./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label34.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_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label34.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/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 0a1cc7881130b406d1d951279b5fe9bb2a9beea4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:28:21,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:21,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:21,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:21,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:21,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:21,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:21,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:21,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:21,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:21,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:21,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:21,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:22,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:22,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:22,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:22,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:22,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:22,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:22,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:22,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:22,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:22,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:22,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:22,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:22,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:22,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:22,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:22,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:22,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:22,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:22,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:22,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:22,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:22,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:22,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:22,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:22,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:22,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:22,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:22,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:22,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:22,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:22,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:22,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:22,090 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:22,090 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:22,090 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:22,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:22,090 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:22,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:22,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:22,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:22,092 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:22,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:22,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:22,093 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:22,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:22,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:22,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:22,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:22,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:22,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:22,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:22,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:22,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:22,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:22,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:22,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:22,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:22,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:22,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:22,099 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:22,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:22,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:22,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:22,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:22,099 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_55697333-6cd9-4a94-99a2-17bf8eb91261/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a1cc7881130b406d1d951279b5fe9bb2a9beea4 [2020-11-28 07:28:22,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:22,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:22,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:22,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:22,423 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:22,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label34.c [2020-11-28 07:28:22,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/data/372bfd335/dd7c6279de234f3abc2aa6c3e3551a06/FLAG4c55dea56 [2020-11-28 07:28:23,123 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:23,124 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/sv-benchmarks/c/eca-rers2012/Problem02_label34.c [2020-11-28 07:28:23,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/data/372bfd335/dd7c6279de234f3abc2aa6c3e3551a06/FLAG4c55dea56 [2020-11-28 07:28:23,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/data/372bfd335/dd7c6279de234f3abc2aa6c3e3551a06 [2020-11-28 07:28:23,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:23,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:23,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:23,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:23,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:23,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:23" (1/1) ... [2020-11-28 07:28:23,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207ef1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:23, skipping insertion in model container [2020-11-28 07:28:23,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:23" (1/1) ... [2020-11-28 07:28:23,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:23,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:23,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:23,965 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:24,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:24,147 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:24,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24 WrapperNode [2020-11-28 07:28:24,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:24,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:24,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:24,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:24,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:24,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:24,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:24,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:24,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... [2020-11-28 07:28:24,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:24,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:24,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:24,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:24,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/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 07:28:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:24,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:24,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:27,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:27,465 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:28:27,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27 BoogieIcfgContainer [2020-11-28 07:28:27,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:27,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:27,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:27,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:27,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:23" (1/3) ... [2020-11-28 07:28:27,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2aa03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:27, skipping insertion in model container [2020-11-28 07:28:27,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:24" (2/3) ... [2020-11-28 07:28:27,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2aa03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:27, skipping insertion in model container [2020-11-28 07:28:27,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27" (3/3) ... [2020-11-28 07:28:27,484 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-11-28 07:28:27,498 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:27,504 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:27,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:27,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:27,548 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:27,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:27,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:27,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:27,549 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:27,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:27,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:28:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:28:27,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:27,578 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 07:28:27,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash -216555449, now seen corresponding path program 1 times [2020-11-28 07:28:27,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:27,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300520351] [2020-11-28 07:28:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:28,022 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 07:28:28,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300520351] [2020-11-28 07:28:28,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:28,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:28,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347748104] [2020-11-28 07:28:28,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:28,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:28,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:28,045 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:28:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:28,672 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:28:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:28,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:28:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:28,689 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:28:28,689 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:28:28,694 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 07:28:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:28:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:28:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:28:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-28 07:28:28,786 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-28 07:28:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:28,787 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-28 07:28:28,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-28 07:28:28,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:28:28,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:28,792 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 07:28:28,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:28,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash -215867375, now seen corresponding path program 1 times [2020-11-28 07:28:28,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:28,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235628383] [2020-11-28 07:28:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:28,881 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 07:28:28,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235628383] [2020-11-28 07:28:28,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:28,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:28,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099484192] [2020-11-28 07:28:28,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:28,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:28,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:28,890 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-28 07:28:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:29,173 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-28 07:28:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:29,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:28:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:29,176 INFO L225 Difference]: With dead ends: 325 [2020-11-28 07:28:29,177 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:28:29,179 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 07:28:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:28:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:28:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:28:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-28 07:28:29,192 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-28 07:28:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:29,193 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-28 07:28:29,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-28 07:28:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:28:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:29,199 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:29,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:28:29,199 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:29,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1467809060, now seen corresponding path program 1 times [2020-11-28 07:28:29,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:29,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346043922] [2020-11-28 07:28:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:29,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346043922] [2020-11-28 07:28:29,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:29,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:29,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29598298] [2020-11-28 07:28:29,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:29,297 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-28 07:28:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:30,140 INFO L93 Difference]: Finished difference Result 487 states and 847 transitions. [2020-11-28 07:28:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:30,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-28 07:28:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:30,144 INFO L225 Difference]: With dead ends: 487 [2020-11-28 07:28:30,144 INFO L226 Difference]: Without dead ends: 325 [2020-11-28 07:28:30,145 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 07:28:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-11-28 07:28:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-11-28 07:28:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:28:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 534 transitions. [2020-11-28 07:28:30,165 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 534 transitions. Word has length 98 [2020-11-28 07:28:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:30,165 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 534 transitions. [2020-11-28 07:28:30,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 534 transitions. [2020-11-28 07:28:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-28 07:28:30,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:30,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:30,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:28:30,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1495844841, now seen corresponding path program 1 times [2020-11-28 07:28:30,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:30,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35881091] [2020-11-28 07:28:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:28:30,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35881091] [2020-11-28 07:28:30,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:30,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:30,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252284445] [2020-11-28 07:28:30,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:30,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:30,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:30,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:30,235 INFO L87 Difference]: Start difference. First operand 323 states and 534 transitions. Second operand 3 states. [2020-11-28 07:28:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:30,842 INFO L93 Difference]: Finished difference Result 805 states and 1333 transitions. [2020-11-28 07:28:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:30,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-28 07:28:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:30,846 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:28:30,847 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:28:30,849 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 07:28:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:28:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:28:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:28:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 714 transitions. [2020-11-28 07:28:30,900 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 714 transitions. Word has length 102 [2020-11-28 07:28:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:30,903 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 714 transitions. [2020-11-28 07:28:30,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 714 transitions. [2020-11-28 07:28:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:28:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:30,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:30,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:28:30,913 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1095831730, now seen corresponding path program 1 times [2020-11-28 07:28:30,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:30,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342131695] [2020-11-28 07:28:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-28 07:28:30,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342131695] [2020-11-28 07:28:30,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939371741] [2020-11-28 07:28:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/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 07:28:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:31,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:28:31,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:28:31,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:28:31,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:28:31,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-28 07:28:31,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637903367] [2020-11-28 07:28:31,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:28:31,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:28:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:31,348 INFO L87 Difference]: Start difference. First operand 483 states and 714 transitions. Second operand 4 states. [2020-11-28 07:28:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:32,371 INFO L93 Difference]: Finished difference Result 1125 states and 1742 transitions. [2020-11-28 07:28:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:32,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-11-28 07:28:32,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:32,376 INFO L225 Difference]: With dead ends: 1125 [2020-11-28 07:28:32,376 INFO L226 Difference]: Without dead ends: 723 [2020-11-28 07:28:32,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-28 07:28:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-28 07:28:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:28:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1034 transitions. [2020-11-28 07:28:32,413 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1034 transitions. Word has length 107 [2020-11-28 07:28:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:32,414 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1034 transitions. [2020-11-28 07:28:32,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:28:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1034 transitions. [2020-11-28 07:28:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:28:32,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:32,418 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:32,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:32,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1280990217, now seen corresponding path program 1 times [2020-11-28 07:28:32,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:32,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441418974] [2020-11-28 07:28:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:32,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441418974] [2020-11-28 07:28:32,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081588751] [2020-11-28 07:28:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/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 07:28:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:33,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:28:33,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:28:33,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:28:33,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:28:33,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:28:33,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127112367] [2020-11-28 07:28:33,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:33,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:33,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:33,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:33,167 INFO L87 Difference]: Start difference. First operand 723 states and 1034 transitions. Second operand 3 states. [2020-11-28 07:28:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:33,665 INFO L93 Difference]: Finished difference Result 1365 states and 1977 transitions. [2020-11-28 07:28:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:33,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:28:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:33,671 INFO L225 Difference]: With dead ends: 1365 [2020-11-28 07:28:33,671 INFO L226 Difference]: Without dead ends: 723 [2020-11-28 07:28:33,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-28 07:28:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-11-28 07:28:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:28:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 813 transitions. [2020-11-28 07:28:33,704 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 813 transitions. Word has length 107 [2020-11-28 07:28:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:33,704 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 813 transitions. [2020-11-28 07:28:33,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 813 transitions. [2020-11-28 07:28:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-11-28 07:28:33,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:33,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:33,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:33,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:33,938 INFO L82 PathProgramCache]: Analyzing trace with hash 876783994, now seen corresponding path program 1 times [2020-11-28 07:28:33,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:33,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945127311] [2020-11-28 07:28:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:28:34,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945127311] [2020-11-28 07:28:34,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:34,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:34,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244128606] [2020-11-28 07:28:34,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:34,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:34,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:34,041 INFO L87 Difference]: Start difference. First operand 643 states and 813 transitions. Second operand 3 states. [2020-11-28 07:28:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:34,507 INFO L93 Difference]: Finished difference Result 1525 states and 1945 transitions. [2020-11-28 07:28:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:34,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-11-28 07:28:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:34,513 INFO L225 Difference]: With dead ends: 1525 [2020-11-28 07:28:34,514 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:28:34,515 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 07:28:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:28:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-28 07:28:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-28 07:28:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 935 transitions. [2020-11-28 07:28:34,540 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 935 transitions. Word has length 116 [2020-11-28 07:28:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:34,541 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 935 transitions. [2020-11-28 07:28:34,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 935 transitions. [2020-11-28 07:28:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-28 07:28:34,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:34,545 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:34,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:28:34,545 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -788650231, now seen corresponding path program 1 times [2020-11-28 07:28:34,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:34,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165996177] [2020-11-28 07:28:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:28:34,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165996177] [2020-11-28 07:28:34,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:34,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:34,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429552884] [2020-11-28 07:28:34,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:34,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:34,687 INFO L87 Difference]: Start difference. First operand 803 states and 935 transitions. Second operand 3 states. [2020-11-28 07:28:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:35,094 INFO L93 Difference]: Finished difference Result 1523 states and 1784 transitions. [2020-11-28 07:28:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:35,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-28 07:28:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:35,095 INFO L225 Difference]: With dead ends: 1523 [2020-11-28 07:28:35,095 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:35,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:35,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-11-28 07:28:35,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:35,098 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:35,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:35,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:35,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:35,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:28:35,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:35,304 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-28 07:28:35,445 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:28:35,448 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:28:35,449 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:28:35,450 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:28:35,451 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:28:35,452 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 0)) (.cse2 (<= ~a28~0 9)) (.cse4 (<= 10 ~a28~0)) (.cse5 (< ~a28~0 11)) (.cse7 (= ~a19~0 1)) (.cse1 (<= 8 ~a17~0)) (.cse6 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse3) (and .cse1 .cse6 .cse5 .cse3) (and .cse6 .cse2 .cse3) (and .cse7 .cse4 .cse1 .cse5 .cse3) (and .cse7 .cse1 .cse6 .cse3))) [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:28:35,453 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:28:35,453 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 0)) (.cse2 (<= ~a28~0 9)) (.cse4 (<= 10 ~a28~0)) (.cse5 (< ~a28~0 11)) (.cse7 (= ~a19~0 1)) (.cse1 (<= 8 ~a17~0)) (.cse6 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse3) (and .cse1 .cse6 .cse5 .cse3) (and .cse6 .cse2 .cse3) (and .cse7 .cse4 .cse1 .cse5 .cse3) (and .cse7 .cse1 .cse6 .cse3))) [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:28:35,454 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:28:35,455 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:28:35,456 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:28:35,456 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:28:35,456 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:28:35,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:35 BoogieIcfgContainer [2020-11-28 07:28:35,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:35,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:35,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:35,502 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:35,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27" (3/4) ... [2020-11-28 07:28:35,506 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:35,542 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:28:35,544 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:28:35,546 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:28:35,548 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:28:35,798 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55697333-6cd9-4a94-99a2-17bf8eb91261/bin/utaipan/witness.graphml [2020-11-28 07:28:35,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:35,800 INFO L168 Benchmark]: Toolchain (without parser) took 12414.52 ms. Allocated memory was 88.1 MB in the beginning and 260.0 MB in the end (delta: 172.0 MB). Free memory was 51.3 MB in the beginning and 99.0 MB in the end (delta: -47.7 MB). Peak memory consumption was 124.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,801 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:35,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.45 ms. Allocated memory is still 88.1 MB. Free memory was 51.1 MB in the beginning and 48.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.98 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 43.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,803 INFO L168 Benchmark]: Boogie Preprocessor took 87.74 ms. Allocated memory is still 88.1 MB. Free memory was 43.6 MB in the beginning and 39.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,804 INFO L168 Benchmark]: RCFGBuilder took 3115.83 ms. Allocated memory was 88.1 MB in the beginning and 176.2 MB in the end (delta: 88.1 MB). Free memory was 39.1 MB in the beginning and 90.4 MB in the end (delta: -51.3 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,804 INFO L168 Benchmark]: TraceAbstraction took 8027.94 ms. Allocated memory was 176.2 MB in the beginning and 260.0 MB in the end (delta: 83.9 MB). Free memory was 90.4 MB in the beginning and 114.8 MB in the end (delta: -24.4 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,805 INFO L168 Benchmark]: Witness Printer took 296.76 ms. Allocated memory is still 260.0 MB. Free memory was 114.8 MB in the beginning and 99.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:35,808 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 88.1 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 763.45 ms. Allocated memory is still 88.1 MB. Free memory was 51.1 MB in the beginning and 48.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.98 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 43.6 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.74 ms. Allocated memory is still 88.1 MB. Free memory was 43.6 MB in the beginning and 39.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3115.83 ms. Allocated memory was 88.1 MB in the beginning and 176.2 MB in the end (delta: 88.1 MB). Free memory was 39.1 MB in the beginning and 90.4 MB in the end (delta: -51.3 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8027.94 ms. Allocated memory was 176.2 MB in the beginning and 260.0 MB in the end (delta: 83.9 MB). Free memory was 90.4 MB in the beginning and 114.8 MB in the end (delta: -24.4 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. * Witness Printer took 296.76 ms. Allocated memory is still 260.0 MB. Free memory was 114.8 MB in the beginning and 99.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 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: (((((((a25 == 0 && 8 <= a17) && a28 <= 9) && a17 <= 8) || (((a25 == 0 && 10 <= a28) && a28 < 11) && a17 <= 8)) || (((8 <= a17 && a25 == 1) && a28 < 11) && a17 <= 8)) || ((a25 == 1 && a28 <= 9) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a28 < 11) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a25 == 0 && 8 <= a17) && a28 <= 9) && a17 <= 8) || (((a25 == 0 && 10 <= a28) && a28 < 11) && a17 <= 8)) || (((8 <= a17 && a25 == 1) && a28 < 11) && a17 <= 8)) || ((a25 == 1 && a28 <= 9) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a28 < 11) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 387 SDtfs, 650 SDslu, 51 SDs, 0 SdLazy, 1763 SolverSat, 468 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=803occurred in iteration=7, 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, 8 MinimizatonAttempts, 82 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 159 HoareAnnotationTreeSize, 3 FomulaSimplifications, 272 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1054 NumberOfCodeBlocks, 1054 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 380778 SizeOfPredicates, 1 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 387/406 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...