./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.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_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/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 62866bd9334bc9e66fef5c8a3ab686f8cd6aa0c9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:23:16,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:23:16,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:23:16,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:23:16,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:23:16,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:23:16,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:23:16,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:23:16,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:23:16,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:23:16,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:23:16,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:23:16,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:23:16,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:23:16,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:23:16,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:23:16,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:23:16,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:23:16,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:23:16,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:23:16,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:23:16,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:23:16,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:23:16,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:23:16,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:23:16,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:23:16,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:23:16,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:23:16,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:23:16,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:23:16,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:23:16,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:23:16,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:23:16,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:23:16,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:23:16,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:23:16,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:23:16,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:23:16,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:23:16,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:23:16,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:23:16,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:23:16,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:23:16,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:23:16,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:23:16,311 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:23:16,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:23:16,311 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:23:16,312 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:23:16,312 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:23:16,312 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:23:16,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:23:16,313 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:23:16,313 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:23:16,313 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:23:16,313 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:23:16,314 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:23:16,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:23:16,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:23:16,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:23:16,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:23:16,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:23:16,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:23:16,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:23:16,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:23:16,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:23:16,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:23:16,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:23:16,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:23:16,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:23:16,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:23:16,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:23:16,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:23:16,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:23:16,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:23:16,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:23:16,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:23:16,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:23:16,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:23:16,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:23:16,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:23:16,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:23:16,320 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_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62866bd9334bc9e66fef5c8a3ab686f8cd6aa0c9 [2020-11-30 02:23:16,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:23:16,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:23:16,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:23:16,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:23:16,619 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:23:16,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2020-11-30 02:23:16,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/data/92e2fe0e2/867263d478504d87b4adee9fecab1c3d/FLAGe5b2860b5 [2020-11-30 02:23:17,279 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:23:17,280 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/sv-benchmarks/c/eca-rers2012/Problem01_label02.c [2020-11-30 02:23:17,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/data/92e2fe0e2/867263d478504d87b4adee9fecab1c3d/FLAGe5b2860b5 [2020-11-30 02:23:17,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/data/92e2fe0e2/867263d478504d87b4adee9fecab1c3d [2020-11-30 02:23:17,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:23:17,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:23:17,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:17,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:23:17,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:23:17,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:17" (1/1) ... [2020-11-30 02:23:17,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4ff432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:17, skipping insertion in model container [2020-11-30 02:23:17,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:17" (1/1) ... [2020-11-30 02:23:17,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:23:17,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:23:18,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:18,042 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:23:18,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:18,354 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:23:18,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18 WrapperNode [2020-11-30 02:23:18,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:18,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:18,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:23:18,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:23:18,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:18,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:23:18,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:23:18,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:23:18,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... [2020-11-30 02:23:18,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:23:18,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:23:18,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:23:18,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:23:18,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/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 [2020-11-30 02:23:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:23:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:23:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:23:18,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:23:21,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:23:21,614 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:23:21,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:21 BoogieIcfgContainer [2020-11-30 02:23:21,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:23:21,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:23:21,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:23:21,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:23:21,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:23:17" (1/3) ... [2020-11-30 02:23:21,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30549a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:21, skipping insertion in model container [2020-11-30 02:23:21,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:18" (2/3) ... [2020-11-30 02:23:21,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30549a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:21, skipping insertion in model container [2020-11-30 02:23:21,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:21" (3/3) ... [2020-11-30 02:23:21,624 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2020-11-30 02:23:21,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:23:21,639 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:23:21,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:23:21,674 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:23:21,675 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:23:21,675 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:23:21,675 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:23:21,675 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:23:21,675 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:23:21,675 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:23:21,676 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:23:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 02:23:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 02:23:21,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:21,705 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] [2020-11-30 02:23:21,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1520704877, now seen corresponding path program 1 times [2020-11-30 02:23:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:21,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629926007] [2020-11-30 02:23:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:22,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629926007] [2020-11-30 02:23:22,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:22,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:22,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158743814] [2020-11-30 02:23:22,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:22,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:22,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:22,120 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-30 02:23:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:22,776 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-30 02:23:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:22,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-30 02:23:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:22,801 INFO L225 Difference]: With dead ends: 224 [2020-11-30 02:23:22,803 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 02:23:22,809 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 [2020-11-30 02:23:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 02:23:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-30 02:23:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 02:23:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-30 02:23:22,888 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-30 02:23:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:22,890 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-30 02:23:22,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-30 02:23:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 02:23:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:22,897 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] [2020-11-30 02:23:22,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:23:22,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141310, now seen corresponding path program 1 times [2020-11-30 02:23:22,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:22,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174017224] [2020-11-30 02:23:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:23,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174017224] [2020-11-30 02:23:23,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:23,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:23,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94242323] [2020-11-30 02:23:23,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:23,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:23,023 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-30 02:23:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:23,575 INFO L93 Difference]: Finished difference Result 360 states and 654 transitions. [2020-11-30 02:23:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:23,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-30 02:23:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:23,578 INFO L225 Difference]: With dead ends: 360 [2020-11-30 02:23:23,578 INFO L226 Difference]: Without dead ends: 216 [2020-11-30 02:23:23,579 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 [2020-11-30 02:23:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-30 02:23:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-30 02:23:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-30 02:23:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-11-30 02:23:23,593 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 77 [2020-11-30 02:23:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:23,594 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-11-30 02:23:23,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-11-30 02:23:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 02:23:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:23,598 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] [2020-11-30 02:23:23,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:23:23,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:23,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1832093892, now seen corresponding path program 1 times [2020-11-30 02:23:23,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:23,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268584208] [2020-11-30 02:23:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 02:23:23,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268584208] [2020-11-30 02:23:23,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:23,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841511159] [2020-11-30 02:23:23,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:23,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:23,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:23,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:23,829 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 3 states. [2020-11-30 02:23:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:24,328 INFO L93 Difference]: Finished difference Result 644 states and 1131 transitions. [2020-11-30 02:23:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:24,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-30 02:23:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:24,338 INFO L225 Difference]: With dead ends: 644 [2020-11-30 02:23:24,338 INFO L226 Difference]: Without dead ends: 429 [2020-11-30 02:23:24,340 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 [2020-11-30 02:23:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-30 02:23:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-11-30 02:23:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-30 02:23:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 610 transitions. [2020-11-30 02:23:24,404 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 610 transitions. Word has length 78 [2020-11-30 02:23:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:24,405 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 610 transitions. [2020-11-30 02:23:24,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 610 transitions. [2020-11-30 02:23:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-30 02:23:24,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:24,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:24,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:23:24,416 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1090222253, now seen corresponding path program 1 times [2020-11-30 02:23:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:24,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336449652] [2020-11-30 02:23:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:24,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336449652] [2020-11-30 02:23:24,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:24,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:24,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045934364] [2020-11-30 02:23:24,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:24,510 INFO L87 Difference]: Start difference. First operand 358 states and 610 transitions. Second operand 3 states. [2020-11-30 02:23:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:24,997 INFO L93 Difference]: Finished difference Result 1070 states and 1827 transitions. [2020-11-30 02:23:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:24,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-30 02:23:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:25,003 INFO L225 Difference]: With dead ends: 1070 [2020-11-30 02:23:25,003 INFO L226 Difference]: Without dead ends: 713 [2020-11-30 02:23:25,004 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 [2020-11-30 02:23:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-30 02:23:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 500. [2020-11-30 02:23:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-11-30 02:23:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 783 transitions. [2020-11-30 02:23:25,050 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 783 transitions. Word has length 84 [2020-11-30 02:23:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:25,053 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 783 transitions. [2020-11-30 02:23:25,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 783 transitions. [2020-11-30 02:23:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-30 02:23:25,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:25,056 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] [2020-11-30 02:23:25,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:23:25,056 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2026353587, now seen corresponding path program 1 times [2020-11-30 02:23:25,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:25,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462846891] [2020-11-30 02:23:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:23:25,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462846891] [2020-11-30 02:23:25,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:25,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:25,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395103447] [2020-11-30 02:23:25,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:25,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:25,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:25,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:25,150 INFO L87 Difference]: Start difference. First operand 500 states and 783 transitions. Second operand 3 states. [2020-11-30 02:23:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:25,651 INFO L93 Difference]: Finished difference Result 1141 states and 1761 transitions. [2020-11-30 02:23:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:25,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-11-30 02:23:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:25,656 INFO L225 Difference]: With dead ends: 1141 [2020-11-30 02:23:25,656 INFO L226 Difference]: Without dead ends: 642 [2020-11-30 02:23:25,658 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 [2020-11-30 02:23:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-30 02:23:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-11-30 02:23:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-30 02:23:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 848 transitions. [2020-11-30 02:23:25,694 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 848 transitions. Word has length 88 [2020-11-30 02:23:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:25,696 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 848 transitions. [2020-11-30 02:23:25,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 848 transitions. [2020-11-30 02:23:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 02:23:25,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:25,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:25,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:23:25,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:25,706 INFO L82 PathProgramCache]: Analyzing trace with hash 128887941, now seen corresponding path program 1 times [2020-11-30 02:23:25,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:25,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330026522] [2020-11-30 02:23:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:25,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330026522] [2020-11-30 02:23:25,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:25,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:25,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951845631] [2020-11-30 02:23:25,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:25,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:25,795 INFO L87 Difference]: Start difference. First operand 571 states and 848 transitions. Second operand 3 states. [2020-11-30 02:23:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:26,246 INFO L93 Difference]: Finished difference Result 1283 states and 1891 transitions. [2020-11-30 02:23:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:26,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-11-30 02:23:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:26,253 INFO L225 Difference]: With dead ends: 1283 [2020-11-30 02:23:26,255 INFO L226 Difference]: Without dead ends: 713 [2020-11-30 02:23:26,257 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 [2020-11-30 02:23:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-11-30 02:23:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2020-11-30 02:23:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-30 02:23:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1020 transitions. [2020-11-30 02:23:26,298 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1020 transitions. Word has length 100 [2020-11-30 02:23:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:26,298 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1020 transitions. [2020-11-30 02:23:26,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1020 transitions. [2020-11-30 02:23:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 02:23:26,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:26,306 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:23:26,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:23:26,306 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash 832576395, now seen corresponding path program 1 times [2020-11-30 02:23:26,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:26,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558097351] [2020-11-30 02:23:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:26,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558097351] [2020-11-30 02:23:26,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:26,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:23:26,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855788834] [2020-11-30 02:23:26,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:23:26,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:23:26,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:23:26,445 INFO L87 Difference]: Start difference. First operand 713 states and 1020 transitions. Second operand 4 states. [2020-11-30 02:23:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:27,161 INFO L93 Difference]: Finished difference Result 1638 states and 2300 transitions. [2020-11-30 02:23:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:23:27,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-30 02:23:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:27,168 INFO L225 Difference]: With dead ends: 1638 [2020-11-30 02:23:27,170 INFO L226 Difference]: Without dead ends: 926 [2020-11-30 02:23:27,172 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 [2020-11-30 02:23:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-30 02:23:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-30 02:23:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-30 02:23:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1186 transitions. [2020-11-30 02:23:27,225 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1186 transitions. Word has length 104 [2020-11-30 02:23:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1186 transitions. [2020-11-30 02:23:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:23:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1186 transitions. [2020-11-30 02:23:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-30 02:23:27,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:27,232 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] [2020-11-30 02:23:27,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:23:27,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1455239238, now seen corresponding path program 1 times [2020-11-30 02:23:27,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:27,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585362298] [2020-11-30 02:23:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:27,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585362298] [2020-11-30 02:23:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:27,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:23:27,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504401257] [2020-11-30 02:23:27,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:23:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:23:27,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:27,665 INFO L87 Difference]: Start difference. First operand 855 states and 1186 transitions. Second operand 5 states. [2020-11-30 02:23:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:28,554 INFO L93 Difference]: Finished difference Result 2206 states and 3045 transitions. [2020-11-30 02:23:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:23:28,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-11-30 02:23:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:28,562 INFO L225 Difference]: With dead ends: 2206 [2020-11-30 02:23:28,562 INFO L226 Difference]: Without dead ends: 1352 [2020-11-30 02:23:28,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-30 02:23:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-30 02:23:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:23:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1554 transitions. [2020-11-30 02:23:28,597 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1554 transitions. Word has length 130 [2020-11-30 02:23:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:28,599 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1554 transitions. [2020-11-30 02:23:28,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:23:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1554 transitions. [2020-11-30 02:23:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-30 02:23:28,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:28,603 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:23:28,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:23:28,605 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1370508181, now seen corresponding path program 1 times [2020-11-30 02:23:28,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:28,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666373314] [2020-11-30 02:23:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 02:23:28,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666373314] [2020-11-30 02:23:28,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:28,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:23:28,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543899957] [2020-11-30 02:23:28,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:28,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:28,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:28,772 INFO L87 Difference]: Start difference. First operand 1139 states and 1554 transitions. Second operand 3 states. [2020-11-30 02:23:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:29,259 INFO L93 Difference]: Finished difference Result 2632 states and 3613 transitions. [2020-11-30 02:23:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:29,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-11-30 02:23:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:29,270 INFO L225 Difference]: With dead ends: 2632 [2020-11-30 02:23:29,270 INFO L226 Difference]: Without dead ends: 1494 [2020-11-30 02:23:29,272 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 [2020-11-30 02:23:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-11-30 02:23:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1210. [2020-11-30 02:23:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-30 02:23:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1666 transitions. [2020-11-30 02:23:29,310 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1666 transitions. Word has length 157 [2020-11-30 02:23:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:29,311 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1666 transitions. [2020-11-30 02:23:29,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1666 transitions. [2020-11-30 02:23:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-30 02:23:29,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:29,318 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] [2020-11-30 02:23:29,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:23:29,319 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:23:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:29,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1182847754, now seen corresponding path program 1 times [2020-11-30 02:23:29,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:29,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427851440] [2020-11-30 02:23:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 92 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-11-30 02:23:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427851440] [2020-11-30 02:23:29,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211218706] [2020-11-30 02:23:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/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 [2020-11-30 02:23:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:29,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:23:29,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:23:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-30 02:23:29,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:23:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-30 02:23:30,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:23:30,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-11-30 02:23:30,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218460656] [2020-11-30 02:23:30,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:30,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:30,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:30,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:30,088 INFO L87 Difference]: Start difference. First operand 1210 states and 1666 transitions. Second operand 3 states. [2020-11-30 02:23:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:30,802 INFO L93 Difference]: Finished difference Result 2417 states and 3330 transitions. [2020-11-30 02:23:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:30,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-11-30 02:23:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:30,804 INFO L225 Difference]: With dead ends: 2417 [2020-11-30 02:23:30,804 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:23:30,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:23:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:23:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:23:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:23:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:23:30,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2020-11-30 02:23:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:30,808 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:23:30,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:23:30,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:23:31,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 02:23:31,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:23:31,254 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-11-30 02:23:31,376 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2020-11-30 02:23:31,380 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 02:23:31,381 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 02:23:31,382 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 02:23:31,383 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (or (not (= ~a8~0 13)) (<= ~a21~0 0) (and (= ~a21~0 1) (= ~a20~0 1) (= ~a17~0 1)) (and (<= ~a16~0 5) (not (= ~a7~0 1)))) [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:23:31,384 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 02:23:31,385 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 02:23:31,386 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (or (not (= ~a8~0 13)) (<= ~a21~0 0) (and (= ~a21~0 1) (= ~a20~0 1) (= ~a17~0 1)) (and (<= ~a16~0 5) (not (= ~a7~0 1)))) [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 02:23:31,387 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 02:23:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:23:31 BoogieIcfgContainer [2020-11-30 02:23:31,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:23:31,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:23:31,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:23:31,427 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:23:31,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:21" (3/4) ... [2020-11-30 02:23:31,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:23:31,465 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-30 02:23:31,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:23:31,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:23:31,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:23:31,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1db2fde7-a94e-4bfa-8365-ff9297b6a17d/bin/utaipan/witness.graphml [2020-11-30 02:23:31,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:23:31,664 INFO L168 Benchmark]: Toolchain (without parser) took 14117.78 ms. Allocated memory was 90.2 MB in the beginning and 243.3 MB in the end (delta: 153.1 MB). Free memory was 53.6 MB in the beginning and 110.9 MB in the end (delta: -57.3 MB). Peak memory consumption was 95.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,664 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 63.3 MB in the beginning and 63.3 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:31,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.59 ms. Allocated memory is still 90.2 MB. Free memory was 53.4 MB in the beginning and 49.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.31 ms. Allocated memory is still 90.2 MB. Free memory was 49.1 MB in the beginning and 43.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,665 INFO L168 Benchmark]: Boogie Preprocessor took 100.92 ms. Allocated memory is still 90.2 MB. Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,666 INFO L168 Benchmark]: RCFGBuilder took 3011.75 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 39.0 MB in the beginning and 83.3 MB in the end (delta: -44.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,666 INFO L168 Benchmark]: TraceAbstraction took 9807.75 ms. Allocated memory was 132.1 MB in the beginning and 243.3 MB in the end (delta: 111.1 MB). Free memory was 82.3 MB in the beginning and 126.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,667 INFO L168 Benchmark]: Witness Printer took 235.85 ms. Allocated memory is still 243.3 MB. Free memory was 125.6 MB in the beginning and 110.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:31,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 63.3 MB in the beginning and 63.3 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 809.59 ms. Allocated memory is still 90.2 MB. Free memory was 53.4 MB in the beginning and 49.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 145.31 ms. Allocated memory is still 90.2 MB. Free memory was 49.1 MB in the beginning and 43.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.92 ms. Allocated memory is still 90.2 MB. Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3011.75 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 39.0 MB in the beginning and 83.3 MB in the end (delta: -44.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9807.75 ms. Allocated memory was 132.1 MB in the beginning and 243.3 MB in the end (delta: 111.1 MB). Free memory was 82.3 MB in the beginning and 126.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. * Witness Printer took 235.85 ms. Allocated memory is still 243.3 MB. Free memory was 125.6 MB in the beginning and 110.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: ((!(a8 == 13) || a21 <= 0) || ((a21 == 1 && a20 == 1) && a17 == 1)) || (a16 <= 5 && !(a7 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((!(a8 == 13) || a21 <= 0) || ((a21 == 1 && a20 == 1) && a17 == 1)) || (a16 <= 5 && !(a7 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 690 SDslu, 49 SDs, 0 SdLazy, 2516 SolverSat, 642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=9, 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, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 53 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4998 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1333 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1543 ConstructedInterpolants, 0 QuantifiedInterpolants, 799870 SizeOfPredicates, 1 NumberOfNonLiveVariables, 474 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 1148/1240 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...