./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.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_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/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 a83405447735331b883b1abbbdcfee86db37bc76 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:41:45,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:45,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:45,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:45,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:45,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:45,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:45,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:45,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:45,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:45,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:45,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:45,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:45,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:45,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:45,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:45,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:45,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:45,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:45,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:45,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:45,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:45,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:45,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:45,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:45,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:45,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:45,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:45,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:45,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:45,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:45,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:45,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:45,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:45,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:45,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:45,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:45,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:45,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:45,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:45,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:45,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:41:45,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:45,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:45,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:45,378 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:45,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:45,378 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:45,379 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:45,379 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:45,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:45,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:45,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:45,381 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:45,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:45,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:45,381 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:45,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:45,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:45,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:45,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:45,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:45,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:45,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:45,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:45,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:45,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:45,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:45,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:45,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:45,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:45,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:45,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:45,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:45,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:45,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:45,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:45,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:45,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:45,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:45,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:45,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:45,389 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_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a83405447735331b883b1abbbdcfee86db37bc76 [2020-11-28 07:41:45,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:45,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:45,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:45,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:45,741 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:45,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2020-11-28 07:41:45,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/data/871dc58a2/d7273276e06849c98fd0888c9ba54030/FLAG99bb43dd3 [2020-11-28 07:41:46,414 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:46,414 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2020-11-28 07:41:46,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/data/871dc58a2/d7273276e06849c98fd0888c9ba54030/FLAG99bb43dd3 [2020-11-28 07:41:46,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/data/871dc58a2/d7273276e06849c98fd0888c9ba54030 [2020-11-28 07:41:46,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:46,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:46,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:46,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:46,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:46,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:46" (1/1) ... [2020-11-28 07:41:46,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec912ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:46, skipping insertion in model container [2020-11-28 07:41:46,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:46" (1/1) ... [2020-11-28 07:41:46,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:46,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:47,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:47,196 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:47,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:47,355 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:47,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47 WrapperNode [2020-11-28 07:41:47,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:47,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:47,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:47,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:47,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:47,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:47,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:47,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:47,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... [2020-11-28 07:41:47,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:47,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:47,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:47,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:47,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/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 07:41:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:50,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:50,405 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:41:50,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:50 BoogieIcfgContainer [2020-11-28 07:41:50,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:50,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:50,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:50,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:50,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:46" (1/3) ... [2020-11-28 07:41:50,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbb62d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:50, skipping insertion in model container [2020-11-28 07:41:50,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:47" (2/3) ... [2020-11-28 07:41:50,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbb62d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:50, skipping insertion in model container [2020-11-28 07:41:50,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:50" (3/3) ... [2020-11-28 07:41:50,420 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-11-28 07:41:50,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:50,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:50,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:41:50,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:50,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:50,485 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:50,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:50,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:50,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:50,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:50,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:41:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:41:50,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:50,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:50,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash -216539632, now seen corresponding path program 1 times [2020-11-28 07:41:50,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:50,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641273689] [2020-11-28 07:41:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:50,917 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 07:41:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641273689] [2020-11-28 07:41:50,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:50,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:50,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561979104] [2020-11-28 07:41:50,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:50,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:50,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:50,965 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:41:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:51,538 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:41:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:51,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:41:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:51,567 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:41:51,567 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:41:51,570 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 07:41:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:41:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:41:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:41:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-28 07:41:51,622 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-28 07:41:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:51,623 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-28 07:41:51,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-28 07:41:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:41:51,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:51,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:51,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:51,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1992949821, now seen corresponding path program 1 times [2020-11-28 07:41:51,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:51,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753519028] [2020-11-28 07:41:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:51,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753519028] [2020-11-28 07:41:51,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:51,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:51,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930550603] [2020-11-28 07:41:51,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:51,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:51,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:51,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:51,715 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-28 07:41:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:52,300 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-28 07:41:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:52,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:41:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:52,304 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:41:52,305 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:41:52,306 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 07:41:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:41:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:41:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:41:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-28 07:41:52,344 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-28 07:41:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:52,344 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-28 07:41:52,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-28 07:41:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:41:52,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:52,351 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:52,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:41:52,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1654433506, now seen corresponding path program 1 times [2020-11-28 07:41:52,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:52,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380162793] [2020-11-28 07:41:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:52,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380162793] [2020-11-28 07:41:52,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135066081] [2020-11-28 07:41:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/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 07:41:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:52,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:52,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:41:52,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:41:52,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:52,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:41:52,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140659693] [2020-11-28 07:41:52,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:52,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:52,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:52,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:52,841 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-28 07:41:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:53,536 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-28 07:41:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:53,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:41:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:53,541 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:41:53,541 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:41:53,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:41:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-28 07:41:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:41:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-28 07:41:53,584 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-28 07:41:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:53,584 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-28 07:41:53,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-28 07:41:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:41:53,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:53,591 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:53,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:41:53,816 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:53,817 INFO L82 PathProgramCache]: Analyzing trace with hash -215851558, now seen corresponding path program 1 times [2020-11-28 07:41:53,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:53,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172921144] [2020-11-28 07:41:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:53,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172921144] [2020-11-28 07:41:53,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:53,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:53,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475550445] [2020-11-28 07:41:53,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:53,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:53,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:53,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:53,890 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-28 07:41:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:54,187 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-28 07:41:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:54,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:41:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:54,190 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:41:54,190 INFO L226 Difference]: Without dead ends: 403 [2020-11-28 07:41:54,192 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 07:41:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-28 07:41:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-28 07:41:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:41:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-28 07:41:54,217 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-28 07:41:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:54,218 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-28 07:41:54,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-28 07:41:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:41:54,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:54,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:54,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:41:54,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash 441528860, now seen corresponding path program 1 times [2020-11-28 07:41:54,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:54,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502329928] [2020-11-28 07:41:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:41:54,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502329928] [2020-11-28 07:41:54,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:54,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:54,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487052356] [2020-11-28 07:41:54,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:54,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:54,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:54,374 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-28 07:41:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:54,832 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-28 07:41:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:54,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:41:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:54,837 INFO L225 Difference]: With dead ends: 885 [2020-11-28 07:41:54,837 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:41:54,838 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 07:41:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:41:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-28 07:41:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-28 07:41:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-28 07:41:54,856 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-28 07:41:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:54,856 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-28 07:41:54,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-28 07:41:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 07:41:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:54,859 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:54,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:41:54,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:54,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1831505836, now seen corresponding path program 1 times [2020-11-28 07:41:54,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:54,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431307518] [2020-11-28 07:41:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-28 07:41:54,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431307518] [2020-11-28 07:41:54,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105006698] [2020-11-28 07:41:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:55,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:41:55,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:41:55,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:55,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:41:55,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858180484] [2020-11-28 07:41:55,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:55,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:55,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:55,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:55,206 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-28 07:41:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:55,729 INFO L93 Difference]: Finished difference Result 1285 states and 1916 transitions. [2020-11-28 07:41:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:55,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 07:41:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:55,735 INFO L225 Difference]: With dead ends: 1285 [2020-11-28 07:41:55,735 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:41:55,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:41:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-28 07:41:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:41:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2020-11-28 07:41:55,764 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 133 [2020-11-28 07:41:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:55,765 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2020-11-28 07:41:55,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2020-11-28 07:41:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-28 07:41:55,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:55,772 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:41:55,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:55,984 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:55,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash 294632434, now seen corresponding path program 1 times [2020-11-28 07:41:55,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:55,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657635565] [2020-11-28 07:41:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-28 07:41:56,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657635565] [2020-11-28 07:41:56,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140525665] [2020-11-28 07:41:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:56,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:56,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:41:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 07:41:56,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:56,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:41:56,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664264702] [2020-11-28 07:41:56,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:56,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:56,443 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand 3 states. [2020-11-28 07:41:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:56,927 INFO L93 Difference]: Finished difference Result 1605 states and 2230 transitions. [2020-11-28 07:41:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:56,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-28 07:41:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:56,931 INFO L225 Difference]: With dead ends: 1605 [2020-11-28 07:41:56,932 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:41:56,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:41:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:41:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:41:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 830 transitions. [2020-11-28 07:41:56,951 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 830 transitions. Word has length 181 [2020-11-28 07:41:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:56,951 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 830 transitions. [2020-11-28 07:41:56,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 830 transitions. [2020-11-28 07:41:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-28 07:41:56,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:56,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:57,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:57,174 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:57,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1588826190, now seen corresponding path program 1 times [2020-11-28 07:41:57,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:57,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093245331] [2020-11-28 07:41:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 07:41:57,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093245331] [2020-11-28 07:41:57,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:57,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:41:57,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323849977] [2020-11-28 07:41:57,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:41:57,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:41:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:57,330 INFO L87 Difference]: Start difference. First operand 643 states and 830 transitions. Second operand 5 states. [2020-11-28 07:41:58,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:58,165 INFO L93 Difference]: Finished difference Result 1392 states and 1816 transitions. [2020-11-28 07:41:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:41:58,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-11-28 07:41:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:58,169 INFO L225 Difference]: With dead ends: 1392 [2020-11-28 07:41:58,170 INFO L226 Difference]: Without dead ends: 664 [2020-11-28 07:41:58,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-11-28 07:41:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 643. [2020-11-28 07:41:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:41:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 781 transitions. [2020-11-28 07:41:58,191 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 781 transitions. Word has length 183 [2020-11-28 07:41:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:58,191 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 781 transitions. [2020-11-28 07:41:58,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:41:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 781 transitions. [2020-11-28 07:41:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-28 07:41:58,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:58,195 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:58,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:41:58,200 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash -822973160, now seen corresponding path program 1 times [2020-11-28 07:41:58,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:58,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128128720] [2020-11-28 07:41:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 07:41:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128128720] [2020-11-28 07:41:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343134006] [2020-11-28 07:41:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:58,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:58,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 07:41:58,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 07:41:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:58,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:41:58,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909566700] [2020-11-28 07:41:58,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:58,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:58,627 INFO L87 Difference]: Start difference. First operand 643 states and 781 transitions. Second operand 3 states. [2020-11-28 07:41:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:59,007 INFO L93 Difference]: Finished difference Result 1363 states and 1674 transitions. [2020-11-28 07:41:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:59,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2020-11-28 07:41:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:59,009 INFO L225 Difference]: With dead ends: 1363 [2020-11-28 07:41:59,009 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:59,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:59,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2020-11-28 07:41:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:59,012 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:59,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:59,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:59,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:59,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:41:59,419 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:41:59,420 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:41:59,421 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:41:59,422 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:41:59,423 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:41:59,423 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:41:59,423 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse0 (= ~a19~0 1))) (or (and .cse0 (= ~a21~0 1) (<= 8 ~a17~0) .cse1) (and (<= ~a28~0 9) .cse1) (and (<= ~a19~0 0) .cse1) (and .cse0 (= ~a25~0 0) (<= ~a17~0 7)))) [2020-11-28 07:41:59,423 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:41:59,423 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:41:59,423 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:41:59,423 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:41:59,424 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:41:59,424 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:41:59,424 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:41:59,424 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:41:59,425 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:59,425 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:41:59,425 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:41:59,426 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse0 (= ~a19~0 1))) (or (and .cse0 (= ~a21~0 1) (<= 8 ~a17~0) .cse1) (and (<= ~a28~0 9) .cse1) (and (<= ~a19~0 0) .cse1) (and .cse0 (= ~a25~0 0) (<= ~a17~0 7)))) [2020-11-28 07:41:59,426 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:41:59,426 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:41:59,426 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:41:59,426 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:41:59,426 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:41:59,427 INFO L274 CegarLoopResult]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:41:59,428 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:41:59,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:59 BoogieIcfgContainer [2020-11-28 07:41:59,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:59,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:59,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:59,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:59,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:50" (3/4) ... [2020-11-28 07:41:59,450 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:59,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:41:59,472 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:41:59,474 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:41:59,476 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:41:59,639 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4a1b73f-01d2-4bff-83eb-0c91bfa05014/bin/utaipan/witness.graphml [2020-11-28 07:41:59,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:59,641 INFO L168 Benchmark]: Toolchain (without parser) took 12960.09 ms. Allocated memory was 98.6 MB in the beginning and 289.4 MB in the end (delta: 190.8 MB). Free memory was 67.8 MB in the beginning and 173.4 MB in the end (delta: -105.6 MB). Peak memory consumption was 84.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,642 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:59,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.63 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 59.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.0 MB in the beginning and 53.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,644 INFO L168 Benchmark]: Boogie Preprocessor took 104.14 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 53.7 MB in the beginning and 99.2 MB in the end (delta: -45.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,645 INFO L168 Benchmark]: RCFGBuilder took 2819.03 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 99.2 MB in the beginning and 87.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,645 INFO L168 Benchmark]: TraceAbstraction took 9034.34 ms. Allocated memory was 157.3 MB in the beginning and 289.4 MB in the end (delta: 132.1 MB). Free memory was 87.8 MB in the beginning and 189.1 MB in the end (delta: -101.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,646 INFO L168 Benchmark]: Witness Printer took 193.84 ms. Allocated memory is still 289.4 MB. Free memory was 189.1 MB in the beginning and 173.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:59,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 689.63 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 59.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.0 MB in the beginning and 53.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.14 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 53.7 MB in the beginning and 99.2 MB in the end (delta: -45.6 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2819.03 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 99.2 MB in the beginning and 87.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9034.34 ms. Allocated memory was 157.3 MB in the beginning and 289.4 MB in the end (delta: 132.1 MB). Free memory was 87.8 MB in the beginning and 189.1 MB in the end (delta: -101.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * Witness Printer took 193.84 ms. Allocated memory is still 289.4 MB. Free memory was 189.1 MB in the beginning and 173.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || (a28 <= 9 && a17 <= 8)) || (a19 <= 0 && a17 <= 8)) || ((a19 == 1 && a25 == 0) && a17 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || (a28 <= 9 && a17 <= 8)) || (a19 <= 0 && a17 <= 8)) || ((a19 == 1 && a25 == 0) && a17 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 477 SDtfs, 662 SDslu, 57 SDs, 0 SdLazy, 2175 SolverSat, 600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1199 GetRequests, 1173 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 261 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 77 HoareAnnotationTreeSize, 3 FomulaSimplifications, 960 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1729 NumberOfCodeBlocks, 1729 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2302 ConstructedInterpolants, 0 QuantifiedInterpolants, 682364 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1512 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1697/1714 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...