./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.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_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/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 b174e1814bd9b57d51be1f924645d02065497326 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:19:41,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:19:41,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:19:41,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:19:41,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:19:41,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:19:41,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:19:41,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:19:41,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:19:41,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:19:41,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:19:41,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:19:41,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:19:41,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:19:41,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:19:41,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:19:41,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:19:41,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:19:41,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:19:41,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:19:41,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:19:41,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:19:41,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:19:41,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:19:41,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:19:41,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:19:41,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:19:41,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:19:41,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:19:41,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:19:41,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:19:41,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:19:41,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:19:41,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:19:41,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:19:41,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:19:41,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:19:41,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:19:41,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:19:41,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:19:41,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:19:41,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:19:41,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:19:41,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:19:41,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:19:41,202 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:19:41,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:19:41,211 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:19:41,212 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:19:41,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:19:41,213 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:19:41,213 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:19:41,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:19:41,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:19:41,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:19:41,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:19:41,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:19:41,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:19:41,216 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_a626b9f9-3cdd-4476-b453-fc926677c2cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b174e1814bd9b57d51be1f924645d02065497326 [2020-12-09 05:19:41,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:19:41,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:19:41,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:19:41,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:19:41,432 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:19:41,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2020-12-09 05:19:41,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/data/ef38fb4b7/54b60deff04b422b869eb3630c81e07e/FLAGafa109cc4 [2020-12-09 05:19:41,879 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:19:41,880 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/sv-benchmarks/c/eca-rers2012/Problem01_label41.c [2020-12-09 05:19:41,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/data/ef38fb4b7/54b60deff04b422b869eb3630c81e07e/FLAGafa109cc4 [2020-12-09 05:19:42,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/data/ef38fb4b7/54b60deff04b422b869eb3630c81e07e [2020-12-09 05:19:42,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:19:42,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:19:42,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:19:42,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:19:42,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:19:42,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18187218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42, skipping insertion in model container [2020-12-09 05:19:42,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:19:42,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:19:42,511 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_a626b9f9-3cdd-4476-b453-fc926677c2cd/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2020-12-09 05:19:42,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:19:42,548 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:19:42,617 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_a626b9f9-3cdd-4476-b453-fc926677c2cd/sv-benchmarks/c/eca-rers2012/Problem01_label41.c[16127,16140] [2020-12-09 05:19:42,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:19:42,644 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:19:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42 WrapperNode [2020-12-09 05:19:42,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:19:42,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:19:42,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:19:42,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:19:42,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:19:42,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:19:42,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:19:42,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:19:42,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... [2020-12-09 05:19:42,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:19:42,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:19:42,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:19:42,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:19:42,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/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 05:19:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:19:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:19:42,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:19:44,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:19:44,024 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:19:44,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:19:44 BoogieIcfgContainer [2020-12-09 05:19:44,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:19:44,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:19:44,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:19:44,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:19:44,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:19:42" (1/3) ... [2020-12-09 05:19:44,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1556f9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:19:44, skipping insertion in model container [2020-12-09 05:19:44,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:19:42" (2/3) ... [2020-12-09 05:19:44,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1556f9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:19:44, skipping insertion in model container [2020-12-09 05:19:44,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:19:44" (3/3) ... [2020-12-09 05:19:44,034 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-12-09 05:19:44,047 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:19:44,050 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:19:44,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:19:44,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:19:44,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:19:44,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:19:44,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:19:44,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:19:44,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:19:44,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:19:44,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:19:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 05:19:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 05:19:44,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:44,098 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 05:19:44,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:44,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1806915928, now seen corresponding path program 1 times [2020-12-09 05:19:44,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:44,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618933623] [2020-12-09 05:19:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:44,346 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 05:19:44,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618933623] [2020-12-09 05:19:44,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:44,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:19:44,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978444767] [2020-12-09 05:19:44,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:44,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:44,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:44,362 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 05:19:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:44,684 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 05:19:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:44,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 05:19:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:44,693 INFO L225 Difference]: With dead ends: 224 [2020-12-09 05:19:44,693 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 05:19:44,696 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 05:19:44,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 05:19:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 05:19:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 05:19:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 05:19:44,730 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 05:19:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:44,730 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 05:19:44,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 05:19:44,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 05:19:44,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:44,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:44,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:19:44,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:44,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1034860421, now seen corresponding path program 1 times [2020-12-09 05:19:44,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:44,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435263503] [2020-12-09 05:19:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:19:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435263503] [2020-12-09 05:19:44,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:19:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545345371] [2020-12-09 05:19:44,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:44,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:44,777 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 05:19:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:45,038 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 05:19:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:45,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 05:19:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:45,041 INFO L225 Difference]: With dead ends: 431 [2020-12-09 05:19:45,041 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 05:19:45,042 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 05:19:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 05:19:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 05:19:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 05:19:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-12-09 05:19:45,057 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2020-12-09 05:19:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:45,058 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-12-09 05:19:45,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-12-09 05:19:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 05:19:45,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:45,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:45,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:19:45,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 525291478, now seen corresponding path program 1 times [2020-12-09 05:19:45,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:45,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110896530] [2020-12-09 05:19:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:19:45,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110896530] [2020-12-09 05:19:45,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:45,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:19:45,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054360395] [2020-12-09 05:19:45,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:19:45,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:19:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:19:45,142 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-12-09 05:19:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:45,543 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-12-09 05:19:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:19:45,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-09 05:19:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:45,547 INFO L225 Difference]: With dead ends: 715 [2020-12-09 05:19:45,547 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 05:19:45,549 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 05:19:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 05:19:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-12-09 05:19:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 05:19:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-12-09 05:19:45,571 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-12-09 05:19:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:45,571 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-12-09 05:19:45,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:19:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-12-09 05:19:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-09 05:19:45,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:45,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:45,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:19:45,573 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash -863069664, now seen corresponding path program 1 times [2020-12-09 05:19:45,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:45,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50406982] [2020-12-09 05:19:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 05:19:45,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50406982] [2020-12-09 05:19:45,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:45,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:19:45,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101883445] [2020-12-09 05:19:45,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:45,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:45,626 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-12-09 05:19:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:45,860 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-12-09 05:19:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:45,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-09 05:19:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:45,863 INFO L225 Difference]: With dead ends: 999 [2020-12-09 05:19:45,864 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 05:19:45,864 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 05:19:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 05:19:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-12-09 05:19:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 05:19:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-12-09 05:19:45,874 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-12-09 05:19:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:45,874 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-12-09 05:19:45,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-12-09 05:19:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 05:19:45,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:45,876 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:45,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:19:45,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1821412824, now seen corresponding path program 1 times [2020-12-09 05:19:45,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:45,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118278277] [2020-12-09 05:19:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 05:19:45,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118278277] [2020-12-09 05:19:45,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:45,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:19:45,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173789860] [2020-12-09 05:19:45,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:45,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:45,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:45,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:45,922 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 3 states. [2020-12-09 05:19:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:46,155 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2020-12-09 05:19:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:46,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 05:19:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:46,158 INFO L225 Difference]: With dead ends: 1070 [2020-12-09 05:19:46,159 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 05:19:46,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 05:19:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 05:19:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 05:19:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 711 transitions. [2020-12-09 05:19:46,170 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 711 transitions. Word has length 113 [2020-12-09 05:19:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:46,170 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 711 transitions. [2020-12-09 05:19:46,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 711 transitions. [2020-12-09 05:19:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-09 05:19:46,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:46,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:46,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:19:46,172 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1123305740, now seen corresponding path program 1 times [2020-12-09 05:19:46,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:46,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075385671] [2020-12-09 05:19:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-09 05:19:46,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075385671] [2020-12-09 05:19:46,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:46,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:19:46,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443594906] [2020-12-09 05:19:46,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:46,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:46,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:46,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:46,217 INFO L87 Difference]: Start difference. First operand 571 states and 711 transitions. Second operand 3 states. [2020-12-09 05:19:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:46,468 INFO L93 Difference]: Finished difference Result 1496 states and 1860 transitions. [2020-12-09 05:19:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:46,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-09 05:19:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:46,474 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 05:19:46,474 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 05:19:46,475 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 05:19:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 05:19:46,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-12-09 05:19:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 05:19:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 889 transitions. [2020-12-09 05:19:46,491 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 889 transitions. Word has length 122 [2020-12-09 05:19:46,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:46,491 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 889 transitions. [2020-12-09 05:19:46,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 889 transitions. [2020-12-09 05:19:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-09 05:19:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:46,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:46,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:19:46,495 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1134302458, now seen corresponding path program 1 times [2020-12-09 05:19:46,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:46,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542199101] [2020-12-09 05:19:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-09 05:19:46,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542199101] [2020-12-09 05:19:46,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:46,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:19:46,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008484381] [2020-12-09 05:19:46,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:46,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:19:46,569 INFO L87 Difference]: Start difference. First operand 713 states and 889 transitions. Second operand 3 states. [2020-12-09 05:19:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:46,805 INFO L93 Difference]: Finished difference Result 1567 states and 1960 transitions. [2020-12-09 05:19:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:46,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-09 05:19:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:46,810 INFO L225 Difference]: With dead ends: 1567 [2020-12-09 05:19:46,810 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 05:19:46,811 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 05:19:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 05:19:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-12-09 05:19:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 05:19:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1056 transitions. [2020-12-09 05:19:46,833 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1056 transitions. Word has length 138 [2020-12-09 05:19:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:46,834 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1056 transitions. [2020-12-09 05:19:46,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1056 transitions. [2020-12-09 05:19:46,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 05:19:46,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:46,837 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:19:46,837 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2113814436, now seen corresponding path program 1 times [2020-12-09 05:19:46,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:46,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827764682] [2020-12-09 05:19:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-09 05:19:46,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827764682] [2020-12-09 05:19:46,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:19:46,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:19:46,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883670272] [2020-12-09 05:19:46,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:19:46,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:46,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:19:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:19:46,927 INFO L87 Difference]: Start difference. First operand 855 states and 1056 transitions. Second operand 4 states. [2020-12-09 05:19:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:47,268 INFO L93 Difference]: Finished difference Result 1851 states and 2308 transitions. [2020-12-09 05:19:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:19:47,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-09 05:19:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:47,272 INFO L225 Difference]: With dead ends: 1851 [2020-12-09 05:19:47,272 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 05:19:47,273 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 05:19:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 05:19:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-12-09 05:19:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 05:19:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-12-09 05:19:47,290 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-12-09 05:19:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:47,290 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-12-09 05:19:47,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:19:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-12-09 05:19:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 05:19:47,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:47,292 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:47,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:19:47,293 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1461374871, now seen corresponding path program 1 times [2020-12-09 05:19:47,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:47,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640405892] [2020-12-09 05:19:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-09 05:19:47,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640405892] [2020-12-09 05:19:47,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576728115] [2020-12-09 05:19:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/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 05:19:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:47,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:19:47,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:19:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 05:19:47,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:19:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 05:19:47,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:19:47,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 05:19:47,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330181041] [2020-12-09 05:19:47,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:47,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:47,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:47,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:19:47,762 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-12-09 05:19:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:48,001 INFO L93 Difference]: Finished difference Result 1993 states and 2459 transitions. [2020-12-09 05:19:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:48,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 05:19:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:48,007 INFO L225 Difference]: With dead ends: 1993 [2020-12-09 05:19:48,008 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 05:19:48,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 340 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 05:19:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 05:19:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-12-09 05:19:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 05:19:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1099 transitions. [2020-12-09 05:19:48,030 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1099 transitions. Word has length 171 [2020-12-09 05:19:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:48,031 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1099 transitions. [2020-12-09 05:19:48,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1099 transitions. [2020-12-09 05:19:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-09 05:19:48,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:48,033 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:48,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 05:19:48,234 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash 45889626, now seen corresponding path program 1 times [2020-12-09 05:19:48,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:48,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959709669] [2020-12-09 05:19:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 125 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-09 05:19:48,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959709669] [2020-12-09 05:19:48,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083235674] [2020-12-09 05:19:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/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 05:19:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:48,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:19:48,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:19:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-09 05:19:48,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:19:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-09 05:19:48,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:19:48,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 05:19:48,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129611403] [2020-12-09 05:19:48,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:48,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:48,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:48,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:19:48,667 INFO L87 Difference]: Start difference. First operand 926 states and 1099 transitions. Second operand 3 states. [2020-12-09 05:19:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:48,871 INFO L93 Difference]: Finished difference Result 2135 states and 2557 transitions. [2020-12-09 05:19:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:48,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-12-09 05:19:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:48,878 INFO L225 Difference]: With dead ends: 2135 [2020-12-09 05:19:48,878 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 05:19:48,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 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 05:19:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 05:19:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-12-09 05:19:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 05:19:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1276 transitions. [2020-12-09 05:19:48,900 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1276 transitions. Word has length 177 [2020-12-09 05:19:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:48,901 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1276 transitions. [2020-12-09 05:19:48,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1276 transitions. [2020-12-09 05:19:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-09 05:19:48,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:48,904 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 05:19:49,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 05:19:49,105 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash 165805734, now seen corresponding path program 1 times [2020-12-09 05:19:49,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:49,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368932669] [2020-12-09 05:19:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 160 proven. 11 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-12-09 05:19:49,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368932669] [2020-12-09 05:19:49,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819537487] [2020-12-09 05:19:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:19:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:49,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:19:49,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:19:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 05:19:49,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:19:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-09 05:19:49,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:19:49,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 05:19:49,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47645645] [2020-12-09 05:19:49,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:19:49,570 INFO L87 Difference]: Start difference. First operand 1068 states and 1276 transitions. Second operand 3 states. [2020-12-09 05:19:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:49,774 INFO L93 Difference]: Finished difference Result 2632 states and 3129 transitions. [2020-12-09 05:19:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:49,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2020-12-09 05:19:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:49,780 INFO L225 Difference]: With dead ends: 2632 [2020-12-09 05:19:49,780 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 05:19:49,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 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 05:19:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 05:19:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1494. [2020-12-09 05:19:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-12-09 05:19:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-12-09 05:19:49,800 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 198 [2020-12-09 05:19:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:49,800 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-12-09 05:19:49,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-12-09 05:19:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-09 05:19:49,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:49,804 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:19:50,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 05:19:50,006 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:50,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1798710024, now seen corresponding path program 1 times [2020-12-09 05:19:50,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:50,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113258321] [2020-12-09 05:19:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 181 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 05:19:50,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113258321] [2020-12-09 05:19:50,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875149101] [2020-12-09 05:19:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:19:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:50,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:19:50,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:19:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 05:19:50,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:19:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 05:19:50,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:19:50,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 05:19:50,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087372649] [2020-12-09 05:19:50,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:19:50,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:50,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:19:50,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:19:50,536 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 3 states. [2020-12-09 05:19:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:50,742 INFO L93 Difference]: Finished difference Result 3271 states and 3842 transitions. [2020-12-09 05:19:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:19:50,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-09 05:19:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:50,748 INFO L225 Difference]: With dead ends: 3271 [2020-12-09 05:19:50,748 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 05:19:50,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:19:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 05:19:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1494. [2020-12-09 05:19:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-12-09 05:19:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1753 transitions. [2020-12-09 05:19:50,769 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1753 transitions. Word has length 217 [2020-12-09 05:19:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:50,769 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1753 transitions. [2020-12-09 05:19:50,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:19:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1753 transitions. [2020-12-09 05:19:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-09 05:19:50,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:19:50,773 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 05:19:50,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:19:50,974 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:19:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:19:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash -626119630, now seen corresponding path program 1 times [2020-12-09 05:19:50,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:19:50,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479894155] [2020-12-09 05:19:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:19:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 197 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-09 05:19:51,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479894155] [2020-12-09 05:19:51,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698097421] [2020-12-09 05:19:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:19:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:19:51,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:19:51,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:19:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-09 05:19:51,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:19:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-12-09 05:19:51,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:19:51,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 05:19:51,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831503431] [2020-12-09 05:19:51,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:19:51,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:19:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:19:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:19:51,563 INFO L87 Difference]: Start difference. First operand 1494 states and 1753 transitions. Second operand 4 states. [2020-12-09 05:19:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:19:51,937 INFO L93 Difference]: Finished difference Result 2843 states and 3306 transitions. [2020-12-09 05:19:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:19:51,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-12-09 05:19:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:19:51,938 INFO L225 Difference]: With dead ends: 2843 [2020-12-09 05:19:51,938 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:19:51,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:19:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:19:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:19:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:19:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:19:51,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2020-12-09 05:19:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:19:51,941 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:19:51,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:19:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:19:51,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:19:52,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-09 05:19:52,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:19:52,338 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-09 05:19:52,452 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-09 05:19:52,454 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 05:19:52,454 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 05:19:52,454 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 05:19:52,455 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 05:19:52,456 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 05:19:52,457 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 05:19:52,458 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:19:52,458 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 05:19:52,458 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 05:19:52,458 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 05:19:52,458 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse1 (<= ~a21~0 0)) (.cse8 (<= ~a7~0 0)) (.cse6 (<= ~a16~0 4)) (.cse2 (= ~a17~0 1)) (.cse5 (<= 15 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse9 (not .cse3))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse5 .cse2) (and .cse4 .cse6 .cse7 .cse8) (and .cse7 .cse3 .cse1) (and .cse4 .cse8 .cse3 .cse2) (and .cse6 .cse3 .cse2) (and .cse7 .cse9 .cse5) (and (<= 14 ~a8~0) .cse4 .cse7 .cse3) (and .cse0 .cse7 .cse9)))) [2020-12-09 05:19:52,458 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 05:19:52,459 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 05:19:52,460 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1))) (let ((.cse1 (<= ~a21~0 0)) (.cse8 (<= ~a7~0 0)) (.cse6 (<= ~a16~0 4)) (.cse2 (= ~a17~0 1)) (.cse5 (<= 15 ~a8~0)) (.cse4 (= ~a21~0 1)) (.cse0 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse9 (not .cse3))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse5 .cse2) (and .cse4 .cse6 .cse7 .cse8) (and .cse7 .cse3 .cse1) (and .cse4 .cse8 .cse3 .cse2) (and .cse6 .cse3 .cse2) (and .cse7 .cse9 .cse5) (and (<= 14 ~a8~0) .cse4 .cse7 .cse3) (and .cse0 .cse7 .cse9)))) [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 441) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 05:19:52,461 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 05:19:52,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:19:52 BoogieIcfgContainer [2020-12-09 05:19:52,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:19:52,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:19:52,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:19:52,479 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:19:52,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:19:44" (3/4) ... [2020-12-09 05:19:52,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:19:52,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 05:19:52,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 05:19:52,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 05:19:52,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 05:19:52,594 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a626b9f9-3cdd-4476-b453-fc926677c2cd/bin/utaipan/witness.graphml [2020-12-09 05:19:52,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:19:52,595 INFO L168 Benchmark]: Toolchain (without parser) took 10338.09 ms. Allocated memory was 123.7 MB in the beginning and 327.2 MB in the end (delta: 203.4 MB). Free memory was 102.3 MB in the beginning and 226.9 MB in the end (delta: -124.7 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,595 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 71.3 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:19:52,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.30 ms. Allocated memory is still 123.7 MB. Free memory was 102.3 MB in the beginning and 79.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 123.7 MB. Free memory was 79.8 MB in the beginning and 73.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,596 INFO L168 Benchmark]: Boogie Preprocessor took 45.57 ms. Allocated memory is still 123.7 MB. Free memory was 73.9 MB in the beginning and 69.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,596 INFO L168 Benchmark]: RCFGBuilder took 1274.12 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 69.3 MB in the beginning and 110.2 MB in the end (delta: -40.9 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,596 INFO L168 Benchmark]: TraceAbstraction took 8450.29 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 110.2 MB in the beginning and 241.6 MB in the end (delta: -131.5 MB). Peak memory consumption was 178.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,596 INFO L168 Benchmark]: Witness Printer took 114.97 ms. Allocated memory is still 327.2 MB. Free memory was 241.6 MB in the beginning and 226.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:19:52,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 71.3 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.30 ms. Allocated memory is still 123.7 MB. Free memory was 102.3 MB in the beginning and 79.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 123.7 MB. Free memory was 79.8 MB in the beginning and 73.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.57 ms. Allocated memory is still 123.7 MB. Free memory was 73.9 MB in the beginning and 69.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1274.12 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 69.3 MB in the beginning and 110.2 MB in the end (delta: -40.9 MB). Peak memory consumption was 47.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8450.29 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 110.2 MB in the beginning and 241.6 MB in the end (delta: -131.5 MB). Peak memory consumption was 178.9 MB. Max. memory is 16.1 GB. * Witness Printer took 114.97 ms. Allocated memory is still 327.2 MB. Free memory was 241.6 MB in the beginning and 226.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 441]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a20 == 1 && a21 <= 0) && a17 == 1)) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a20 == 1 && a21 <= 0) && a17 == 1)) || ((a21 == 1 && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a16 <= 4) && a17 <= 0) && a7 <= 0)) || ((a17 <= 0 && a20 == 1) && a21 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || (((14 <= a8 && a21 == 1) && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 924 SDslu, 60 SDs, 0 SdLazy, 2965 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1982 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1392 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2873 NumberOfCodeBlocks, 2873 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3842 ConstructedInterpolants, 0 QuantifiedInterpolants, 1667231 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2166 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 23 InterpolantComputations, 18 PerfectInterpolantSequences, 4098/4188 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...