./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.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_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/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 0fa76a6c7489c66a6823a63202c7e3f27a163183 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:28:37,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:37,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:37,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:37,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:37,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:37,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:37,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:37,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:37,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:37,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:37,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:37,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:37,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:37,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:37,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:37,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:37,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:37,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:37,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:37,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:37,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:37,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:37,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:37,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:37,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:37,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:37,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:37,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:37,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:37,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:37,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:37,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:37,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:37,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:37,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:37,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:37,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:37,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:37,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:37,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:37,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:37,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:37,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:37,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:37,653 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:37,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:37,653 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:37,654 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:37,654 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:37,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:37,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:37,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:37,655 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:37,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:37,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:37,656 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:37,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:37,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:37,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:37,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:37,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:37,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:37,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:37,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:37,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:37,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:37,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:37,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:37,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:37,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:37,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:37,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:37,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:37,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:37,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:37,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:37,661 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:37,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:37,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:37,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:37,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:37,662 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_6880dec6-0185-4f0d-a372-b3da595aa207/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fa76a6c7489c66a6823a63202c7e3f27a163183 [2020-11-28 07:28:38,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:38,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:38,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:38,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:38,058 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:38,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2020-11-28 07:28:38,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/data/bdb04d83b/a998b9ffa29c443981a80e405be2a46c/FLAG54f418ba2 [2020-11-28 07:28:38,797 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:38,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2020-11-28 07:28:38,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/data/bdb04d83b/a998b9ffa29c443981a80e405be2a46c/FLAG54f418ba2 [2020-11-28 07:28:39,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/data/bdb04d83b/a998b9ffa29c443981a80e405be2a46c [2020-11-28 07:28:39,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:39,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:39,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:39,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:39,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:39,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e6b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39, skipping insertion in model container [2020-11-28 07:28:39,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:39,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:39,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:39,650 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:39,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:39,806 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39 WrapperNode [2020-11-28 07:28:39,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:39,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:39,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:39,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:39,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:39,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:39,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:39,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:39,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:39,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:40,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:40,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:40,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... [2020-11-28 07:28:40,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:40,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:40,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:40,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:40,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:43,280 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:43,280 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:28:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:43 BoogieIcfgContainer [2020-11-28 07:28:43,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:43,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:43,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:43,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:43,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:39" (1/3) ... [2020-11-28 07:28:43,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35572d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:43, skipping insertion in model container [2020-11-28 07:28:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:39" (2/3) ... [2020-11-28 07:28:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35572d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:43, skipping insertion in model container [2020-11-28 07:28:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:43" (3/3) ... [2020-11-28 07:28:43,301 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-11-28 07:28:43,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:43,347 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:43,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:43,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:43,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:43,398 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:43,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:43,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:43,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:43,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:43,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:28:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:28:43,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:43,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:43,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash -216538096, now seen corresponding path program 1 times [2020-11-28 07:28:43,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:43,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513285573] [2020-11-28 07:28:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:43,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513285573] [2020-11-28 07:28:43,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:43,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:43,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833880504] [2020-11-28 07:28:43,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:43,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:43,927 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:28:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:44,665 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:28:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:44,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:28:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:44,690 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:28:44,690 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:28:44,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:28:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:28:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:28:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-28 07:28:44,777 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-28 07:28:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:44,778 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-28 07:28:44,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-28 07:28:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:28:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:44,783 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 07:28:44,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:44,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -125426965, now seen corresponding path program 1 times [2020-11-28 07:28:44,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:44,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363859795] [2020-11-28 07:28:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:28:44,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363859795] [2020-11-28 07:28:44,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:44,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:44,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996592365] [2020-11-28 07:28:44,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:44,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:44,989 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-28 07:28:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:45,584 INFO L93 Difference]: Finished difference Result 325 states and 505 transitions. [2020-11-28 07:28:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:45,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:28:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:45,590 INFO L225 Difference]: With dead ends: 325 [2020-11-28 07:28:45,590 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:28:45,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:28:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-28 07:28:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 07:28:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 408 transitions. [2020-11-28 07:28:45,604 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 408 transitions. Word has length 85 [2020-11-28 07:28:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:45,605 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 408 transitions. [2020-11-28 07:28:45,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 408 transitions. [2020-11-28 07:28:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:28:45,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:45,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:45,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:28:45,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash -215850022, now seen corresponding path program 1 times [2020-11-28 07:28:45,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:45,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658930010] [2020-11-28 07:28:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:45,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658930010] [2020-11-28 07:28:45,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:45,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:45,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007820104] [2020-11-28 07:28:45,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:45,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:45,695 INFO L87 Difference]: Start difference. First operand 243 states and 408 transitions. Second operand 3 states. [2020-11-28 07:28:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:45,992 INFO L93 Difference]: Finished difference Result 485 states and 815 transitions. [2020-11-28 07:28:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:45,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:28:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:45,995 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:28:45,995 INFO L226 Difference]: Without dead ends: 243 [2020-11-28 07:28:45,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-28 07:28:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-28 07:28:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 07:28:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-28 07:28:46,013 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 91 [2020-11-28 07:28:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:46,013 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-28 07:28:46,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-28 07:28:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:28:46,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:46,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:46,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:28:46,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1373216520, now seen corresponding path program 1 times [2020-11-28 07:28:46,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:46,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548219167] [2020-11-28 07:28:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:46,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548219167] [2020-11-28 07:28:46,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:46,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:28:46,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750777821] [2020-11-28 07:28:46,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:46,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:46,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:46,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:46,094 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-28 07:28:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:46,583 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-28 07:28:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:46,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:28:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:46,586 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:28:46,586 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:28:46,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:28:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:28:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:28:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:28:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-28 07:28:46,604 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-28 07:28:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:46,605 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-28 07:28:46,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-28 07:28:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:28:46,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:46,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:46,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:28:46,609 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:46,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1281007570, now seen corresponding path program 1 times [2020-11-28 07:28:46,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:46,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012226444] [2020-11-28 07:28:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:46,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012226444] [2020-11-28 07:28:46,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857064096] [2020-11-28 07:28:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:47,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:28:47,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:28:47,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:28:47,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:28:47,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:28:47,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069812391] [2020-11-28 07:28:47,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:28:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:47,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:28:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:47,157 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-28 07:28:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:47,776 INFO L93 Difference]: Finished difference Result 803 states and 1204 transitions. [2020-11-28 07:28:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:28:47,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:28:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:47,778 INFO L225 Difference]: With dead ends: 803 [2020-11-28 07:28:47,778 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:47,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:47,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2020-11-28 07:28:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:47,780 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:47,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:28:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:47,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:48,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:48,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:28:48,123 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:28:48,124 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L578(line 578) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:28:48,125 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:28:48,126 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:28:48,127 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:28:48,128 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:28:48,129 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:28:48,130 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:28:48,130 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:28:48,130 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= 8 ~a17~0) .cse0) (and (<= ~a28~0 7) .cse0) (and (= ~a11~0 1) .cse0 (<= ~a28~0 10)))) [2020-11-28 07:28:48,130 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:28:48,130 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:48,131 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= 8 ~a17~0) .cse0) (and (<= ~a28~0 7) .cse0) (and (= ~a11~0 1) .cse0 (<= ~a28~0 10)))) [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:28:48,132 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:28:48,133 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:28:48,134 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:28:48,134 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:28:48,134 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:28:48,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:48 BoogieIcfgContainer [2020-11-28 07:28:48,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:48,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:48,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:48,167 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:48,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:43" (3/4) ... [2020-11-28 07:28:48,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:48,209 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:28:48,211 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:28:48,213 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:28:48,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:28:48,382 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6880dec6-0185-4f0d-a372-b3da595aa207/bin/utaipan/witness.graphml [2020-11-28 07:28:48,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:48,385 INFO L168 Benchmark]: Toolchain (without parser) took 9328.83 ms. Allocated memory was 81.8 MB in the beginning and 192.9 MB in the end (delta: 111.1 MB). Free memory was 47.1 MB in the beginning and 142.1 MB in the end (delta: -95.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,385 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:48,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.34 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 44.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.67 ms. Allocated memory is still 81.8 MB. Free memory was 44.0 MB in the beginning and 38.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,387 INFO L168 Benchmark]: Boogie Preprocessor took 118.94 ms. Allocated memory is still 81.8 MB. Free memory was 38.6 MB in the beginning and 34.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,387 INFO L168 Benchmark]: RCFGBuilder took 3211.47 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 34.1 MB in the beginning and 51.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,388 INFO L168 Benchmark]: TraceAbstraction took 4874.64 ms. Allocated memory was 130.0 MB in the beginning and 192.9 MB in the end (delta: 62.9 MB). Free memory was 50.0 MB in the beginning and 157.9 MB in the end (delta: -107.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,388 INFO L168 Benchmark]: Witness Printer took 215.83 ms. Allocated memory is still 192.9 MB. Free memory was 157.9 MB in the beginning and 142.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:48,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 757.34 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 44.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 141.67 ms. Allocated memory is still 81.8 MB. Free memory was 44.0 MB in the beginning and 38.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.94 ms. Allocated memory is still 81.8 MB. Free memory was 38.6 MB in the beginning and 34.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3211.47 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 34.1 MB in the beginning and 51.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4874.64 ms. Allocated memory was 130.0 MB in the beginning and 192.9 MB in the end (delta: 62.9 MB). Free memory was 50.0 MB in the beginning and 157.9 MB in the end (delta: -107.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. * Witness Printer took 215.83 ms. Allocated memory is still 192.9 MB. Free memory was 157.9 MB in the beginning and 142.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((8 <= a17 && a17 <= 8) || (a28 <= 7 && a17 <= 8)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((8 <= a17 && a17 <= 8) || (a28 <= 7 && a17 <= 8)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 268 SDslu, 16 SDs, 0 SdLazy, 1020 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 17 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 573 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 673 ConstructedInterpolants, 0 QuantifiedInterpolants, 305009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 126/142 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...