./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label21.c -s /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/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 e28adbc418ee4960546fd54a6ea808ccba29f67f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 04:37:15,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:37:15,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:37:15,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:37:15,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:37:15,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:37:15,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:37:15,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:37:15,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:37:15,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:37:15,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:37:15,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:37:15,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:37:15,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:37:15,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:37:15,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:37:15,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:37:15,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:37:15,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:37:15,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:37:15,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:37:15,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:37:15,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:37:15,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:37:15,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:37:15,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:37:15,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:37:15,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:37:15,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:37:15,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:37:15,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:37:15,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:37:15,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:37:15,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:37:15,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:37:15,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:37:15,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:37:15,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:37:15,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:37:15,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:37:15,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:37:15,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:37:15,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:37:15,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:37:15,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:37:15,292 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:37:15,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:37:15,292 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:37:15,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:37:15,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:37:15,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:37:15,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:37:15,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:37:15,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:37:15,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:37:15,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:37:15,296 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_791eec99-6d3e-487d-b142-4e0d493706c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e28adbc418ee4960546fd54a6ea808ccba29f67f [2020-12-09 04:37:15,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:37:15,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:37:15,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:37:15,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:37:15,500 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:37:15,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label21.c [2020-12-09 04:37:15,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/data/8f1f19ebf/8f960ef3bc1043be98727cfbbb102221/FLAGe50644399 [2020-12-09 04:37:15,975 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:37:15,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/sv-benchmarks/c/eca-rers2012/Problem02_label21.c [2020-12-09 04:37:15,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/data/8f1f19ebf/8f960ef3bc1043be98727cfbbb102221/FLAGe50644399 [2020-12-09 04:37:15,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/data/8f1f19ebf/8f960ef3bc1043be98727cfbbb102221 [2020-12-09 04:37:16,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:37:16,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:37:16,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:37:16,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:37:16,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:37:16,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18438608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16, skipping insertion in model container [2020-12-09 04:37:16,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:37:16,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:37:16,244 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/sv-benchmarks/c/eca-rers2012/Problem02_label21.c[16331,16344] [2020-12-09 04:37:16,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:37:16,277 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:37:16,329 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/sv-benchmarks/c/eca-rers2012/Problem02_label21.c[16331,16344] [2020-12-09 04:37:16,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:37:16,352 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:37:16,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16 WrapperNode [2020-12-09 04:37:16,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:37:16,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:37:16,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:37:16,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:37:16,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:37:16,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:37:16,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:37:16,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:37:16,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... [2020-12-09 04:37:16,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:37:16,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:37:16,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:37:16,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:37:16,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:37:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:37:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:37:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:37:16,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:37:17,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:37:17,857 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 04:37:17,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:17 BoogieIcfgContainer [2020-12-09 04:37:17,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:37:17,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:37:17,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:37:17,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:37:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:37:16" (1/3) ... [2020-12-09 04:37:17,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf73804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:37:17, skipping insertion in model container [2020-12-09 04:37:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:16" (2/3) ... [2020-12-09 04:37:17,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf73804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:37:17, skipping insertion in model container [2020-12-09 04:37:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:17" (3/3) ... [2020-12-09 04:37:17,866 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-12-09 04:37:17,876 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:37:17,879 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:37:17,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:37:17,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:37:17,907 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:37:17,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:37:17,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:37:17,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:37:17,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:37:17,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:37:17,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:37:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 04:37:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 04:37:17,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:17,927 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] [2020-12-09 04:37:17,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:17,933 INFO L82 PathProgramCache]: Analyzing trace with hash 925943622, now seen corresponding path program 1 times [2020-12-09 04:37:17,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:17,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9869901] [2020-12-09 04:37:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:18,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9869901] [2020-12-09 04:37:18,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:18,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:18,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832839488] [2020-12-09 04:37:18,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:18,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:18,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:18,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:18,184 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 04:37:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:18,550 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 04:37:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:18,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 04:37:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:18,560 INFO L225 Difference]: With dead ends: 251 [2020-12-09 04:37:18,560 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 04:37:18,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 04:37:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 04:37:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 04:37:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-12-09 04:37:18,599 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-12-09 04:37:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:18,599 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-12-09 04:37:18,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-12-09 04:37:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 04:37:18,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:18,603 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] [2020-12-09 04:37:18,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:37:18,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:18,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1427753586, now seen corresponding path program 1 times [2020-12-09 04:37:18,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:18,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605613109] [2020-12-09 04:37:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:18,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605613109] [2020-12-09 04:37:18,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:18,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:18,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133663582] [2020-12-09 04:37:18,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:18,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:18,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:18,656 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-12-09 04:37:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:18,825 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-12-09 04:37:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:18,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 04:37:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:18,828 INFO L225 Difference]: With dead ends: 325 [2020-12-09 04:37:18,828 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 04:37:18,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 04:37:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 04:37:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 04:37:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-12-09 04:37:18,845 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-12-09 04:37:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:18,845 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-12-09 04:37:18,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-12-09 04:37:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 04:37:18,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:18,848 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] [2020-12-09 04:37:18,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:37:18,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash 221744101, now seen corresponding path program 1 times [2020-12-09 04:37:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:18,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721182527] [2020-12-09 04:37:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721182527] [2020-12-09 04:37:18,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:18,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:18,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561995672] [2020-12-09 04:37:18,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:18,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:18,920 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-12-09 04:37:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:19,158 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-12-09 04:37:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:19,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 04:37:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:19,160 INFO L225 Difference]: With dead ends: 485 [2020-12-09 04:37:19,160 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 04:37:19,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 04:37:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 04:37:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 04:37:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 04:37:19,173 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-12-09 04:37:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:19,173 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 04:37:19,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 04:37:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 04:37:19,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:19,175 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] [2020-12-09 04:37:19,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:37:19,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2134439042, now seen corresponding path program 1 times [2020-12-09 04:37:19,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:19,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702773332] [2020-12-09 04:37:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:19,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702773332] [2020-12-09 04:37:19,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:19,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:19,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501440362] [2020-12-09 04:37:19,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:19,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:19,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:19,237 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 04:37:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:19,514 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 04:37:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:19,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 04:37:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:19,516 INFO L225 Difference]: With dead ends: 565 [2020-12-09 04:37:19,517 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 04:37:19,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 04:37:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 04:37:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 04:37:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 04:37:19,528 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 04:37:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:19,528 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 04:37:19,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 04:37:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 04:37:19,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:19,531 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] [2020-12-09 04:37:19,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:37:19,531 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2118181560, now seen corresponding path program 1 times [2020-12-09 04:37:19,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:19,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109864990] [2020-12-09 04:37:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:19,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109864990] [2020-12-09 04:37:19,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501387365] [2020-12-09 04:37:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/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 [2020-12-09 04:37:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:19,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 04:37:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 04:37:19,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 04:37:19,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:19,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 04:37:19,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619747216] [2020-12-09 04:37:19,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:19,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:37:19,927 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 04:37:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:20,155 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-12-09 04:37:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:20,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 04:37:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:20,158 INFO L225 Difference]: With dead ends: 885 [2020-12-09 04:37:20,159 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 04:37:20,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:37:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 04:37:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-12-09 04:37:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 04:37:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2020-12-09 04:37:20,170 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2020-12-09 04:37:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:20,170 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2020-12-09 04:37:20,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2020-12-09 04:37:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 04:37:20,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:20,172 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] [2020-12-09 04:37:20,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:37:20,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:20,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash -440310638, now seen corresponding path program 1 times [2020-12-09 04:37:20,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:20,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977563197] [2020-12-09 04:37:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 04:37:20,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977563197] [2020-12-09 04:37:20,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:20,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:20,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908100643] [2020-12-09 04:37:20,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:20,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:20,424 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2020-12-09 04:37:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:20,670 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2020-12-09 04:37:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:20,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 04:37:20,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:20,676 INFO L225 Difference]: With dead ends: 1285 [2020-12-09 04:37:20,676 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 04:37:20,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 04:37:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 04:37:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 04:37:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-12-09 04:37:20,699 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2020-12-09 04:37:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:20,699 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-12-09 04:37:20,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-12-09 04:37:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 04:37:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:20,702 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] [2020-12-09 04:37:20,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 04:37:20,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1534360197, now seen corresponding path program 1 times [2020-12-09 04:37:20,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:20,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494075822] [2020-12-09 04:37:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 04:37:20,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494075822] [2020-12-09 04:37:20,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:20,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:20,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648557848] [2020-12-09 04:37:20,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:20,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:20,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:20,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:20,766 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-12-09 04:37:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:21,028 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-12-09 04:37:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:21,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 04:37:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:21,033 INFO L225 Difference]: With dead ends: 1845 [2020-12-09 04:37:21,033 INFO L226 Difference]: Without dead ends: 963 [2020-12-09 04:37:21,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-09 04:37:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-12-09 04:37:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 04:37:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-12-09 04:37:21,064 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-12-09 04:37:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:21,065 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-12-09 04:37:21,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-12-09 04:37:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 04:37:21,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:21,067 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] [2020-12-09 04:37:21,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 04:37:21,067 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1274103748, now seen corresponding path program 1 times [2020-12-09 04:37:21,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:21,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902183918] [2020-12-09 04:37:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 04:37:21,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902183918] [2020-12-09 04:37:21,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:21,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:21,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104660819] [2020-12-09 04:37:21,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:21,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:21,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:21,127 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2020-12-09 04:37:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:21,333 INFO L93 Difference]: Finished difference Result 1765 states and 2062 transitions. [2020-12-09 04:37:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:21,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-09 04:37:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:21,337 INFO L225 Difference]: With dead ends: 1765 [2020-12-09 04:37:21,337 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 04:37:21,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 04:37:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 04:37:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 04:37:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 887 transitions. [2020-12-09 04:37:21,351 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 887 transitions. Word has length 154 [2020-12-09 04:37:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:21,351 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 887 transitions. [2020-12-09 04:37:21,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 887 transitions. [2020-12-09 04:37:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-09 04:37:21,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:21,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 04:37:21,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 04:37:21,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1296467717, now seen corresponding path program 1 times [2020-12-09 04:37:21,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:21,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985149424] [2020-12-09 04:37:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:21,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985149424] [2020-12-09 04:37:21,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761357147] [2020-12-09 04:37:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/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 [2020-12-09 04:37:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:21,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 04:37:21,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 04:37:21,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 04:37:21,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:21,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 04:37:21,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755721400] [2020-12-09 04:37:21,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:21,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:21,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:21,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:37:21,817 INFO L87 Difference]: Start difference. First operand 803 states and 887 transitions. Second operand 3 states. [2020-12-09 04:37:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:22,017 INFO L93 Difference]: Finished difference Result 1845 states and 2063 transitions. [2020-12-09 04:37:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:22,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-12-09 04:37:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:22,023 INFO L225 Difference]: With dead ends: 1845 [2020-12-09 04:37:22,023 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 04:37:22,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:37:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 04:37:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1043. [2020-12-09 04:37:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 04:37:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2020-12-09 04:37:22,052 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 178 [2020-12-09 04:37:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:22,053 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2020-12-09 04:37:22,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2020-12-09 04:37:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-09 04:37:22,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:22,057 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 04:37:22,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:37:22,258 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1071023686, now seen corresponding path program 1 times [2020-12-09 04:37:22,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:22,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626575979] [2020-12-09 04:37:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 04:37:22,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626575979] [2020-12-09 04:37:22,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:22,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:22,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367887534] [2020-12-09 04:37:22,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:22,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:22,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:22,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:22,337 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 transitions. Second operand 3 states. [2020-12-09 04:37:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:22,578 INFO L93 Difference]: Finished difference Result 2243 states and 2475 transitions. [2020-12-09 04:37:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:22,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-09 04:37:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:22,578 INFO L225 Difference]: With dead ends: 2243 [2020-12-09 04:37:22,579 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:37:22,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:37:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:37:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:37:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:37:22,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-12-09 04:37:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:22,581 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:37:22,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:37:22,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:37:22,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 04:37:22,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 04:37:22,758 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 04:37:22,759 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 470) no Hoare annotation was computed. [2020-12-09 04:37:22,760 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 04:37:22,761 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse5 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse4 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and .cse2 (<= ~a28~0 7) .cse0) (and .cse2 (= ~a11~0 1) .cse0 .cse1) (and .cse3 .cse4 .cse2 .cse0 .cse1) (and .cse5 .cse4 .cse2 .cse0) (and .cse5 .cse3 .cse4 .cse0 .cse1))) [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 04:37:22,762 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse5 (= ~a19~0 1)) (.cse3 (<= 10 ~a28~0)) (.cse4 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and .cse2 (<= ~a28~0 7) .cse0) (and .cse2 (= ~a11~0 1) .cse0 .cse1) (and .cse3 .cse4 .cse2 .cse0 .cse1) (and .cse5 .cse4 .cse2 .cse0) (and .cse5 .cse3 .cse4 .cse0 .cse1))) [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 04:37:22,763 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 04:37:22,764 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 04:37:22,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:37:22 BoogieIcfgContainer [2020-12-09 04:37:22,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:37:22,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:37:22,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:37:22,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:37:22,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:17" (3/4) ... [2020-12-09 04:37:22,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:37:22,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 04:37:22,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 04:37:22,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 04:37:22,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 04:37:22,888 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_791eec99-6d3e-487d-b142-4e0d493706c1/bin/utaipan/witness.graphml [2020-12-09 04:37:22,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:37:22,889 INFO L168 Benchmark]: Toolchain (without parser) took 6885.20 ms. Allocated memory was 96.5 MB in the beginning and 270.5 MB in the end (delta: 174.1 MB). Free memory was 55.5 MB in the beginning and 126.9 MB in the end (delta: -71.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,889 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:37:22,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.64 ms. Allocated memory is still 96.5 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.04 ms. Allocated memory is still 96.5 MB. Free memory was 53.3 MB in the beginning and 47.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,890 INFO L168 Benchmark]: Boogie Preprocessor took 63.36 ms. Allocated memory is still 96.5 MB. Free memory was 47.8 MB in the beginning and 70.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,890 INFO L168 Benchmark]: RCFGBuilder took 1378.56 ms. Allocated memory was 96.5 MB in the beginning and 155.2 MB in the end (delta: 58.7 MB). Free memory was 70.4 MB in the beginning and 114.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,891 INFO L168 Benchmark]: TraceAbstraction took 4918.02 ms. Allocated memory was 155.2 MB in the beginning and 270.5 MB in the end (delta: 115.3 MB). Free memory was 113.3 MB in the beginning and 142.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 87.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,891 INFO L168 Benchmark]: Witness Printer took 108.73 ms. Allocated memory is still 270.5 MB. Free memory was 142.7 MB in the beginning and 126.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:22,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.64 ms. Allocated memory is still 96.5 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.04 ms. Allocated memory is still 96.5 MB. Free memory was 53.3 MB in the beginning and 47.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.36 ms. Allocated memory is still 96.5 MB. Free memory was 47.8 MB in the beginning and 70.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1378.56 ms. Allocated memory was 96.5 MB in the beginning and 155.2 MB in the end (delta: 58.7 MB). Free memory was 70.4 MB in the beginning and 114.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4918.02 ms. Allocated memory was 155.2 MB in the beginning and 270.5 MB in the end (delta: 115.3 MB). Free memory was 113.3 MB in the beginning and 142.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 87.1 MB. Max. memory is 16.1 GB. * Witness Printer took 108.73 ms. Allocated memory is still 270.5 MB. Free memory was 142.7 MB in the beginning and 126.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 470]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a17 <= 8 && a25 <= 0) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((10 <= a28 && 8 <= a17) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a17 <= 8 && a25 <= 0) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((10 <= a28 && 8 <= a17) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && 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: 10, TraceHistogramMax: 6, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 620 SDtfs, 599 SDslu, 54 SDs, 0 SdLazy, 1995 SolverSat, 500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 576 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=9, 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, 10 MinimizatonAttempts, 240 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 159 HoareAnnotationTreeSize, 3 FomulaSimplifications, 632 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 160 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1536 NumberOfCodeBlocks, 1536 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1807 ConstructedInterpolants, 0 QuantifiedInterpolants, 894305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 984/1058 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...