47,067 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (<= ~a16~0 4)) (.cse5 (= ~a21~0 1)) (.cse3 (= ~a20~0 1)) (.cse6 (<= 15 ~a8~0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse3 .cse1) (and .cse5 (<= ~a7~0 0) .cse3 .cse1) (and (<= 14 ~a8~0) .cse5 .cse4) (and .cse5 .cse2 .cse6) (and .cse5 .cse0) (and .cse0 .cse3) (and .cse5 .cse3 .cse6))) [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 582) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 10:00:47,068 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 10:00:47,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:00:47 BoogieIcfgContainer [2020-12-09 10:00:47,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:00:47,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:00:47,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:00:47,085 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:00:47,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:00:39" (3/4) ... [2020-12-09 10:00:47,088 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:00:47,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 10:00:47,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 10:00:47,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 10:00:47,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 10:00:47,198 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd483c4b-df8c-414e-b6af-f5c315370d5f/bin/utaipan/witness.graphml [2020-12-09 10:00:47,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:00:47,199 INFO L168 Benchmark]: Toolchain (without parser) took 9239.09 ms. Allocated memory was 104.9 MB in the beginning and 339.7 MB in the end (delta: 234.9 MB). Free memory was 74.1 MB in the beginning and 168.2 MB in the end (delta: -94.0 MB). Peak memory consumption was 142.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,199 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 84.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:00:47,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.77 ms. Allocated memory is still 104.9 MB. Free memory was 74.0 MB in the beginning and 79.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 104.9 MB. Free memory was 79.9 MB in the beginning and 74.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,200 INFO L168 Benchmark]: Boogie Preprocessor took 43.81 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 69.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,200 INFO L168 Benchmark]: RCFGBuilder took 1271.87 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 69.3 MB in the beginning and 120.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,200 INFO L168 Benchmark]: TraceAbstraction took 7381.28 ms. Allocated memory was 161.5 MB in the beginning and 339.7 MB in the end (delta: 178.3 MB). Free memory was 119.7 MB in the beginning and 182.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,200 INFO L168 Benchmark]: Witness Printer took 113.27 ms. Allocated memory is still 339.7 MB. Free memory was 182.8 MB in the beginning and 168.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:47,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 104.9 MB. Free memory is still 84.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.77 ms. Allocated memory is still 104.9 MB. Free memory was 74.0 MB in the beginning and 79.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 104.9 MB. Free memory was 79.9 MB in the beginning and 74.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.81 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 69.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1271.87 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 69.3 MB in the beginning and 120.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7381.28 ms. Allocated memory was 161.5 MB in the beginning and 339.7 MB in the end (delta: 178.3 MB). Free memory was 119.7 MB in the beginning and 182.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.1 GB. * Witness Printer took 113.27 ms. Allocated memory is still 339.7 MB. Free memory was 182.8 MB in the beginning and 168.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 582]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a16 <= 4 && a17 == 1) || (a16 == 6 && a20 == 1)) || ((a16 <= 5 && a20 == 1) && a17 == 1)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((14 <= a8 && a21 == 1) && a16 <= 5)) || ((a21 == 1 && a16 == 6) && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || (a16 <= 4 && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a16 <= 4 && a17 == 1) || (a16 == 6 && a20 == 1)) || ((a16 <= 5 && a20 == 1) && a17 == 1)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((14 <= a8 && a21 == 1) && a16 <= 5)) || ((a21 == 1 && a16 == 6) && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || (a16 <= 4 && a20 == 1)) || ((a21 == 1 && a20 == 1) && 15 <= a8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 15, TraceHistogramMax: 6, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 725 SDtfs, 1169 SDslu, 90 SDs, 0 SdLazy, 3459 SolverSat, 873 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 739 GetRequests, 712 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1849occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 1670 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 165 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4556 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 556 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2102 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2433 ConstructedInterpolants, 0 QuantifiedInterpolants, 1177690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 845 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 1751/1850 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...