./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i --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_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/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 2a065c13e78ed395198628ca646c9399c45083a0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:33:53,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:53,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:53,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:53,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:53,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:53,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:53,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:53,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:53,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:53,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:53,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:53,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:53,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:53,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:53,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:53,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:53,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:53,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:53,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:53,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:53,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:53,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:53,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:53,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:53,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:53,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:53,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:53,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:53,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:53,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:53,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:53,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:53,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:53,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:53,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:53,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:53,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:53,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:53,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:53,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:53,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:33:53,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:53,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:53,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:53,364 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:53,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:53,364 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:53,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:33:53,365 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:53,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:53,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:33:53,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:33:53,367 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:53,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:33:53,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:33:53,367 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:33:53,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:53,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:53,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:33:53,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:53,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:53,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:53,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:53,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:53,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:53,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:53,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:53,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:53,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:53,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:53,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:53,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:53,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:53,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:53,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:53,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:53,374 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:33:53,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:33:53,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:53,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:53,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:53,375 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_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a065c13e78ed395198628ca646c9399c45083a0 [2020-11-28 07:33:53,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:53,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:53,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:53,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:53,695 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:53,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-11-28 07:33:53,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/data/a38dafbe3/9de202651b0340f891209587393a5849/FLAG963d2fc8b [2020-11-28 07:33:54,452 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:54,456 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-11-28 07:33:54,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/data/a38dafbe3/9de202651b0340f891209587393a5849/FLAG963d2fc8b [2020-11-28 07:33:54,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/data/a38dafbe3/9de202651b0340f891209587393a5849 [2020-11-28 07:33:54,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:54,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:54,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:54,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:54,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:54,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:54" (1/1) ... [2020-11-28 07:33:54,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726855e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:54, skipping insertion in model container [2020-11-28 07:33:54,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:54" (1/1) ... [2020-11-28 07:33:54,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:54,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:55,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:55,166 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:55,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:55,288 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:55,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55 WrapperNode [2020-11-28 07:33:55,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:55,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:55,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:55,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:55,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:55,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:55,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:55,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:55,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... [2020-11-28 07:33:55,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:55,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:55,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:55,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:55,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:33:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:33:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:33:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:33:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:33:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:33:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 07:33:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 07:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:55,448 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:33:55,986 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:55,986 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:33:55,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:55 BoogieIcfgContainer [2020-11-28 07:33:55,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:55,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:55,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:55,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:55,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:54" (1/3) ... [2020-11-28 07:33:55,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a9d635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:55, skipping insertion in model container [2020-11-28 07:33:55,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:55" (2/3) ... [2020-11-28 07:33:55,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a9d635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:55, skipping insertion in model container [2020-11-28 07:33:55,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:55" (3/3) ... [2020-11-28 07:33:55,998 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-11-28 07:33:56,009 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:33:56,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:56,014 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:33:56,015 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:33:56,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,116 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,116 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,140 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,140 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:33:56,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:33:56,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:33:56,192 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:56,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:56,193 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:56,193 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:56,193 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:56,193 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:56,193 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:56,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:56,209 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:33:56,212 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:56,215 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:56,217 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 07:33:56,284 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 07:33:56,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:33:56,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 07:33:56,295 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 07:33:58,552 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 07:33:58,656 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 07:33:58,656 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 07:33:58,661 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 07:33:58,689 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 07:33:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 07:33:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:33:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:58,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:58,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 07:33:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:58,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125366476] [2020-11-28 07:33:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:58,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125366476] [2020-11-28 07:33:58,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:58,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:58,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231721532] [2020-11-28 07:33:58,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:33:58,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:58,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:33:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:58,895 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 07:33:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:58,932 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 07:33:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:33:58,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:33:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:58,954 INFO L225 Difference]: With dead ends: 362 [2020-11-28 07:33:58,958 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 07:33:58,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 07:33:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 07:33:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 07:33:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 07:33:59,056 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 07:33:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:59,057 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 07:33:59,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:33:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 07:33:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:33:59,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:59,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:59,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:33:59,060 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 07:33:59,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:59,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590322531] [2020-11-28 07:33:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:59,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590322531] [2020-11-28 07:33:59,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:59,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:59,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43121580] [2020-11-28 07:33:59,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:59,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:59,227 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 07:33:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:59,318 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 07:33:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:59,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:33:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:59,324 INFO L225 Difference]: With dead ends: 330 [2020-11-28 07:33:59,324 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 07:33:59,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 07:33:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 07:33:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 07:33:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 07:33:59,352 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 07:33:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:59,352 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 07:33:59,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 07:33:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:33:59,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:59,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:59,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:33:59,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:59,366 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 07:33:59,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:59,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011525146] [2020-11-28 07:33:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:59,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011525146] [2020-11-28 07:33:59,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:59,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:59,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958215576] [2020-11-28 07:33:59,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:59,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:59,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:59,507 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-28 07:33:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:59,585 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-28 07:33:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:59,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 07:33:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:59,593 INFO L225 Difference]: With dead ends: 290 [2020-11-28 07:33:59,593 INFO L226 Difference]: Without dead ends: 242 [2020-11-28 07:33:59,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-28 07:33:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-28 07:33:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-28 07:33:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-28 07:33:59,620 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-28 07:33:59,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:59,620 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-28 07:33:59,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-28 07:33:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:59,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:59,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:59,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:33:59,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:59,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-11-28 07:33:59,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:59,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171875331] [2020-11-28 07:33:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:59,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171875331] [2020-11-28 07:33:59,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:59,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:33:59,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160185570] [2020-11-28 07:33:59,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:59,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:59,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:59,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:59,737 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-11-28 07:33:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:59,756 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-28 07:33:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:59,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:33:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:59,760 INFO L225 Difference]: With dead ends: 260 [2020-11-28 07:33:59,760 INFO L226 Difference]: Without dead ends: 224 [2020-11-28 07:33:59,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-28 07:33:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-28 07:33:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-28 07:33:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-28 07:33:59,784 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-28 07:33:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:59,785 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-28 07:33:59,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-28 07:33:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:33:59,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:59,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:59,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:33:59,788 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:59,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-11-28 07:33:59,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:59,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817090171] [2020-11-28 07:33:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:59,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817090171] [2020-11-28 07:33:59,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:59,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:59,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288597600] [2020-11-28 07:33:59,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:59,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:59,867 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-11-28 07:33:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:59,911 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-11-28 07:33:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:59,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:33:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:59,913 INFO L225 Difference]: With dead ends: 293 [2020-11-28 07:33:59,913 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 07:33:59,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:33:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 07:33:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-28 07:33:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 07:33:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-11-28 07:33:59,922 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-11-28 07:33:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:59,923 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-11-28 07:33:59,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-11-28 07:33:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:59,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:59,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:59,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:33:59,924 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:59,925 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-11-28 07:33:59,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:59,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649406687] [2020-11-28 07:33:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:00,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649406687] [2020-11-28 07:34:00,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:00,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:00,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143941134] [2020-11-28 07:34:00,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:34:00,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:34:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:34:00,025 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-11-28 07:34:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:00,064 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-11-28 07:34:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:34:00,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:34:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:00,066 INFO L225 Difference]: With dead ends: 160 [2020-11-28 07:34:00,066 INFO L226 Difference]: Without dead ends: 142 [2020-11-28 07:34:00,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:34:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-28 07:34:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-28 07:34:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-28 07:34:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-11-28 07:34:00,073 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-11-28 07:34:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:00,073 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-11-28 07:34:00,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:34:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-11-28 07:34:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:34:00,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:00,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:00,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:34:00,079 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:00,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-11-28 07:34:00,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:00,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472928642] [2020-11-28 07:34:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:00,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472928642] [2020-11-28 07:34:00,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:00,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:34:00,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966635961] [2020-11-28 07:34:00,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:34:00,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:00,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:34:00,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:34:00,209 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-11-28 07:34:00,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:00,260 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-11-28 07:34:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:34:00,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 07:34:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:00,262 INFO L225 Difference]: With dead ends: 186 [2020-11-28 07:34:00,262 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 07:34:00,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:34:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 07:34:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 07:34:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 07:34:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-28 07:34:00,265 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-11-28 07:34:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:00,265 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-28 07:34:00,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:34:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-28 07:34:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:34:00,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:00,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:00,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:34:00,266 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-11-28 07:34:00,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:00,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90093854] [2020-11-28 07:34:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:00,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90093854] [2020-11-28 07:34:00,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:00,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:34:00,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252918816] [2020-11-28 07:34:00,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:34:00,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:00,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:34:00,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:00,368 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-11-28 07:34:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:00,445 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-28 07:34:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:34:00,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:34:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:00,445 INFO L225 Difference]: With dead ends: 62 [2020-11-28 07:34:00,445 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:00,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:34:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:00,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 07:34:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:00,447 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:00,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:34:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:00,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:00,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:34:00,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:00 BasicIcfg [2020-11-28 07:34:00,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:00,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:00,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:00,451 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:00,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:55" (3/4) ... [2020-11-28 07:34:00,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:00,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:34:00,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:34:00,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 07:34:00,464 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:34:00,464 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:34:00,465 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:34:00,465 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:34:00,516 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b81174e5-e61f-4d7e-a8e0-d4f80f6b3226/bin/utaipan/witness.graphml [2020-11-28 07:34:00,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:00,519 INFO L168 Benchmark]: Toolchain (without parser) took 5811.48 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 81.2 MB in the beginning and 105.4 MB in the end (delta: -24.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:00,520 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:00,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.03 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 69.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:00,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 113.2 MB. Free memory was 69.2 MB in the beginning and 67.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:00,528 INFO L168 Benchmark]: Boogie Preprocessor took 26.42 ms. Allocated memory is still 113.2 MB. Free memory was 67.1 MB in the beginning and 66.2 MB in the end (delta: 952.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:00,529 INFO L168 Benchmark]: RCFGBuilder took 628.98 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 44.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:00,532 INFO L168 Benchmark]: TraceAbstraction took 4458.81 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 43.5 MB in the beginning and 107.5 MB in the end (delta: -64.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:00,533 INFO L168 Benchmark]: Witness Printer took 65.59 ms. Allocated memory is still 163.6 MB. Free memory was 107.5 MB in the beginning and 105.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:00,535 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 75.5 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.03 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 69.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 113.2 MB. Free memory was 69.2 MB in the beginning and 67.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.42 ms. Allocated memory is still 113.2 MB. Free memory was 67.1 MB in the beginning and 66.2 MB in the end (delta: 952.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 628.98 ms. Allocated memory is still 113.2 MB. Free memory was 66.2 MB in the beginning and 44.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4458.81 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 43.5 MB in the beginning and 107.5 MB in the end (delta: -64.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.59 ms. Allocated memory is still 163.6 MB. Free memory was 107.5 MB in the beginning and 105.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...