./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c -s /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/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 515c445dffdf047de080b804ef978087ccc975eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:03:38,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:03:38,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:03:38,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:03:38,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:03:38,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:03:38,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:03:38,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:03:38,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:03:38,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:03:38,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:03:38,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:03:38,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:03:38,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:03:38,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:03:38,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:03:38,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:03:38,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:03:38,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:03:38,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:03:38,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:03:38,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:03:38,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:03:38,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:03:38,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:03:38,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:03:38,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:03:38,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:03:38,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:03:38,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:03:38,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:03:38,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:03:38,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:03:38,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:03:38,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:03:38,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:03:38,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:03:38,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:03:38,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:03:38,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:03:38,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:03:38,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:03:38,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:03:38,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:03:38,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:03:38,323 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:03:38,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:03:38,324 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:03:38,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:03:38,324 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:03:38,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:03:38,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:03:38,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:03:38,326 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:03:38,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:03:38,327 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:03:38,327 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:03:38,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:03:38,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:03:38,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:03:38,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:03:38,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:03:38,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:03:38,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:03:38,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:03:38,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:03:38,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:03:38,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:03:38,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:03:38,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:03:38,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:03:38,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:03:38,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:03:38,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:38,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:03:38,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:03:38,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:03:38,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:03:38,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:03:38,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:03:38,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:03:38,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:03:38,334 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_58b6e0d0-3dd5-4849-996c-c911d3246511/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 515c445dffdf047de080b804ef978087ccc975eb [2020-11-30 02:03:38,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:03:38,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:03:38,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:03:38,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:03:38,654 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:03:38,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2020-11-30 02:03:38,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/data/cb645b995/2c26a78375884aa19deba770c88d4a2b/FLAG1cd9e7aaa [2020-11-30 02:03:39,336 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:03:39,337 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2020-11-30 02:03:39,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/data/cb645b995/2c26a78375884aa19deba770c88d4a2b/FLAG1cd9e7aaa [2020-11-30 02:03:39,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/data/cb645b995/2c26a78375884aa19deba770c88d4a2b [2020-11-30 02:03:39,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:03:39,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:03:39,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:39,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:03:39,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:03:39,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:39" (1/1) ... [2020-11-30 02:03:39,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b1fe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:39, skipping insertion in model container [2020-11-30 02:03:39,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:39" (1/1) ... [2020-11-30 02:03:39,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:03:39,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:40,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:40,124 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:03:40,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:40,274 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:03:40,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40 WrapperNode [2020-11-30 02:03:40,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:40,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:40,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:03:40,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:03:40,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:40,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:03:40,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:03:40,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:03:40,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... [2020-11-30 02:03:40,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:03:40,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:03:40,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:03:40,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:03:40,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:03:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:03:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:03:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:03:43,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:03:43,129 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:03:43,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:43 BoogieIcfgContainer [2020-11-30 02:03:43,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:03:43,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:03:43,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:03:43,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:03:43,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:03:39" (1/3) ... [2020-11-30 02:03:43,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb89ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:43, skipping insertion in model container [2020-11-30 02:03:43,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:40" (2/3) ... [2020-11-30 02:03:43,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb89ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:43, skipping insertion in model container [2020-11-30 02:03:43,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:43" (3/3) ... [2020-11-30 02:03:43,142 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label23.c [2020-11-30 02:03:43,156 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:03:43,161 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:03:43,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:03:43,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:03:43,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:03:43,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:03:43,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:03:43,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:03:43,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:03:43,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:03:43,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:03:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-30 02:03:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 02:03:43,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:43,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:43,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash -216537840, now seen corresponding path program 1 times [2020-11-30 02:03:43,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:43,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444352224] [2020-11-30 02:03:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:43,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444352224] [2020-11-30 02:03:43,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:43,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:03:43,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943319818] [2020-11-30 02:03:43,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:43,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:43,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:43,706 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-30 02:03:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:44,371 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-30 02:03:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:44,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 02:03:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:44,396 INFO L225 Difference]: With dead ends: 251 [2020-11-30 02:03:44,396 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:03:44,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:03:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:03:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:03:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-30 02:03:44,490 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-30 02:03:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:44,491 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-30 02:03:44,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-30 02:03:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:03:44,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:44,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:44,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:03:44,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash -215849766, now seen corresponding path program 1 times [2020-11-30 02:03:44,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:44,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5740622] [2020-11-30 02:03:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:44,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5740622] [2020-11-30 02:03:44,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:44,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:03:44,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768143326] [2020-11-30 02:03:44,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:44,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:44,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:44,613 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-30 02:03:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:44,964 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-30 02:03:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:44,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 02:03:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:44,967 INFO L225 Difference]: With dead ends: 325 [2020-11-30 02:03:44,967 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:03:44,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:03:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:03:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:03:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-30 02:03:44,993 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-30 02:03:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:44,993 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-30 02:03:44,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-30 02:03:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 02:03:44,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:44,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:44,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:03:44,998 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:44,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1467826669, now seen corresponding path program 1 times [2020-11-30 02:03:44,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:44,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480578294] [2020-11-30 02:03:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:45,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480578294] [2020-11-30 02:03:45,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:45,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:03:45,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655571416] [2020-11-30 02:03:45,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:45,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:45,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:45,144 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-30 02:03:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:45,651 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-30 02:03:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:45,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 02:03:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:45,655 INFO L225 Difference]: With dead ends: 485 [2020-11-30 02:03:45,655 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:03:45,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:03:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-30 02:03:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-30 02:03:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-30 02:03:45,671 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-30 02:03:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:45,671 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-30 02:03:45,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-30 02:03:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-30 02:03:45,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:45,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:45,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:03:45,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:45,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1373216776, now seen corresponding path program 1 times [2020-11-30 02:03:45,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:45,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986423610] [2020-11-30 02:03:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986423610] [2020-11-30 02:03:45,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:45,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:03:45,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155952786] [2020-11-30 02:03:45,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:45,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:45,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:45,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:45,767 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-30 02:03:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:46,259 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-30 02:03:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:46,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-30 02:03:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:46,262 INFO L225 Difference]: With dead ends: 565 [2020-11-30 02:03:46,262 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:03:46,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:03:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-30 02:03:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-30 02:03:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-30 02:03:46,300 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-30 02:03:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:46,302 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-30 02:03:46,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-30 02:03:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-30 02:03:46,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:46,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:46,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:03:46,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1281007826, now seen corresponding path program 1 times [2020-11-30 02:03:46,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:46,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303860747] [2020-11-30 02:03:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:46,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303860747] [2020-11-30 02:03:46,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327787533] [2020-11-30 02:03:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:03:46,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:03:46,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:03:46,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:03:46,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:03:46,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902867079] [2020-11-30 02:03:46,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:46,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:46,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:46,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:46,977 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-30 02:03:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:47,470 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-30 02:03:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:47,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-30 02:03:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:47,474 INFO L225 Difference]: With dead ends: 885 [2020-11-30 02:03:47,474 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 02:03:47,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 02:03:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-30 02:03:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-30 02:03:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 703 transitions. [2020-11-30 02:03:47,512 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 703 transitions. Word has length 107 [2020-11-30 02:03:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:47,513 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 703 transitions. [2020-11-30 02:03:47,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 703 transitions. [2020-11-30 02:03:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 02:03:47,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:47,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:47,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:47,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash 441530652, now seen corresponding path program 1 times [2020-11-30 02:03:47,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:47,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765180879] [2020-11-30 02:03:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:03:47,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765180879] [2020-11-30 02:03:47,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:47,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:03:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663002197] [2020-11-30 02:03:47,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:47,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:47,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:47,827 INFO L87 Difference]: Start difference. First operand 483 states and 703 transitions. Second operand 3 states. [2020-11-30 02:03:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:48,420 INFO L93 Difference]: Finished difference Result 1285 states and 1835 transitions. [2020-11-30 02:03:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:48,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 02:03:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:48,426 INFO L225 Difference]: With dead ends: 1285 [2020-11-30 02:03:48,426 INFO L226 Difference]: Without dead ends: 803 [2020-11-30 02:03:48,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-30 02:03:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-30 02:03:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-30 02:03:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-11-30 02:03:48,468 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 111 [2020-11-30 02:03:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:48,469 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-11-30 02:03:48,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-11-30 02:03:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-30 02:03:48,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:48,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:48,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:03:48,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:48,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:48,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1989618877, now seen corresponding path program 1 times [2020-11-30 02:03:48,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:48,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223816065] [2020-11-30 02:03:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 02:03:48,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223816065] [2020-11-30 02:03:48,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:48,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:03:48,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396373320] [2020-11-30 02:03:48,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:48,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:48,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:48,566 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-11-30 02:03:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:49,134 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-11-30 02:03:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:49,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-30 02:03:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:49,143 INFO L225 Difference]: With dead ends: 1845 [2020-11-30 02:03:49,143 INFO L226 Difference]: Without dead ends: 963 [2020-11-30 02:03:49,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-30 02:03:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-11-30 02:03:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-30 02:03:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-11-30 02:03:49,173 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-11-30 02:03:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:49,174 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-11-30 02:03:49,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-11-30 02:03:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-30 02:03:49,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:49,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:49,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:03:49,178 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:49,179 INFO L82 PathProgramCache]: Analyzing trace with hash -189555897, now seen corresponding path program 1 times [2020-11-30 02:03:49,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:49,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299755250] [2020-11-30 02:03:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-30 02:03:49,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299755250] [2020-11-30 02:03:49,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981774842] [2020-11-30 02:03:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:49,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:03:49,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 02:03:49,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 02:03:49,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:03:49,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:03:49,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114682193] [2020-11-30 02:03:49,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:49,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:49,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:49,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:49,634 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 3 states. [2020-11-30 02:03:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:50,110 INFO L93 Difference]: Finished difference Result 2325 states and 2779 transitions. [2020-11-30 02:03:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:50,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-11-30 02:03:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:50,121 INFO L225 Difference]: With dead ends: 2325 [2020-11-30 02:03:50,121 INFO L226 Difference]: Without dead ends: 1443 [2020-11-30 02:03:50,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-11-30 02:03:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1203. [2020-11-30 02:03:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-30 02:03:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1409 transitions. [2020-11-30 02:03:50,171 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1409 transitions. Word has length 154 [2020-11-30 02:03:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1409 transitions. [2020-11-30 02:03:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1409 transitions. [2020-11-30 02:03:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-30 02:03:50,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:50,178 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] [2020-11-30 02:03:50,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:50,396 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:50,397 INFO L82 PathProgramCache]: Analyzing trace with hash 989818482, now seen corresponding path program 1 times [2020-11-30 02:03:50,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:50,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468246485] [2020-11-30 02:03:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 02:03:50,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468246485] [2020-11-30 02:03:50,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:50,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:03:50,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874289865] [2020-11-30 02:03:50,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:50,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:50,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:50,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:50,502 INFO L87 Difference]: Start difference. First operand 1203 states and 1409 transitions. Second operand 3 states. [2020-11-30 02:03:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:50,957 INFO L93 Difference]: Finished difference Result 2563 states and 2973 transitions. [2020-11-30 02:03:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:50,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-11-30 02:03:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:50,959 INFO L225 Difference]: With dead ends: 2563 [2020-11-30 02:03:50,959 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:03:50,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:03:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:03:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:03:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:03:50,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 196 [2020-11-30 02:03:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:50,962 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:03:50,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:03:50,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:03:50,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:03:50,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:03:51,146 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-30 02:03:51,257 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-30 02:03:51,260 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:03:51,261 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-30 02:03:51,262 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) .cse2 .cse0) (and (<= 10 ~a28~0) .cse2 .cse0 .cse1) (and (= ~a11~0 1) .cse0 .cse1))) [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-30 02:03:51,263 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and .cse0 (<= ~a25~0 0) .cse1) (and (<= ~a28~0 7) .cse0) (and (= ~a19~0 1) .cse2 .cse0) (and (<= 10 ~a28~0) .cse2 .cse0 .cse1) (and (= ~a11~0 1) .cse0 .cse1))) [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-30 02:03:51,264 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-30 02:03:51,265 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-30 02:03:51,265 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-30 02:03:51,265 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-30 02:03:51,265 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-30 02:03:51,265 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-30 02:03:51,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:51 BoogieIcfgContainer [2020-11-30 02:03:51,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:51,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:51,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:51,293 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:51,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:43" (3/4) ... [2020-11-30 02:03:51,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:03:51,342 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-30 02:03:51,344 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:03:51,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:03:51,347 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:03:51,533 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_58b6e0d0-3dd5-4849-996c-c911d3246511/bin/utaipan/witness.graphml [2020-11-30 02:03:51,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:51,534 INFO L168 Benchmark]: Toolchain (without parser) took 11943.28 ms. Allocated memory was 81.8 MB in the beginning and 251.7 MB in the end (delta: 169.9 MB). Free memory was 50.3 MB in the beginning and 115.1 MB in the end (delta: -64.8 MB). Peak memory consumption was 104.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,535 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:51,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.30 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.0 MB in the beginning and 59.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.05 ms. Allocated memory is still 98.6 MB. Free memory was 59.5 MB in the beginning and 54.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,536 INFO L168 Benchmark]: Boogie Preprocessor took 107.16 ms. Allocated memory is still 98.6 MB. Free memory was 54.3 MB in the beginning and 49.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,536 INFO L168 Benchmark]: RCFGBuilder took 2640.15 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 49.5 MB in the beginning and 42.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,537 INFO L168 Benchmark]: TraceAbstraction took 8157.32 ms. Allocated memory was 123.7 MB in the beginning and 251.7 MB in the end (delta: 127.9 MB). Free memory was 42.3 MB in the beginning and 130.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,537 INFO L168 Benchmark]: Witness Printer took 241.02 ms. Allocated memory is still 251.7 MB. Free memory was 130.8 MB in the beginning and 115.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:51,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 684.30 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 50.0 MB in the beginning and 59.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.05 ms. Allocated memory is still 98.6 MB. Free memory was 59.5 MB in the beginning and 54.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.16 ms. Allocated memory is still 98.6 MB. Free memory was 54.3 MB in the beginning and 49.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2640.15 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 49.5 MB in the beginning and 42.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8157.32 ms. Allocated memory was 123.7 MB in the beginning and 251.7 MB in the end (delta: 127.9 MB). Free memory was 42.3 MB in the beginning and 130.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. * Witness Printer took 241.02 ms. Allocated memory is still 251.7 MB. Free memory was 130.8 MB in the beginning and 115.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a17 <= 8 && a25 <= 0) && a28 <= 10) || (a28 <= 7 && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || (((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 512 SDtfs, 529 SDslu, 41 SDs, 0 SdLazy, 1832 SolverSat, 480 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 526 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 400 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 103 HoareAnnotationTreeSize, 3 FomulaSimplifications, 804 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1334 NumberOfCodeBlocks, 1334 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1582 ConstructedInterpolants, 0 QuantifiedInterpolants, 609884 SizeOfPredicates, 2 NumberOfNonLiveVariables, 697 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 958/982 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...