./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/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 bd7ba16d04093e753a822e0fa558e457a069d870 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:57:39,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:57:39,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:57:39,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:57:39,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:57:39,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:57:39,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:57:39,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:57:39,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:57:39,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:57:39,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:57:39,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:57:39,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:57:39,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:57:39,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:57:39,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:57:39,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:57:39,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:57:39,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:57:39,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:57:39,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:57:39,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:57:39,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:57:39,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:57:39,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:57:39,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:57:39,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:57:39,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:57:39,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:57:39,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:57:39,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:57:39,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:57:39,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:57:39,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:57:39,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:57:39,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:57:39,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:57:39,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:57:39,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:57:39,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:57:39,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:57:39,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:57:39,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:57:39,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:57:39,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:57:39,292 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:57:39,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:57:39,292 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:57:39,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:57:39,293 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:57:39,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:57:39,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:57:39,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:57:39,293 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:57:39,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:57:39,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:57:39,294 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:57:39,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:57:39,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:57:39,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:57:39,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:57:39,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:57:39,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:57:39,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:57:39,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:57:39,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:57:39,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:57:39,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:57:39,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:57:39,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:57:39,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:57:39,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:57:39,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:57:39,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:57:39,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:57:39,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:57:39,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:57:39,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:57:39,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:57:39,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:57:39,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:57:39,299 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_1d01bae5-4543-4072-8179-4b95595bf0df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd7ba16d04093e753a822e0fa558e457a069d870 [2020-12-09 11:57:39,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:57:39,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:57:39,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:57:39,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:57:39,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:57:39,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label10.c [2020-12-09 11:57:39,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/data/8ea3ee028/c302c065c5424e0d8cf3fa9f1b7563f2/FLAG3825db322 [2020-12-09 11:57:39,996 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:57:39,996 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/sv-benchmarks/c/eca-rers2012/Problem01_label10.c [2020-12-09 11:57:40,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/data/8ea3ee028/c302c065c5424e0d8cf3fa9f1b7563f2/FLAG3825db322 [2020-12-09 11:57:40,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/data/8ea3ee028/c302c065c5424e0d8cf3fa9f1b7563f2 [2020-12-09 11:57:40,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:57:40,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:57:40,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:57:40,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:57:40,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:57:40,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b34b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40, skipping insertion in model container [2020-12-09 11:57:40,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:57:40,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:57:40,282 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/sv-benchmarks/c/eca-rers2012/Problem01_label10.c[19224,19237] [2020-12-09 11:57:40,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:57:40,307 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:57:40,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/sv-benchmarks/c/eca-rers2012/Problem01_label10.c[19224,19237] [2020-12-09 11:57:40,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:57:40,381 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:57:40,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40 WrapperNode [2020-12-09 11:57:40,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:57:40,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:57:40,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:57:40,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:57:40,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:57:40,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:57:40,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:57:40,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:57:40,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... [2020-12-09 11:57:40,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:57:40,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:57:40,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:57:40,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:57:40,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/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 [2020-12-09 11:57:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:57:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:57:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:57:40,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:57:41,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:57:41,811 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 11:57:41,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:57:41 BoogieIcfgContainer [2020-12-09 11:57:41,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:57:41,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:57:41,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:57:41,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:57:41,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:57:40" (1/3) ... [2020-12-09 11:57:41,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543908b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:57:41, skipping insertion in model container [2020-12-09 11:57:41,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:57:40" (2/3) ... [2020-12-09 11:57:41,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543908b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:57:41, skipping insertion in model container [2020-12-09 11:57:41,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:57:41" (3/3) ... [2020-12-09 11:57:41,821 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-12-09 11:57:41,835 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:57:41,838 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:57:41,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:57:41,871 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:57:41,871 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:57:41,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:57:41,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:57:41,872 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:57:41,872 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:57:41,872 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:57:41,872 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:57:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 11:57:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 11:57:41,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:57:41,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:57:41,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:57:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:57:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1806909528, now seen corresponding path program 1 times [2020-12-09 11:57:41,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:57:41,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587076528] [2020-12-09 11:57:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:57:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:57:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:57:42,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587076528] [2020-12-09 11:57:42,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:57:42,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:57:42,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646239963] [2020-12-09 11:57:42,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:57:42,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:57:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:57:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:57:42,214 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 11:57:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:57:42,528 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 11:57:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:57:42,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 11:57:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:57:42,541 INFO L225 Difference]: With dead ends: 224 [2020-12-09 11:57:42,541 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 11:57:42,543 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 [2020-12-09 11:57:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 11:57:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 11:57:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 11:57:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2020-12-09 11:57:42,578 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2020-12-09 11:57:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:57:42,578 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2020-12-09 11:57:42,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:57:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2020-12-09 11:57:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 11:57:42,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:57:42,581 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] [2020-12-09 11:57:42,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:57:42,581 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:57:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:57:42,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1694598718, now seen corresponding path program 1 times [2020-12-09 11:57:42,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:57:42,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642557017] [2020-12-09 11:57:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:57:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:57:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:57:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642557017] [2020-12-09 11:57:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:57:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:57:42,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558743847] [2020-12-09 11:57:42,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:57:42,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:57:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:57:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:57:42,625 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand 3 states. [2020-12-09 11:57:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:57:42,836 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2020-12-09 11:57:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:57:42,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 11:57:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:57:42,839 INFO L225 Difference]: With dead ends: 431 [2020-12-09 11:57:42,839 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 11:57:42,841 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 [2020-12-09 11:57:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 11:57:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 11:57:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 11:57:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 503 transitions. [2020-12-09 11:57:42,859 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 503 transitions. Word has length 76 [2020-12-09 11:57:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:57:42,859 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 503 transitions. [2020-12-09 11:57:42,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:57:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 503 transitions. [2020-12-09 11:57:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-09 11:57:42,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:57:42,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-12-09 11:57:42,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:57:42,863 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:57:42,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:57:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2124321652, now seen corresponding path program 1 times [2020-12-09 11:57:42,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:57:42,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395566772] [2020-12-09 11:57:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:57:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:57:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:57:42,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395566772] [2020-12-09 11:57:42,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:57:42,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:57:42,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569500445] [2020-12-09 11:57:42,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:57:42,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:57:42,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:57:42,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:57:42,938 INFO L87 Difference]: Start difference. First operand 287 states and 503 transitions. Second operand 3 states. [2020-12-09 11:57:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:57:43,128 INFO L93 Difference]: Finished difference Result 573 states and 1005 transitions. [2020-12-09 11:57:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:57:43,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-09 11:57:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:57:43,130 INFO L225 Difference]: With dead ends: 573 [2020-12-09 11:57:43,130 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 11:57:43,132 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 [2020-12-09 11:57:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 11:57:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 11:57:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 11:57:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 425 transitions. [2020-12-09 11:57:43,142 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 425 transitions. Word has length 93 [2020-12-09 11:57:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:57:43,143 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 425 transitions. [2020-12-09 11:57:43,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:57:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 425 transitions. [2020-12-09 11:57:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 11:57:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:57:43,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-09 11:57:43,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 11:57:43,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:57:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:57:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1729126378, now seen corresponding path program 1 times [2020-12-09 11:57:43,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:57:43,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706771674] [2020-12-09 11:57:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:57:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:57:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:57:43,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706771674] [2020-12-09 11:57:43,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:57:43,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:57:43,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462837185] [2020-12-09 11:57:43,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:57:43,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:57:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:57:43,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:57:43,212 INFO L87 Difference]: Start difference. First operand 287 states and 425 transitions. Second operand 4 states. [2020-12-09 11:57:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:57:43,516 INFO L93 Difference]: Finished difference Result 926 states and 1383 transitions. [2020-12-09 11:57:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:57:43,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-09 11:57:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:57:43,517 INFO L225 Difference]: With dead ends: 926 [2020-12-09 11:57:43,517 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:57:43,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:57:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:57:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:57:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:57:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:57:43,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2020-12-09 11:57:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:57:43,519 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:57:43,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:57:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:57:43,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:57:43,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 11:57:43,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:57:43,550 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 11:57:43,550 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 11:57:43,551 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 11:57:43,552 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 11:57:43,553 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 11:57:43,554 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1))) (or (and .cse0 (<= ~a16~0 5)) (<= ~a7~0 0) (and .cse0 (= ~a20~0 1)))) [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 11:57:43,555 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 11:57:43,556 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 11:57:43,557 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1))) (or (and .cse0 (<= ~a16~0 5)) (<= ~a7~0 0) (and .cse0 (= ~a20~0 1)))) [2020-12-09 11:57:43,557 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 516) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 11:57:43,558 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 11:57:43,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:57:43 BoogieIcfgContainer [2020-12-09 11:57:43,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:57:43,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:57:43,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:57:43,574 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:57:43,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:57:41" (3/4) ... [2020-12-09 11:57:43,577 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:57:43,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 11:57:43,598 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 11:57:43,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 11:57:43,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 11:57:43,703 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d01bae5-4543-4072-8179-4b95595bf0df/bin/utaipan/witness.graphml [2020-12-09 11:57:43,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:57:43,704 INFO L168 Benchmark]: Toolchain (without parser) took 3687.11 ms. Allocated memory was 90.2 MB in the beginning and 205.5 MB in the end (delta: 115.3 MB). Free memory was 52.9 MB in the beginning and 137.3 MB in the end (delta: -84.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,704 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 90.2 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:57:43,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.48 ms. Allocated memory is still 90.2 MB. Free memory was 52.7 MB in the beginning and 46.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.65 ms. Allocated memory is still 90.2 MB. Free memory was 46.5 MB in the beginning and 40.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,705 INFO L168 Benchmark]: Boogie Preprocessor took 55.00 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 40.9 MB in the beginning and 106.9 MB in the end (delta: -66.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,706 INFO L168 Benchmark]: RCFGBuilder took 1313.01 ms. Allocated memory was 132.1 MB in the beginning and 169.9 MB in the end (delta: 37.7 MB). Free memory was 106.9 MB in the beginning and 138.8 MB in the end (delta: -32.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,706 INFO L168 Benchmark]: TraceAbstraction took 1758.11 ms. Allocated memory was 169.9 MB in the beginning and 205.5 MB in the end (delta: 35.7 MB). Free memory was 137.8 MB in the beginning and 152.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,706 INFO L168 Benchmark]: Witness Printer took 129.38 ms. Allocated memory is still 205.5 MB. Free memory was 152.0 MB in the beginning and 137.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:57:43,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 90.2 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.48 ms. Allocated memory is still 90.2 MB. Free memory was 52.7 MB in the beginning and 46.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.65 ms. Allocated memory is still 90.2 MB. Free memory was 46.5 MB in the beginning and 40.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.00 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 40.9 MB in the beginning and 106.9 MB in the end (delta: -66.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1313.01 ms. Allocated memory was 132.1 MB in the beginning and 169.9 MB in the end (delta: 37.7 MB). Free memory was 106.9 MB in the beginning and 138.8 MB in the end (delta: -32.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1758.11 ms. Allocated memory was 169.9 MB in the beginning and 205.5 MB in the end (delta: 35.7 MB). Free memory was 137.8 MB in the beginning and 152.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 129.38 ms. Allocated memory is still 205.5 MB. Free memory was 152.0 MB in the beginning and 137.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a7 == 1 && a16 <= 5) || a7 <= 0) || (a7 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((a7 == 1 && a16 <= 5) || a7 <= 0) || (a7 == 1 && a20 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 312 SDslu, 19 SDs, 0 SdLazy, 1018 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 23 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 120 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 53321 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 62/62 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...