./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_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_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/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 e9b1c96eed0367583bf25a0e47ad0463a90fc1bd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:37:18,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:18,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:18,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:18,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:18,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:18,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:18,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:18,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:18,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:18,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:18,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:18,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:18,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:18,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:18,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:18,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:18,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:18,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:18,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:18,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:18,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:18,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:18,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:18,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:18,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:18,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:18,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:18,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:18,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:18,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:18,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:18,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:18,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:18,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:18,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:18,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:18,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:18,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:18,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:18,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:18,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:18,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:18,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:18,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:18,287 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:18,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:18,288 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:18,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:18,288 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:18,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:18,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:18,290 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:18,290 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:18,290 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:18,291 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:18,291 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:18,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:18,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:18,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:18,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:18,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:18,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:18,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:18,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:18,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:18,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:18,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:18,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:18,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:18,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:18,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:18,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:18,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:18,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:18,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:18,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:18,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:18,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:18,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:18,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:18,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:18,299 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_57c81964-50f3-40fa-a535-cce819479609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2020-11-28 07:37:18,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:18,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:18,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:18,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:18,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:18,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-11-28 07:37:18,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/data/11a0da613/39ef816d58ab4d76bdcd1f1fa08a1d6a/FLAGe36784432 [2020-11-28 07:37:19,258 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:19,259 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-11-28 07:37:19,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/data/11a0da613/39ef816d58ab4d76bdcd1f1fa08a1d6a/FLAGe36784432 [2020-11-28 07:37:19,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/data/11a0da613/39ef816d58ab4d76bdcd1f1fa08a1d6a [2020-11-28 07:37:19,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:19,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:19,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:19,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:19,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:19,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:19" (1/1) ... [2020-11-28 07:37:19,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f97ffaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:19, skipping insertion in model container [2020-11-28 07:37:19,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:19" (1/1) ... [2020-11-28 07:37:19,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:19,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:20,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:20,066 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:20,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:20,210 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:20,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20 WrapperNode [2020-11-28 07:37:20,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:20,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:20,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:20,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:20,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:20,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:20,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:20,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:20,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... [2020-11-28 07:37:20,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:20,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:20,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:20,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:20,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/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 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:37:20,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:37:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:37:20,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 07:37:20,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 07:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:37:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:20,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:20,359 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 07:37:20,784 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:20,784 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:37:20,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:20 BoogieIcfgContainer [2020-11-28 07:37:20,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:20,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:20,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:20,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:20,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:19" (1/3) ... [2020-11-28 07:37:20,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e433e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:20, skipping insertion in model container [2020-11-28 07:37:20,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:20" (2/3) ... [2020-11-28 07:37:20,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e433e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:20, skipping insertion in model container [2020-11-28 07:37:20,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:20" (3/3) ... [2020-11-28 07:37:20,794 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-11-28 07:37:20,810 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:37:20,810 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:20,814 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:20,815 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:37:20,839 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,839 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,840 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,840 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,840 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,840 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,841 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,841 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,841 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,841 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,842 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,843 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,843 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,843 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,843 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,844 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,882 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,882 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:20,889 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:37:20,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:37:20,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:20,921 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:20,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:20,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:20,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:20,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:20,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:20,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:20,932 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:37:20,934 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 07:37:20,937 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 07:37:20,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 07:37:20,985 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 07:37:20,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:37:20,988 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 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. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 07:37:20,997 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 07:37:23,179 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-28 07:37:23,665 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-28 07:37:23,775 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 07:37:23,780 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-28 07:37:23,780 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-28 07:37:23,786 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 07:37:23,816 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-28 07:37:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-28 07:37:23,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:37:23,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:23,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:23,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:23,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-28 07:37:23,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:23,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065646522] [2020-11-28 07:37:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,130 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 07:37:24,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065646522] [2020-11-28 07:37:24,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:37:24,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882595373] [2020-11-28 07:37:24,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:24,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:24,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,158 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-28 07:37:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,222 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-28 07:37:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:24,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:37:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,244 INFO L225 Difference]: With dead ends: 282 [2020-11-28 07:37:24,246 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 07:37:24,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 07:37:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-28 07:37:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 07:37:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-28 07:37:24,338 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-28 07:37:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,339 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-28 07:37:24,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-28 07:37:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:37:24,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:24,345 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-28 07:37:24,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129877581] [2020-11-28 07:37:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,428 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 07:37:24,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129877581] [2020-11-28 07:37:24,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:24,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620639812] [2020-11-28 07:37:24,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:24,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,432 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-28 07:37:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,447 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-28 07:37:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:24,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 07:37:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,450 INFO L225 Difference]: With dead ends: 202 [2020-11-28 07:37:24,450 INFO L226 Difference]: Without dead ends: 202 [2020-11-28 07:37:24,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-28 07:37:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-28 07:37:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-28 07:37:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-28 07:37:24,465 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-28 07:37:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,465 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-28 07:37:24,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-28 07:37:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:24,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:24,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-28 07:37:24,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294691567] [2020-11-28 07:37:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,512 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 07:37:24,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294691567] [2020-11-28 07:37:24,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:37:24,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863588845] [2020-11-28 07:37:24,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:24,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:24,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,515 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-28 07:37:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,550 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-28 07:37:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:24,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:37:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,553 INFO L225 Difference]: With dead ends: 198 [2020-11-28 07:37:24,553 INFO L226 Difference]: Without dead ends: 198 [2020-11-28 07:37:24,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-28 07:37:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-28 07:37:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-28 07:37:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-28 07:37:24,570 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-11-28 07:37:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,570 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-28 07:37:24,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:24,570 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-28 07:37:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:37:24,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:24,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-11-28 07:37:24,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588001957] [2020-11-28 07:37:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,634 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 07:37:24,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588001957] [2020-11-28 07:37:24,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:37:24,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467561903] [2020-11-28 07:37:24,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,637 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-11-28 07:37:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,647 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-11-28 07:37:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:24,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 07:37:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,651 INFO L225 Difference]: With dead ends: 192 [2020-11-28 07:37:24,651 INFO L226 Difference]: Without dead ends: 192 [2020-11-28 07:37:24,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-28 07:37:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-28 07:37:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-28 07:37:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-11-28 07:37:24,668 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-11-28 07:37:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,669 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-11-28 07:37:24,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-11-28 07:37:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:37:24,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:37:24,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-11-28 07:37:24,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41913244] [2020-11-28 07:37:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,739 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 07:37:24,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41913244] [2020-11-28 07:37:24,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:24,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502035725] [2020-11-28 07:37:24,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:24,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:24,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,741 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-11-28 07:37:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,760 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-11-28 07:37:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:24,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-28 07:37:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,762 INFO L225 Difference]: With dead ends: 248 [2020-11-28 07:37:24,762 INFO L226 Difference]: Without dead ends: 200 [2020-11-28 07:37:24,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-28 07:37:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-28 07:37:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-28 07:37:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-11-28 07:37:24,778 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-11-28 07:37:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,778 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-11-28 07:37:24,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-11-28 07:37:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:37:24,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:37:24,781 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-11-28 07:37:24,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313154393] [2020-11-28 07:37:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,848 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 07:37:24,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313154393] [2020-11-28 07:37:24,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:24,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415488001] [2020-11-28 07:37:24,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:24,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:24,850 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-11-28 07:37:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:24,886 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-11-28 07:37:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:24,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 07:37:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:24,888 INFO L225 Difference]: With dead ends: 260 [2020-11-28 07:37:24,888 INFO L226 Difference]: Without dead ends: 188 [2020-11-28 07:37:24,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 07:37:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-28 07:37:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-28 07:37:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-28 07:37:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-28 07:37:24,898 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-28 07:37:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:24,898 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-28 07:37:24,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-28 07:37:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:37:24,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:24,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:24,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:37:24,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:24,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-11-28 07:37:24,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:24,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444513907] [2020-11-28 07:37:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:24,975 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 07:37:24,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444513907] [2020-11-28 07:37:24,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:24,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:24,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110571813] [2020-11-28 07:37:24,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:24,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:24,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:24,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:24,978 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-11-28 07:37:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:25,021 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-11-28 07:37:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:25,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 07:37:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:25,023 INFO L225 Difference]: With dead ends: 221 [2020-11-28 07:37:25,023 INFO L226 Difference]: Without dead ends: 157 [2020-11-28 07:37:25,024 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 07:37:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-28 07:37:25,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-28 07:37:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 07:37:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-11-28 07:37:25,031 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-11-28 07:37:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:25,031 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-11-28 07:37:25,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-11-28 07:37:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:25,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:25,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:25,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:37:25,033 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-11-28 07:37:25,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:25,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962874248] [2020-11-28 07:37:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:25,116 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 07:37:25,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962874248] [2020-11-28 07:37:25,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:25,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:25,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046517814] [2020-11-28 07:37:25,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:25,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:25,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:25,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:25,119 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-11-28 07:37:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:25,187 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-11-28 07:37:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:25,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:37:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:25,189 INFO L225 Difference]: With dead ends: 159 [2020-11-28 07:37:25,189 INFO L226 Difference]: Without dead ends: 122 [2020-11-28 07:37:25,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-28 07:37:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-28 07:37:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 07:37:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-28 07:37:25,194 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-11-28 07:37:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:25,194 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-28 07:37:25,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-28 07:37:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:37:25,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:25,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:25,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:37:25,195 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-28 07:37:25,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:25,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511678986] [2020-11-28 07:37:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:25,297 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 07:37:25,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511678986] [2020-11-28 07:37:25,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:25,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:37:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774330854] [2020-11-28 07:37:25,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:37:25,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:37:25,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:25,299 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-11-28 07:37:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:25,351 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-28 07:37:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:37:25,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 07:37:25,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:25,353 INFO L225 Difference]: With dead ends: 118 [2020-11-28 07:37:25,353 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 07:37:25,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 07:37:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-28 07:37:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 07:37:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-28 07:37:25,355 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-28 07:37:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:25,356 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-28 07:37:25,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:37:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-28 07:37:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:37:25,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:25,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:25,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:37:25,357 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:25,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-28 07:37:25,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:25,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748475109] [2020-11-28 07:37:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:25,425 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 07:37:25,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748475109] [2020-11-28 07:37:25,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:25,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:25,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107428872] [2020-11-28 07:37:25,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:25,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:25,428 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-28 07:37:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:25,452 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-28 07:37:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:25,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 07:37:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:25,454 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:37:25,454 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 07:37:25,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 07:37:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 07:37:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 07:37:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:37:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-28 07:37:25,456 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-28 07:37:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:25,456 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-28 07:37:25,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-28 07:37:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:37:25,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:25,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:25,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:37:25,458 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:25,458 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-28 07:37:25,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:25,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511610000] [2020-11-28 07:37:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:25,496 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 07:37:25,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511610000] [2020-11-28 07:37:25,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:25,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:25,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174339659] [2020-11-28 07:37:25,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:25,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:25,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:25,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:25,499 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-28 07:37:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:25,519 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-11-28 07:37:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:25,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 07:37:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:25,520 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:37:25,520 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:25,520 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 07:37:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:25,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 07:37:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:25,521 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:25,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:25,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:25,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:37:25,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:25 BasicIcfg [2020-11-28 07:37:25,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:25,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:25,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:25,526 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:25,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:20" (3/4) ... [2020-11-28 07:37:25,532 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:25,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:37:25,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:37:25,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 07:37:25,544 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:37:25,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:37:25,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:25,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:25,602 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57c81964-50f3-40fa-a535-cce819479609/bin/utaipan/witness.graphml [2020-11-28 07:37:25,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:25,604 INFO L168 Benchmark]: Toolchain (without parser) took 6078.91 ms. Allocated memory was 117.4 MB in the beginning and 176.2 MB in the end (delta: 58.7 MB). Free memory was 85.4 MB in the beginning and 128.8 MB in the end (delta: -43.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,604 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:25,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.82 ms. Allocated memory is still 117.4 MB. Free memory was 85.4 MB in the beginning and 72.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.23 ms. Allocated memory is still 117.4 MB. Free memory was 72.9 MB in the beginning and 70.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,606 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 117.4 MB. Free memory was 70.8 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,606 INFO L168 Benchmark]: RCFGBuilder took 496.96 ms. Allocated memory is still 117.4 MB. Free memory was 69.3 MB in the beginning and 47.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,606 INFO L168 Benchmark]: TraceAbstraction took 4737.92 ms. Allocated memory was 117.4 MB in the beginning and 176.2 MB in the end (delta: 58.7 MB). Free memory was 47.1 MB in the beginning and 132.0 MB in the end (delta: -84.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:25,607 INFO L168 Benchmark]: Witness Printer took 77.22 ms. Allocated memory is still 176.2 MB. Free memory was 132.0 MB in the beginning and 128.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:25,609 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 83.9 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.82 ms. Allocated memory is still 117.4 MB. Free memory was 85.4 MB in the beginning and 72.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.23 ms. Allocated memory is still 117.4 MB. Free memory was 72.9 MB in the beginning and 70.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 117.4 MB. Free memory was 70.8 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 496.96 ms. Allocated memory is still 117.4 MB. Free memory was 69.3 MB in the beginning and 47.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4737.92 ms. Allocated memory was 117.4 MB in the beginning and 176.2 MB in the end (delta: 58.7 MB). Free memory was 47.1 MB in the beginning and 132.0 MB in the end (delta: -84.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 77.22 ms. Allocated memory is still 176.2 MB. Free memory was 132.0 MB in the beginning and 128.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...