./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.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_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/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 a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:41:17,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:17,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:17,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:17,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:17,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:17,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:17,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:17,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:17,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:17,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:17,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:17,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:17,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:17,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:17,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:17,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:17,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:17,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:17,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:17,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:17,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:17,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:17,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:17,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:17,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:17,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:17,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:17,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:17,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:17,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:17,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:17,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:17,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:17,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:17,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:17,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:17,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:17,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:17,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:17,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:17,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:41:17,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:17,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:17,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:17,142 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:17,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:17,151 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:17,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:17,151 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:17,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:17,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:17,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:17,153 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:17,153 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:17,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:17,154 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:17,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:17,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:17,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:17,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:17,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:17,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:17,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:17,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:17,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:17,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:17,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:17,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:17,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:17,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:17,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:17,161 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_a2426db5-2582-4da9-9852-de9d880e0885/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fd3bf4b32d34628b01b5d29cc6df1452a2d1c7 [2020-11-28 07:41:17,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:17,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:17,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:17,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:17,536 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:17,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-11-28 07:41:17,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/data/07403eb72/bb176f9a2a3b467f8111c58433ae962c/FLAG7d6885890 [2020-11-28 07:41:18,161 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:18,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2020-11-28 07:41:18,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/data/07403eb72/bb176f9a2a3b467f8111c58433ae962c/FLAG7d6885890 [2020-11-28 07:41:18,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/data/07403eb72/bb176f9a2a3b467f8111c58433ae962c [2020-11-28 07:41:18,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:18,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:18,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:18,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:18,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:18,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:18" (1/1) ... [2020-11-28 07:41:18,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a95cc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:18, skipping insertion in model container [2020-11-28 07:41:18,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:18" (1/1) ... [2020-11-28 07:41:18,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:18,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:18,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:18,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:19,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:19,096 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:19,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19 WrapperNode [2020-11-28 07:41:19,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:19,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:19,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:19,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:19,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:19,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:19,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:19,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:19,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... [2020-11-28 07:41:19,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:19,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:19,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:19,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:19,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:22,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:22,121 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:41:22,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:22 BoogieIcfgContainer [2020-11-28 07:41:22,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:22,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:22,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:22,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:22,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:18" (1/3) ... [2020-11-28 07:41:22,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70931e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:22, skipping insertion in model container [2020-11-28 07:41:22,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:19" (2/3) ... [2020-11-28 07:41:22,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70931e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:22, skipping insertion in model container [2020-11-28 07:41:22,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:22" (3/3) ... [2020-11-28 07:41:22,136 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-11-28 07:41:22,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:22,158 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:22,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:41:22,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:22,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:22,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:22,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:22,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:22,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:22,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:22,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:41:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:41:22,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:22,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:22,267 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:22,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:22,276 INFO L82 PathProgramCache]: Analyzing trace with hash -216536816, now seen corresponding path program 1 times [2020-11-28 07:41:22,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:22,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669257798] [2020-11-28 07:41:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:22,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669257798] [2020-11-28 07:41:22,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:22,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661892620] [2020-11-28 07:41:22,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:22,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:22,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:22,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:22,803 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:41:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:23,536 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:41:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:23,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:41:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:23,556 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:41:23,556 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:41:23,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:23,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:41:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:41:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:41:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-28 07:41:23,611 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-28 07:41:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:23,612 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-28 07:41:23,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-28 07:41:23,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:41:23,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:23,617 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:23,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:23,618 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:23,619 INFO L82 PathProgramCache]: Analyzing trace with hash -125425685, now seen corresponding path program 1 times [2020-11-28 07:41:23,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:23,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053529206] [2020-11-28 07:41:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:23,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053529206] [2020-11-28 07:41:23,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:23,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681331433] [2020-11-28 07:41:23,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:23,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:23,793 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-28 07:41:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:24,372 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2020-11-28 07:41:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:24,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:41:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:24,377 INFO L225 Difference]: With dead ends: 405 [2020-11-28 07:41:24,377 INFO L226 Difference]: Without dead ends: 243 [2020-11-28 07:41:24,379 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 07:41:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-28 07:41:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-28 07:41:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 07:41:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 398 transitions. [2020-11-28 07:41:24,419 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 398 transitions. Word has length 85 [2020-11-28 07:41:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:24,420 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 398 transitions. [2020-11-28 07:41:24,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 398 transitions. [2020-11-28 07:41:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:41:24,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:24,425 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-11-28 07:41:24,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:41:24,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash 97036085, now seen corresponding path program 1 times [2020-11-28 07:41:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:24,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416008272] [2020-11-28 07:41:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:24,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416008272] [2020-11-28 07:41:24,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174521062] [2020-11-28 07:41:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:24,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:24,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:41:24,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:41:24,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:25,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:41:25,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182965370] [2020-11-28 07:41:25,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:25,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:25,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:25,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:25,009 INFO L87 Difference]: Start difference. First operand 243 states and 398 transitions. Second operand 3 states. [2020-11-28 07:41:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:25,701 INFO L93 Difference]: Finished difference Result 725 states and 1191 transitions. [2020-11-28 07:41:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:25,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:41:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:25,706 INFO L225 Difference]: With dead ends: 725 [2020-11-28 07:41:25,706 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:41:25,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:41:25,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:41:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:41:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 758 transitions. [2020-11-28 07:41:25,740 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 758 transitions. Word has length 89 [2020-11-28 07:41:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:25,741 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 758 transitions. [2020-11-28 07:41:25,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:25,741 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 758 transitions. [2020-11-28 07:41:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:41:25,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:25,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:25,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:41:25,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1698413543, now seen corresponding path program 1 times [2020-11-28 07:41:25,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:25,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938980441] [2020-11-28 07:41:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:41:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938980441] [2020-11-28 07:41:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843701134] [2020-11-28 07:41:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:26,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:41:26,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:41:26,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:26,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-28 07:41:26,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544437957] [2020-11-28 07:41:26,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:26,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:26,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:26,248 INFO L87 Difference]: Start difference. First operand 483 states and 758 transitions. Second operand 4 states. [2020-11-28 07:41:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:27,008 INFO L93 Difference]: Finished difference Result 1125 states and 1790 transitions. [2020-11-28 07:41:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:27,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-28 07:41:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:27,013 INFO L225 Difference]: With dead ends: 1125 [2020-11-28 07:41:27,013 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:41:27,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:41:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:41:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:41:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 943 transitions. [2020-11-28 07:41:27,064 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 943 transitions. Word has length 98 [2020-11-28 07:41:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:27,066 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 943 transitions. [2020-11-28 07:41:27,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 943 transitions. [2020-11-28 07:41:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-28 07:41:27,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:27,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:27,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:27,303 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:27,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1884255565, now seen corresponding path program 1 times [2020-11-28 07:41:27,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:27,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262524216] [2020-11-28 07:41:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:41:27,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262524216] [2020-11-28 07:41:27,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:27,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:27,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458857487] [2020-11-28 07:41:27,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:27,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:27,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:27,365 INFO L87 Difference]: Start difference. First operand 643 states and 943 transitions. Second operand 3 states. [2020-11-28 07:41:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:27,927 INFO L93 Difference]: Finished difference Result 1845 states and 2695 transitions. [2020-11-28 07:41:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:27,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-28 07:41:27,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:27,935 INFO L225 Difference]: With dead ends: 1845 [2020-11-28 07:41:27,935 INFO L226 Difference]: Without dead ends: 1203 [2020-11-28 07:41:27,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-28 07:41:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-11-28 07:41:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-28 07:41:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1613 transitions. [2020-11-28 07:41:27,970 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1613 transitions. Word has length 99 [2020-11-28 07:41:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:27,971 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1613 transitions. [2020-11-28 07:41:27,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1613 transitions. [2020-11-28 07:41:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:41:27,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:27,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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, 1, 1, 1, 1] [2020-11-28 07:41:27,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:41:27,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1362970799, now seen corresponding path program 1 times [2020-11-28 07:41:27,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:27,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657925790] [2020-11-28 07:41:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-28 07:41:28,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657925790] [2020-11-28 07:41:28,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296773085] [2020-11-28 07:41:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:28,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:28,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-28 07:41:28,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-28 07:41:28,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:28,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:41:28,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347051504] [2020-11-28 07:41:28,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:28,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:28,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:28,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:28,232 INFO L87 Difference]: Start difference. First operand 1203 states and 1613 transitions. Second operand 3 states. [2020-11-28 07:41:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:28,532 INFO L93 Difference]: Finished difference Result 2325 states and 3100 transitions. [2020-11-28 07:41:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:28,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-11-28 07:41:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:28,539 INFO L225 Difference]: With dead ends: 2325 [2020-11-28 07:41:28,539 INFO L226 Difference]: Without dead ends: 1123 [2020-11-28 07:41:28,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-28 07:41:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-11-28 07:41:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-28 07:41:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1433 transitions. [2020-11-28 07:41:28,575 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1433 transitions. Word has length 104 [2020-11-28 07:41:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:28,575 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1433 transitions. [2020-11-28 07:41:28,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1433 transitions. [2020-11-28 07:41:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-28 07:41:28,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:28,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:28,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:28,795 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1863115076, now seen corresponding path program 1 times [2020-11-28 07:41:28,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:28,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959114420] [2020-11-28 07:41:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:41:28,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959114420] [2020-11-28 07:41:28,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5627387] [2020-11-28 07:41:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:29,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:29,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:41:29,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:41:29,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:41:29,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:41:29,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554608943] [2020-11-28 07:41:29,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:29,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:29,165 INFO L87 Difference]: Start difference. First operand 1123 states and 1433 transitions. Second operand 3 states. [2020-11-28 07:41:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:29,587 INFO L93 Difference]: Finished difference Result 2485 states and 3195 transitions. [2020-11-28 07:41:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:29,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-28 07:41:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:29,596 INFO L225 Difference]: With dead ends: 2485 [2020-11-28 07:41:29,596 INFO L226 Difference]: Without dead ends: 1363 [2020-11-28 07:41:29,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:41:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-11-28 07:41:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2020-11-28 07:41:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-11-28 07:41:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1683 transitions. [2020-11-28 07:41:29,640 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1683 transitions. Word has length 122 [2020-11-28 07:41:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:29,640 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1683 transitions. [2020-11-28 07:41:29,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1683 transitions. [2020-11-28 07:41:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-28 07:41:29,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:29,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:29,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:41:29,859 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1300351849, now seen corresponding path program 1 times [2020-11-28 07:41:29,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:29,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807483518] [2020-11-28 07:41:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 07:41:29,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807483518] [2020-11-28 07:41:29,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:29,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:29,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311111939] [2020-11-28 07:41:29,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:29,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:29,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:29,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:29,940 INFO L87 Difference]: Start difference. First operand 1363 states and 1683 transitions. Second operand 3 states. [2020-11-28 07:41:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:30,327 INFO L93 Difference]: Finished difference Result 3283 states and 4044 transitions. [2020-11-28 07:41:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:30,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-28 07:41:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:30,328 INFO L225 Difference]: With dead ends: 3283 [2020-11-28 07:41:30,328 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:30,331 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 07:41:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:30,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2020-11-28 07:41:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:30,333 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:30,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:30,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:30,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:41:30,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:41:30,444 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:41:30,445 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:41:30,446 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:41:30,447 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L593(line 593) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:41:30,448 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:41:30,449 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:41:30,451 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-11-28 07:41:30,451 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:41:30,451 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:41:30,451 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:30,452 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:41:30,453 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:41:30,453 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a19~0 1) (= ~a25~0 1) .cse0))) [2020-11-28 07:41:30,453 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:41:30,453 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:41:30,453 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:41:30,453 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:41:30,454 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:41:30,455 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:41:30,455 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:41:30,455 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:41:30,455 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:41:30,455 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:41:30,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:30 BoogieIcfgContainer [2020-11-28 07:41:30,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:30,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:30,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:30,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:30,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:22" (3/4) ... [2020-11-28 07:41:30,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:30,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:41:30,502 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:41:30,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:41:30,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:41:30,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a2426db5-2582-4da9-9852-de9d880e0885/bin/utaipan/witness.graphml [2020-11-28 07:41:30,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:30,677 INFO L168 Benchmark]: Toolchain (without parser) took 12266.51 ms. Allocated memory was 83.9 MB in the beginning and 239.1 MB in the end (delta: 155.2 MB). Free memory was 41.2 MB in the beginning and 206.6 MB in the end (delta: -165.4 MB). Peak memory consumption was 128.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,678 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:30,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.70 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 49.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.44 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 44.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,679 INFO L168 Benchmark]: Boogie Preprocessor took 93.77 ms. Allocated memory is still 83.9 MB. Free memory was 44.1 MB in the beginning and 39.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,679 INFO L168 Benchmark]: RCFGBuilder took 2831.26 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 39.9 MB in the beginning and 39.1 MB in the end (delta: 728.7 kB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,680 INFO L168 Benchmark]: TraceAbstraction took 8345.85 ms. Allocated memory was 121.6 MB in the beginning and 239.1 MB in the end (delta: 117.4 MB). Free memory was 38.1 MB in the beginning and 84.2 MB in the end (delta: -46.2 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,680 INFO L168 Benchmark]: Witness Printer took 202.18 ms. Allocated memory is still 239.1 MB. Free memory was 84.2 MB in the beginning and 206.6 MB in the end (delta: -122.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:30,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 682.70 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 49.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.44 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 44.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.77 ms. Allocated memory is still 83.9 MB. Free memory was 44.1 MB in the beginning and 39.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2831.26 ms. Allocated memory was 83.9 MB in the beginning and 121.6 MB in the end (delta: 37.7 MB). Free memory was 39.9 MB in the beginning and 39.1 MB in the end (delta: 728.7 kB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8345.85 ms. Allocated memory was 121.6 MB in the beginning and 239.1 MB in the end (delta: 117.4 MB). Free memory was 38.1 MB in the beginning and 84.2 MB in the end (delta: -46.2 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. * Witness Printer took 202.18 ms. Allocated memory is still 239.1 MB. Free memory was 84.2 MB in the beginning and 206.6 MB in the end (delta: -122.3 MB). Peak memory consumption was 15.0 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: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (a17 <= 8 && a28 <= 10) || ((a19 == 1 && 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: 8.1s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 505 SDtfs, 719 SDslu, 40 SDs, 0 SdLazy, 1880 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 841 GetRequests, 820 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 628 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1616 ConstructedInterpolants, 0 QuantifiedInterpolants, 330670 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1264 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 531/553 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...