./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/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 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:01,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:01,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:01,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:01,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:01,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:01,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:01,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:01,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:01,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:01,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:01,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:01,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:01,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:01,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:01,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:01,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:01,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:01,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:01,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:01,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:01,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:01,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:01,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:01,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:01,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:01,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:01,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:01,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:01,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:01,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:01,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:01,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:01,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:01,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:01,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:01,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:01,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:01,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:01,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:01,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:01,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:01,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:01,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:01,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:01,290 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:01,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:01,291 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:01,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:01,291 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:01,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:01,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:01,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:01,293 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:01,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:01,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:01,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:01,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:01,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:01,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:01,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:01,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:01,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:01,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:01,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:01,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:01,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:01,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:01,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:01,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:01,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:01,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:01,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:01,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:01,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:01,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:01,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:01,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:01,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:01,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:01,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:01,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:01,302 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_93d503ad-7135-48a2-a955-c374708ad9ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51d92a84bc78e88f15f7a4ac533fe50d944a2d4f [2020-11-28 07:42:01,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:01,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:01,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:01,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:01,689 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:01,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-11-28 07:42:01,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/data/ff86b8dee/34d320c7dbfa4f50928dba1e88eedfef/FLAG7385635a5 [2020-11-28 07:42:02,529 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:02,530 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/sv-benchmarks/c/eca-rers2012/Problem01_label26.c [2020-11-28 07:42:02,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/data/ff86b8dee/34d320c7dbfa4f50928dba1e88eedfef/FLAG7385635a5 [2020-11-28 07:42:02,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/data/ff86b8dee/34d320c7dbfa4f50928dba1e88eedfef [2020-11-28 07:42:02,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:02,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:02,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:02,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:02,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:02,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233434c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02, skipping insertion in model container [2020-11-28 07:42:02,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:02,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:03,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,286 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:03,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,403 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:03,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03 WrapperNode [2020-11-28 07:42:03,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:03,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:03,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:03,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:03,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:03,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:03,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:03,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:03,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/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 [2020-11-28 07:42:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:06,240 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:06,240 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:06,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:06 BoogieIcfgContainer [2020-11-28 07:42:06,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:06,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:06,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:06,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:06,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:02" (1/3) ... [2020-11-28 07:42:06,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feed343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:06, skipping insertion in model container [2020-11-28 07:42:06,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (2/3) ... [2020-11-28 07:42:06,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feed343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:06, skipping insertion in model container [2020-11-28 07:42:06,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:06" (3/3) ... [2020-11-28 07:42:06,253 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-11-28 07:42:06,267 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:06,272 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:06,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:06,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:06,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:06,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:06,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:06,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:06,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:06,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:06,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:42:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:42:06,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:06,349 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] [2020-11-28 07:42:06,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:06,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1520708205, now seen corresponding path program 1 times [2020-11-28 07:42:06,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:06,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027956634] [2020-11-28 07:42:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:06,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027956634] [2020-11-28 07:42:06,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:06,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:06,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214647714] [2020-11-28 07:42:06,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:06,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:06,897 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:42:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:07,535 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:42:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:07,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:42:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:07,549 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:42:07,549 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:42:07,552 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 [2020-11-28 07:42:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:42:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:42:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:42:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-28 07:42:07,620 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-28 07:42:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:07,622 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-28 07:42:07,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-28 07:42:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:42:07,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:07,629 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] [2020-11-28 07:42:07,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:07,629 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1975137982, now seen corresponding path program 1 times [2020-11-28 07:42:07,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:07,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930004731] [2020-11-28 07:42:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:07,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930004731] [2020-11-28 07:42:07,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:07,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:07,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938283112] [2020-11-28 07:42:07,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:07,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:07,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:07,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:07,715 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-28 07:42:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:08,199 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-11-28 07:42:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:08,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:42:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:08,203 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:42:08,203 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:42:08,205 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 [2020-11-28 07:42:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:42:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:42:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:42:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-11-28 07:42:08,225 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-11-28 07:42:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:08,225 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-11-28 07:42:08,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-11-28 07:42:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:42:08,228 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:08,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:08,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:08,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1832090564, now seen corresponding path program 1 times [2020-11-28 07:42:08,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:08,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224747967] [2020-11-28 07:42:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:08,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224747967] [2020-11-28 07:42:08,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:08,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:08,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675204813] [2020-11-28 07:42:08,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:08,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:08,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:08,512 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 4 states. [2020-11-28 07:42:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:09,142 INFO L93 Difference]: Finished difference Result 784 states and 1303 transitions. [2020-11-28 07:42:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:09,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-28 07:42:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:09,146 INFO L225 Difference]: With dead ends: 784 [2020-11-28 07:42:09,146 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:42:09,148 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 [2020-11-28 07:42:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:42:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-11-28 07:42:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-28 07:42:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 512 transitions. [2020-11-28 07:42:09,188 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 512 transitions. Word has length 78 [2020-11-28 07:42:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:09,189 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 512 transitions. [2020-11-28 07:42:09,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 512 transitions. [2020-11-28 07:42:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-28 07:42:09,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:09,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:09,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:09,201 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2026356915, now seen corresponding path program 1 times [2020-11-28 07:42:09,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:09,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967129344] [2020-11-28 07:42:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:42:09,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967129344] [2020-11-28 07:42:09,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:09,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82917855] [2020-11-28 07:42:09,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:09,311 INFO L87 Difference]: Start difference. First operand 358 states and 512 transitions. Second operand 3 states. [2020-11-28 07:42:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:09,799 INFO L93 Difference]: Finished difference Result 857 states and 1253 transitions. [2020-11-28 07:42:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:09,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-11-28 07:42:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:09,803 INFO L225 Difference]: With dead ends: 857 [2020-11-28 07:42:09,804 INFO L226 Difference]: Without dead ends: 500 [2020-11-28 07:42:09,805 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 [2020-11-28 07:42:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-28 07:42:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-11-28 07:42:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:42:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 595 transitions. [2020-11-28 07:42:09,825 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 595 transitions. Word has length 88 [2020-11-28 07:42:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:09,825 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 595 transitions. [2020-11-28 07:42:09,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 595 transitions. [2020-11-28 07:42:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-28 07:42:09,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:09,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:42:09,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:09,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:09,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:09,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1996677981, now seen corresponding path program 1 times [2020-11-28 07:42:09,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:09,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373443444] [2020-11-28 07:42:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 07:42:09,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373443444] [2020-11-28 07:42:09,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:09,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:09,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974604876] [2020-11-28 07:42:09,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:09,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:09,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:09,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:09,920 INFO L87 Difference]: Start difference. First operand 429 states and 595 transitions. Second operand 3 states. [2020-11-28 07:42:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:10,359 INFO L93 Difference]: Finished difference Result 1141 states and 1560 transitions. [2020-11-28 07:42:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:10,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-11-28 07:42:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:10,368 INFO L225 Difference]: With dead ends: 1141 [2020-11-28 07:42:10,369 INFO L226 Difference]: Without dead ends: 713 [2020-11-28 07:42:10,370 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 [2020-11-28 07:42:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-28 07:42:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2020-11-28 07:42:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-28 07:42:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 787 transitions. [2020-11-28 07:42:10,402 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 787 transitions. Word has length 97 [2020-11-28 07:42:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:10,403 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 787 transitions. [2020-11-28 07:42:10,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 787 transitions. [2020-11-28 07:42:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:42:10,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:10,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:10,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:42:10,405 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash -929947124, now seen corresponding path program 1 times [2020-11-28 07:42:10,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:10,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78621395] [2020-11-28 07:42:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 07:42:10,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78621395] [2020-11-28 07:42:10,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:10,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:10,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261091722] [2020-11-28 07:42:10,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:10,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:10,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:10,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:10,497 INFO L87 Difference]: Start difference. First operand 571 states and 787 transitions. Second operand 4 states. [2020-11-28 07:42:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:11,077 INFO L93 Difference]: Finished difference Result 1496 states and 2052 transitions. [2020-11-28 07:42:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:11,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-28 07:42:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:11,084 INFO L225 Difference]: With dead ends: 1496 [2020-11-28 07:42:11,084 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:42:11,085 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 [2020-11-28 07:42:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:42:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-28 07:42:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:42:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1053 transitions. [2020-11-28 07:42:11,141 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1053 transitions. Word has length 103 [2020-11-28 07:42:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:11,141 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1053 transitions. [2020-11-28 07:42:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1053 transitions. [2020-11-28 07:42:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-11-28 07:42:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:11,150 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-28 07:42:11,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:42:11,150 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:11,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1439710423, now seen corresponding path program 1 times [2020-11-28 07:42:11,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:11,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121203221] [2020-11-28 07:42:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 07:42:11,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121203221] [2020-11-28 07:42:11,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:11,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:11,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753326757] [2020-11-28 07:42:11,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:11,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:11,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:11,298 INFO L87 Difference]: Start difference. First operand 784 states and 1053 transitions. Second operand 3 states. [2020-11-28 07:42:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:11,735 INFO L93 Difference]: Finished difference Result 1709 states and 2311 transitions. [2020-11-28 07:42:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:11,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-11-28 07:42:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:11,742 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:42:11,743 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:42:11,744 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 [2020-11-28 07:42:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:42:11,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-28 07:42:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:42:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1211 transitions. [2020-11-28 07:42:11,773 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1211 transitions. Word has length 121 [2020-11-28 07:42:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:11,773 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1211 transitions. [2020-11-28 07:42:11,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1211 transitions. [2020-11-28 07:42:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-28 07:42:11,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:11,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:11,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:42:11,777 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:11,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1455235910, now seen corresponding path program 1 times [2020-11-28 07:42:11,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:11,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904980737] [2020-11-28 07:42:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:11,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904980737] [2020-11-28 07:42:11,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:11,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:11,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880932068] [2020-11-28 07:42:11,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:11,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:11,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:11,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:11,904 INFO L87 Difference]: Start difference. First operand 926 states and 1211 transitions. Second operand 3 states. [2020-11-28 07:42:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:12,311 INFO L93 Difference]: Finished difference Result 2064 states and 2727 transitions. [2020-11-28 07:42:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:12,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-28 07:42:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:12,319 INFO L225 Difference]: With dead ends: 2064 [2020-11-28 07:42:12,319 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:42:12,321 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 [2020-11-28 07:42:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:42:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-11-28 07:42:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:42:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1383 transitions. [2020-11-28 07:42:12,357 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1383 transitions. Word has length 130 [2020-11-28 07:42:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:12,359 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1383 transitions. [2020-11-28 07:42:12,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1383 transitions. [2020-11-28 07:42:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-11-28 07:42:12,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:12,363 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:12,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:42:12,364 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:12,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1880050017, now seen corresponding path program 1 times [2020-11-28 07:42:12,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:12,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535597289] [2020-11-28 07:42:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-28 07:42:12,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535597289] [2020-11-28 07:42:12,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:12,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:12,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978257109] [2020-11-28 07:42:12,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:12,547 INFO L87 Difference]: Start difference. First operand 1068 states and 1383 transitions. Second operand 3 states. [2020-11-28 07:42:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:12,967 INFO L93 Difference]: Finished difference Result 2277 states and 2917 transitions. [2020-11-28 07:42:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:12,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-11-28 07:42:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:12,977 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:42:12,977 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:42:12,980 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 [2020-11-28 07:42:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:42:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-11-28 07:42:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:42:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1371 transitions. [2020-11-28 07:42:13,014 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1371 transitions. Word has length 153 [2020-11-28 07:42:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:13,015 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1371 transitions. [2020-11-28 07:42:13,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1371 transitions. [2020-11-28 07:42:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-11-28 07:42:13,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:13,020 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:42:13,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:42:13,020 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1952542848, now seen corresponding path program 1 times [2020-11-28 07:42:13,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:13,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856655114] [2020-11-28 07:42:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:42:13,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856655114] [2020-11-28 07:42:13,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580797637] [2020-11-28 07:42:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/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 [2020-11-28 07:42:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:13,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:13,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 07:42:13,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 07:42:13,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:42:13,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-28 07:42:13,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17937740] [2020-11-28 07:42:13,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:13,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:13,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:13,987 INFO L87 Difference]: Start difference. First operand 1068 states and 1371 transitions. Second operand 3 states. [2020-11-28 07:42:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:14,457 INFO L93 Difference]: Finished difference Result 2135 states and 2741 transitions. [2020-11-28 07:42:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:14,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-11-28 07:42:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:14,465 INFO L225 Difference]: With dead ends: 2135 [2020-11-28 07:42:14,465 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:42:14,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 434 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:42:14,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-11-28 07:42:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:42:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1305 transitions. [2020-11-28 07:42:14,503 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1305 transitions. Word has length 218 [2020-11-28 07:42:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:14,504 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1305 transitions. [2020-11-28 07:42:14,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1305 transitions. [2020-11-28 07:42:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-28 07:42:14,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:14,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:42:14,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:42:14,734 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:14,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1182844426, now seen corresponding path program 1 times [2020-11-28 07:42:14,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:14,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73324597] [2020-11-28 07:42:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-28 07:42:14,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73324597] [2020-11-28 07:42:14,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:14,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:14,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152949475] [2020-11-28 07:42:14,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:14,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:14,950 INFO L87 Difference]: Start difference. First operand 1068 states and 1305 transitions. Second operand 3 states. [2020-11-28 07:42:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:15,462 INFO L93 Difference]: Finished difference Result 2346 states and 2849 transitions. [2020-11-28 07:42:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:15,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-28 07:42:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:15,464 INFO L225 Difference]: With dead ends: 2346 [2020-11-28 07:42:15,465 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:15,468 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 [2020-11-28 07:42:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:15,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-28 07:42:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:15,469 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:15,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:15,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:15,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:42:15,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:15,815 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-11-28 07:42:16,030 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-11-28 07:42:16,033 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:42:16,034 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:42:16,035 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:42:16,036 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:42:16,037 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:42:16,038 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (not (= ~a7~0 1))) (.cse0 (= ~a21~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse2 .cse3) (and .cse0 (or (and .cse1 (= ~a17~0 1)) (and .cse1 (<= 5 ~a16~0)))) (and (<= ~a16~0 5) .cse3) (and .cse1 (<= ~a8~0 13)))) [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:42:16,039 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:42:16,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:16 BoogieIcfgContainer [2020-11-28 07:42:16,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:16,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:16,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:16,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:16,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:06" (3/4) ... [2020-11-28 07:42:16,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:16,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-28 07:42:16,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:42:16,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:42:16,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:42:16,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93d503ad-7135-48a2-a955-c374708ad9ac/bin/utaipan/witness.graphml [2020-11-28 07:42:16,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:16,300 INFO L168 Benchmark]: Toolchain (without parser) took 13618.61 ms. Allocated memory was 104.9 MB in the beginning and 335.5 MB in the end (delta: 230.7 MB). Free memory was 77.0 MB in the beginning and 193.6 MB in the end (delta: -116.6 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,300 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory was 61.2 MB in the beginning and 61.1 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:16,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.23 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 64.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.47 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 59.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,301 INFO L168 Benchmark]: Boogie Preprocessor took 97.90 ms. Allocated memory is still 104.9 MB. Free memory was 59.3 MB in the beginning and 54.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,302 INFO L168 Benchmark]: RCFGBuilder took 2645.46 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 54.7 MB in the beginning and 47.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,303 INFO L168 Benchmark]: TraceAbstraction took 9828.38 ms. Allocated memory was 134.2 MB in the beginning and 335.5 MB in the end (delta: 201.3 MB). Free memory was 47.6 MB in the beginning and 209.3 MB in the end (delta: -161.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,304 INFO L168 Benchmark]: Witness Printer took 225.71 ms. Allocated memory is still 335.5 MB. Free memory was 209.3 MB in the beginning and 193.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:16,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory was 61.2 MB in the beginning and 61.1 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.23 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 64.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.47 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 59.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.90 ms. Allocated memory is still 104.9 MB. Free memory was 59.3 MB in the beginning and 54.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2645.46 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 54.7 MB in the beginning and 47.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9828.38 ms. Allocated memory was 134.2 MB in the beginning and 335.5 MB in the end (delta: 201.3 MB). Free memory was 47.6 MB in the beginning and 209.3 MB in the end (delta: -161.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 225.71 ms. Allocated memory is still 335.5 MB. Free memory was 209.3 MB in the beginning and 193.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1 && a20 == 1) && !(a7 == 1)) || (!(a7 == 1) && a20 <= 0)) || (a21 == 1 && ((a20 == 1 && a17 == 1) || (a20 == 1 && 5 <= a16)))) || (a16 <= 5 && a20 <= 0)) || (a20 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 547 SDtfs, 610 SDslu, 48 SDs, 0 SdLazy, 2366 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2128 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 140 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1576 NumberOfCodeBlocks, 1576 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127991 SizeOfPredicates, 1 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1496/1584 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...