./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.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_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/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 4f5e94ed071347129094298d5dbb28caecb84213 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:01,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:01,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:01,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:01,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:01,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:01,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:01,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:01,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:01,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:01,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:01,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:01,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:01,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:01,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:01,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:01,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:01,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:01,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:01,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:01,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:01,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:01,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:01,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:01,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:01,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:01,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:01,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:01,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:01,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:01,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:01,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:01,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:01,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:01,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:01,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:01,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:01,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:01,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:01,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:01,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:01,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:01,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:01,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:01,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:01,412 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:01,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:01,413 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:01,413 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:01,413 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:01,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:01,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:01,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:01,414 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:01,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:01,427 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:01,427 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:01,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:01,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:01,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:01,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:01,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:01,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:01,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:01,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:01,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:01,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:01,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:01,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:01,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:01,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:01,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:01,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:01,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:01,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:01,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:01,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:01,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:01,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:01,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:01,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:01,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:01,432 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_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5e94ed071347129094298d5dbb28caecb84213 [2020-11-22 12:57:01,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:01,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:01,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:01,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:01,736 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:01,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2020-11-22 12:57:01,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/data/d8c726aac/4747f2bbc4ba4c14bcfc7ff194f01cc9/FLAG7a5b112bf [2020-11-22 12:57:02,379 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:02,380 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2020-11-22 12:57:02,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/data/d8c726aac/4747f2bbc4ba4c14bcfc7ff194f01cc9/FLAG7a5b112bf [2020-11-22 12:57:02,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/data/d8c726aac/4747f2bbc4ba4c14bcfc7ff194f01cc9 [2020-11-22 12:57:02,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:02,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:02,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:02,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:02,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:02,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739ed27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:02, skipping insertion in model container [2020-11-22 12:57:02,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:02" (1/1) ... [2020-11-22 12:57:02,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:02,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:03,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:03,292 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:03,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:03,425 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:03,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03 WrapperNode [2020-11-22 12:57:03,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:03,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:03,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:03,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:03,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:03,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:03,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:03,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:03,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... [2020-11-22 12:57:03,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:03,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:03,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:03,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:03,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/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 [2020-11-22 12:57:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:06,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:06,049 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:57:06,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06 BoogieIcfgContainer [2020-11-22 12:57:06,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:06,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:06,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:06,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:06,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:02" (1/3) ... [2020-11-22 12:57:06,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ac00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:06, skipping insertion in model container [2020-11-22 12:57:06,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:03" (2/3) ... [2020-11-22 12:57:06,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ac00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:06, skipping insertion in model container [2020-11-22 12:57:06,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06" (3/3) ... [2020-11-22 12:57:06,060 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-11-22 12:57:06,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:06,075 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:06,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:06,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:06,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:06,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:06,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:06,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:06,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:06,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:06,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 12:57:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 12:57:06,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:06,133 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] [2020-11-22 12:57:06,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash -216544240, now seen corresponding path program 1 times [2020-11-22 12:57:06,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:06,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347011695] [2020-11-22 12:57:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:06,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347011695] [2020-11-22 12:57:06,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:06,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:06,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371935837] [2020-11-22 12:57:06,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:06,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:06,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:06,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:06,531 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 12:57:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,186 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 12:57:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:07,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 12:57:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,200 INFO L225 Difference]: With dead ends: 251 [2020-11-22 12:57:07,200 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:57:07,203 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 [2020-11-22 12:57:07,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:57:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:57:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:57:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-22 12:57:07,269 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-22 12:57:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,273 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-22 12:57:07,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-22 12:57:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 12:57:07,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,280 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] [2020-11-22 12:57:07,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:07,281 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash -215856166, now seen corresponding path program 1 times [2020-11-22 12:57:07,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076534194] [2020-11-22 12:57:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:07,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076534194] [2020-11-22 12:57:07,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:07,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:07,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847974843] [2020-11-22 12:57:07,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:07,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:07,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:07,411 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-22 12:57:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:07,674 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-22 12:57:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:07,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 12:57:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:07,678 INFO L225 Difference]: With dead ends: 325 [2020-11-22 12:57:07,678 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:57:07,679 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 [2020-11-22 12:57:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:57:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:57:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:57:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-22 12:57:07,707 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-22 12:57:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:07,708 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-22 12:57:07,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-22 12:57:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 12:57:07,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:07,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:07,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:07,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1467820269, now seen corresponding path program 1 times [2020-11-22 12:57:07,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:07,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009659632] [2020-11-22 12:57:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009659632] [2020-11-22 12:57:07,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:07,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:07,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690656027] [2020-11-22 12:57:07,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:07,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:07,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:07,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:07,843 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-22 12:57:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,266 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-22 12:57:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-22 12:57:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,271 INFO L225 Difference]: With dead ends: 485 [2020-11-22 12:57:08,271 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 12:57:08,272 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 [2020-11-22 12:57:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 12:57:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-22 12:57:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-22 12:57:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-22 12:57:08,308 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-22 12:57:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,309 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-22 12:57:08,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-22 12:57:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-22 12:57:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,322 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] [2020-11-22 12:57:08,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:08,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1373210376, now seen corresponding path program 1 times [2020-11-22 12:57:08,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185469724] [2020-11-22 12:57:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:08,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185469724] [2020-11-22 12:57:08,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:08,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:08,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229649407] [2020-11-22 12:57:08,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:08,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:08,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:08,406 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-22 12:57:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:08,815 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-22 12:57:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:08,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-22 12:57:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:08,820 INFO L225 Difference]: With dead ends: 565 [2020-11-22 12:57:08,820 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 12:57:08,822 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 [2020-11-22 12:57:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 12:57:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 12:57:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 12:57:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-22 12:57:08,850 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-22 12:57:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:08,851 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-22 12:57:08,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-22 12:57:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-22 12:57:08,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:08,860 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] [2020-11-22 12:57:08,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:08,861 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1281001426, now seen corresponding path program 1 times [2020-11-22 12:57:08,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:08,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871217727] [2020-11-22 12:57:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:09,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871217727] [2020-11-22 12:57:09,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467955649] [2020-11-22 12:57:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/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 [2020-11-22 12:57:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:09,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:57:09,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:57:09,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:09,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:57:09,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198495457] [2020-11-22 12:57:09,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:09,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:09,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:09,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:09,514 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-22 12:57:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:09,861 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-22 12:57:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:09,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-22 12:57:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:09,867 INFO L225 Difference]: With dead ends: 885 [2020-11-22 12:57:09,867 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 12:57:09,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 12:57:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-22 12:57:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 12:57:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2020-11-22 12:57:09,904 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2020-11-22 12:57:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:09,904 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2020-11-22 12:57:09,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2020-11-22 12:57:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:57:09,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:09,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:10,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:10,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash 441524252, now seen corresponding path program 1 times [2020-11-22 12:57:10,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950068996] [2020-11-22 12:57:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:57:10,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950068996] [2020-11-22 12:57:10,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:10,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939725259] [2020-11-22 12:57:10,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,217 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2020-11-22 12:57:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:10,649 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2020-11-22 12:57:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:10,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:57:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:10,655 INFO L225 Difference]: With dead ends: 1285 [2020-11-22 12:57:10,655 INFO L226 Difference]: Without dead ends: 803 [2020-11-22 12:57:10,656 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 [2020-11-22 12:57:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-22 12:57:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-22 12:57:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-22 12:57:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-11-22 12:57:10,695 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2020-11-22 12:57:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:10,697 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-11-22 12:57:10,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-11-22 12:57:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 12:57:10,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:10,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:10,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:57:10,700 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1989625277, now seen corresponding path program 1 times [2020-11-22 12:57:10,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:10,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394141186] [2020-11-22 12:57:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:57:10,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394141186] [2020-11-22 12:57:10,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:10,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:10,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489188799] [2020-11-22 12:57:10,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:10,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:10,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:10,792 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-11-22 12:57:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,158 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-11-22 12:57:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-22 12:57:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,165 INFO L225 Difference]: With dead ends: 1845 [2020-11-22 12:57:11,165 INFO L226 Difference]: Without dead ends: 963 [2020-11-22 12:57:11,167 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 [2020-11-22 12:57:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-22 12:57:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-11-22 12:57:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-22 12:57:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-11-22 12:57:11,222 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-11-22 12:57:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,223 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-11-22 12:57:11,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-11-22 12:57:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-22 12:57:11,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:11,226 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:11,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:57:11,227 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1963544521, now seen corresponding path program 1 times [2020-11-22 12:57:11,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:11,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169244678] [2020-11-22 12:57:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-22 12:57:11,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169244678] [2020-11-22 12:57:11,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787922516] [2020-11-22 12:57:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:11,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:57:11,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 12:57:11,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 12:57:11,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:57:11,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 12:57:11,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726322249] [2020-11-22 12:57:11,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:11,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:11,601 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2020-11-22 12:57:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:11,947 INFO L93 Difference]: Finished difference Result 2003 states and 2379 transitions. [2020-11-22 12:57:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:11,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-11-22 12:57:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:11,949 INFO L225 Difference]: With dead ends: 2003 [2020-11-22 12:57:11,949 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:11,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:11,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-11-22 12:57:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:11,952 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:11,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:11,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:12,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:57:12,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:12,356 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-11-22 12:57:12,357 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 12:57:12,358 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 12:57:12,359 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 12:57:12,360 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) (<= 8 ~a17~0) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1))) [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 12:57:12,361 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) (<= 8 ~a17~0) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1))) [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 12:57:12,362 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 12:57:12,369 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 12:57:12,370 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 12:57:12,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:12 BoogieIcfgContainer [2020-11-22 12:57:12,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:12,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:12,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:12,398 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:12,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:06" (3/4) ... [2020-11-22 12:57:12,401 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:12,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 12:57:12,428 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:57:12,430 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:57:12,431 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:57:12,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f38f3c6-9a63-47a9-96aa-794f6f73eff0/bin/utaipan/witness.graphml [2020-11-22 12:57:12,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:12,568 INFO L168 Benchmark]: Toolchain (without parser) took 9724.02 ms. Allocated memory was 117.4 MB in the beginning and 237.0 MB in the end (delta: 119.5 MB). Free memory was 82.8 MB in the beginning and 83.2 MB in the end (delta: -439.4 kB). Peak memory consumption was 119.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,569 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 73.4 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:12,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.01 ms. Allocated memory is still 117.4 MB. Free memory was 82.6 MB in the beginning and 77.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.02 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 71.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,570 INFO L168 Benchmark]: Boogie Preprocessor took 54.45 ms. Allocated memory is still 117.4 MB. Free memory was 71.8 MB in the beginning and 67.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,570 INFO L168 Benchmark]: RCFGBuilder took 2487.87 ms. Allocated memory was 117.4 MB in the beginning and 155.2 MB in the end (delta: 37.7 MB). Free memory was 67.6 MB in the beginning and 102.6 MB in the end (delta: -35.0 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,571 INFO L168 Benchmark]: TraceAbstraction took 6343.24 ms. Allocated memory was 155.2 MB in the beginning and 237.0 MB in the end (delta: 81.8 MB). Free memory was 102.6 MB in the beginning and 99.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,571 INFO L168 Benchmark]: Witness Printer took 169.79 ms. Allocated memory is still 237.0 MB. Free memory was 99.0 MB in the beginning and 83.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:12,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 73.4 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.01 ms. Allocated memory is still 117.4 MB. Free memory was 82.6 MB in the beginning and 77.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.02 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 71.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.45 ms. Allocated memory is still 117.4 MB. Free memory was 71.8 MB in the beginning and 67.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2487.87 ms. Allocated memory was 117.4 MB in the beginning and 155.2 MB in the end (delta: 37.7 MB). Free memory was 67.6 MB in the beginning and 102.6 MB in the end (delta: -35.0 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6343.24 ms. Allocated memory was 155.2 MB in the beginning and 237.0 MB in the end (delta: 81.8 MB). Free memory was 102.6 MB in the beginning and 99.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 16.1 GB. * Witness Printer took 169.79 ms. Allocated memory is still 237.0 MB. Free memory was 99.0 MB in the beginning and 83.2 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: ((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && 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: 6.0s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 379 SDtfs, 496 SDslu, 38 SDs, 0 SdLazy, 1644 SolverSat, 449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 524 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 77 HoareAnnotationTreeSize, 3 FomulaSimplifications, 448 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 166 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1138 NumberOfCodeBlocks, 1138 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1387 ConstructedInterpolants, 0 QuantifiedInterpolants, 528047 SizeOfPredicates, 2 NumberOfNonLiveVariables, 647 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 704/728 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...