./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0564d476225c5df67b220d9e93a629665962cafa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:14:35,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:14:35,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:14:35,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:14:35,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:14:35,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:14:35,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:14:35,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:14:35,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:14:35,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:14:35,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:14:35,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:14:35,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:14:35,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:14:35,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:14:35,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:14:35,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:14:35,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:14:35,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:14:35,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:14:35,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:14:35,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:14:35,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:14:35,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:14:35,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:14:35,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:14:35,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:14:35,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:14:35,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:14:35,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:14:35,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:14:35,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:14:35,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:14:35,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:14:35,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:14:35,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:14:35,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:14:35,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:14:35,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:14:35,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:14:35,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:14:35,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:14:35,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:14:35,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:14:35,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:14:35,479 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:14:35,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:14:35,479 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:14:35,479 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:14:35,480 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:14:35,480 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:14:35,480 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:14:35,480 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:14:35,480 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:14:35,481 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:14:35,481 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:14:35,481 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:14:35,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:14:35,482 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:14:35,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:14:35,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:14:35,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:14:35,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:14:35,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:14:35,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:14:35,484 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:14:35,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:14:35,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:14:35,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:14:35,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:14:35,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:14:35,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:14:35,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:14:35,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:14:35,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:14:35,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:14:35,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:14:35,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:14:35,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:14:35,487 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_92efea15-9c78-4da7-90b5-e4ed5359c604/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(__VERIFIER_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 -> 0564d476225c5df67b220d9e93a629665962cafa [2019-11-26 02:14:35,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:14:35,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:14:35,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:14:35,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:14:35,653 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:14:35,654 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2019-11-26 02:14:35,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/data/b82d1d9f3/3cfba9bea0e74eb495ec85eebe1529c0/FLAG0f8360b0a [2019-11-26 02:14:36,172 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:14:36,173 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2019-11-26 02:14:36,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/data/b82d1d9f3/3cfba9bea0e74eb495ec85eebe1529c0/FLAG0f8360b0a [2019-11-26 02:14:36,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/data/b82d1d9f3/3cfba9bea0e74eb495ec85eebe1529c0 [2019-11-26 02:14:36,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:14:36,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:14:36,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:14:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:14:36,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:14:36,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:14:36" (1/1) ... [2019-11-26 02:14:36,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb61510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:36, skipping insertion in model container [2019-11-26 02:14:36,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:14:36" (1/1) ... [2019-11-26 02:14:36,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:14:36,528 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:14:36,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:14:36,974 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:14:37,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:14:37,124 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:14:37,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37 WrapperNode [2019-11-26 02:14:37,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:14:37,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:14:37,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:14:37,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:14:37,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:14:37,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:14:37,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:14:37,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:14:37,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... [2019-11-26 02:14:37,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:14:37,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:14:37,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:14:37,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:14:37,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/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 [2019-11-26 02:14:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:14:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:14:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:14:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:14:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:14:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:14:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:14:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:14:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:14:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:14:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:14:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:14:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:14:37,292 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:14:37,600 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:14:37,600 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:14:37,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:37 BoogieIcfgContainer [2019-11-26 02:14:37,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:14:37,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:14:37,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:14:37,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:14:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:14:36" (1/3) ... [2019-11-26 02:14:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b305088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:14:37, skipping insertion in model container [2019-11-26 02:14:37,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:37" (2/3) ... [2019-11-26 02:14:37,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b305088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:14:37, skipping insertion in model container [2019-11-26 02:14:37,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:37" (3/3) ... [2019-11-26 02:14:37,607 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2019-11-26 02:14:37,647 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,648 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,648 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,648 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,648 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,649 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,649 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,649 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,649 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,649 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,651 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,651 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,651 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,652 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,652 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,652 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,652 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,652 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,653 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,653 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,653 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,654 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,654 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,654 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,654 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,654 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,655 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,655 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,655 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,655 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,656 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,656 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,657 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,657 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,657 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,657 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,658 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,658 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,658 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,658 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,658 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,659 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,659 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,659 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,659 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,659 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:14:37,681 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:14:37,681 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:14:37,688 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:14:37,697 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:14:37,714 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:14:37,714 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:14:37,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:14:37,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:14:37,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:14:37,715 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:14:37,715 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:14:37,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:14:37,724 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 75 transitions [2019-11-26 02:14:37,850 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1248 states. [2019-11-26 02:14:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states. [2019-11-26 02:14:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:14:37,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:37,867 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:37,867 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:37,872 INFO L82 PathProgramCache]: Analyzing trace with hash 644822426, now seen corresponding path program 1 times [2019-11-26 02:14:37,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:37,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627966313] [2019-11-26 02:14:37,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:38,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627966313] [2019-11-26 02:14:38,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:38,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:14:38,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042801096] [2019-11-26 02:14:38,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:14:38,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:14:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:14:38,212 INFO L87 Difference]: Start difference. First operand 1248 states. Second operand 4 states. [2019-11-26 02:14:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:38,301 INFO L93 Difference]: Finished difference Result 1295 states and 3961 transitions. [2019-11-26 02:14:38,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:14:38,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-26 02:14:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:38,329 INFO L225 Difference]: With dead ends: 1295 [2019-11-26 02:14:38,329 INFO L226 Difference]: Without dead ends: 601 [2019-11-26 02:14:38,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:14:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-11-26 02:14:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2019-11-26 02:14:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-11-26 02:14:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1776 transitions. [2019-11-26 02:14:38,423 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1776 transitions. Word has length 31 [2019-11-26 02:14:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:38,423 INFO L462 AbstractCegarLoop]: Abstraction has 601 states and 1776 transitions. [2019-11-26 02:14:38,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:14:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1776 transitions. [2019-11-26 02:14:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:14:38,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:38,427 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:38,427 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:38,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1114092486, now seen corresponding path program 1 times [2019-11-26 02:14:38,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:38,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39025568] [2019-11-26 02:14:38,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:38,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39025568] [2019-11-26 02:14:38,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:38,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:14:38,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893285463] [2019-11-26 02:14:38,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:14:38,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:14:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:14:38,566 INFO L87 Difference]: Start difference. First operand 601 states and 1776 transitions. Second operand 5 states. [2019-11-26 02:14:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:38,640 INFO L93 Difference]: Finished difference Result 601 states and 1695 transitions. [2019-11-26 02:14:38,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:14:38,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-26 02:14:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:38,646 INFO L225 Difference]: With dead ends: 601 [2019-11-26 02:14:38,646 INFO L226 Difference]: Without dead ends: 538 [2019-11-26 02:14:38,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:14:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-26 02:14:38,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-11-26 02:14:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-11-26 02:14:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1545 transitions. [2019-11-26 02:14:38,678 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1545 transitions. Word has length 32 [2019-11-26 02:14:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:38,678 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 1545 transitions. [2019-11-26 02:14:38,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:14:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1545 transitions. [2019-11-26 02:14:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:14:38,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:38,681 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:38,681 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash 685985648, now seen corresponding path program 1 times [2019-11-26 02:14:38,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:38,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024535120] [2019-11-26 02:14:38,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:38,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024535120] [2019-11-26 02:14:38,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:38,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:14:38,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48046374] [2019-11-26 02:14:38,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:14:38,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:14:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:14:38,829 INFO L87 Difference]: Start difference. First operand 538 states and 1545 transitions. Second operand 6 states. [2019-11-26 02:14:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:38,932 INFO L93 Difference]: Finished difference Result 403 states and 1059 transitions. [2019-11-26 02:14:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:14:38,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-26 02:14:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:38,937 INFO L225 Difference]: With dead ends: 403 [2019-11-26 02:14:38,937 INFO L226 Difference]: Without dead ends: 349 [2019-11-26 02:14:38,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:14:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-11-26 02:14:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2019-11-26 02:14:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-26 02:14:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 915 transitions. [2019-11-26 02:14:38,952 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 915 transitions. Word has length 33 [2019-11-26 02:14:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:38,952 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 915 transitions. [2019-11-26 02:14:38,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:14:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 915 transitions. [2019-11-26 02:14:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:14:38,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:38,955 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:38,955 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2035368650, now seen corresponding path program 1 times [2019-11-26 02:14:38,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:38,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339614503] [2019-11-26 02:14:38,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:39,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339614503] [2019-11-26 02:14:39,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:39,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:14:39,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044707417] [2019-11-26 02:14:39,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:14:39,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:39,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:14:39,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:14:39,121 INFO L87 Difference]: Start difference. First operand 349 states and 915 transitions. Second operand 6 states. [2019-11-26 02:14:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:39,239 INFO L93 Difference]: Finished difference Result 529 states and 1416 transitions. [2019-11-26 02:14:39,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:14:39,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-26 02:14:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:39,243 INFO L225 Difference]: With dead ends: 529 [2019-11-26 02:14:39,243 INFO L226 Difference]: Without dead ends: 322 [2019-11-26 02:14:39,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:14:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-11-26 02:14:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 304. [2019-11-26 02:14:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-11-26 02:14:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 780 transitions. [2019-11-26 02:14:39,256 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 780 transitions. Word has length 34 [2019-11-26 02:14:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:39,256 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 780 transitions. [2019-11-26 02:14:39,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:14:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 780 transitions. [2019-11-26 02:14:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:14:39,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:39,258 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:39,258 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:39,258 INFO L82 PathProgramCache]: Analyzing trace with hash 46374848, now seen corresponding path program 2 times [2019-11-26 02:14:39,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:39,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453531977] [2019-11-26 02:14:39,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:39,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453531977] [2019-11-26 02:14:39,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:39,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:14:39,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229804178] [2019-11-26 02:14:39,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:14:39,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:39,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:14:39,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:14:39,392 INFO L87 Difference]: Start difference. First operand 304 states and 780 transitions. Second operand 7 states. [2019-11-26 02:14:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:39,495 INFO L93 Difference]: Finished difference Result 475 states and 1260 transitions. [2019-11-26 02:14:39,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:14:39,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-26 02:14:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:39,500 INFO L225 Difference]: With dead ends: 475 [2019-11-26 02:14:39,500 INFO L226 Difference]: Without dead ends: 277 [2019-11-26 02:14:39,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:14:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-11-26 02:14:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2019-11-26 02:14:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-26 02:14:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 726 transitions. [2019-11-26 02:14:39,514 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 726 transitions. Word has length 34 [2019-11-26 02:14:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:39,515 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 726 transitions. [2019-11-26 02:14:39,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:14:39,515 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 726 transitions. [2019-11-26 02:14:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:14:39,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:39,517 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:39,518 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 843885986, now seen corresponding path program 3 times [2019-11-26 02:14:39,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:39,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665013096] [2019-11-26 02:14:39,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:39,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665013096] [2019-11-26 02:14:39,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:39,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:14:39,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377675574] [2019-11-26 02:14:39,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:14:39,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:39,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:14:39,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:14:39,705 INFO L87 Difference]: Start difference. First operand 277 states and 726 transitions. Second operand 8 states. [2019-11-26 02:14:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:39,801 INFO L93 Difference]: Finished difference Result 439 states and 1185 transitions. [2019-11-26 02:14:39,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:14:39,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-26 02:14:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:39,803 INFO L225 Difference]: With dead ends: 439 [2019-11-26 02:14:39,804 INFO L226 Difference]: Without dead ends: 253 [2019-11-26 02:14:39,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:14:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-26 02:14:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-11-26 02:14:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2019-11-26 02:14:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 672 transitions. [2019-11-26 02:14:39,812 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 672 transitions. Word has length 34 [2019-11-26 02:14:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:39,812 INFO L462 AbstractCegarLoop]: Abstraction has 253 states and 672 transitions. [2019-11-26 02:14:39,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:14:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 672 transitions. [2019-11-26 02:14:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:14:39,813 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:39,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:39,814 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:14:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1031875116, now seen corresponding path program 4 times [2019-11-26 02:14:39,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:39,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322725829] [2019-11-26 02:14:39,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:39,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322725829] [2019-11-26 02:14:39,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:39,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:14:39,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820674055] [2019-11-26 02:14:39,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:14:39,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:14:39,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:14:39,923 INFO L87 Difference]: Start difference. First operand 253 states and 672 transitions. Second operand 8 states. [2019-11-26 02:14:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:40,001 INFO L93 Difference]: Finished difference Result 199 states and 510 transitions. [2019-11-26 02:14:40,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:14:40,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-26 02:14:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:40,002 INFO L225 Difference]: With dead ends: 199 [2019-11-26 02:14:40,002 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:14:40,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:14:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:14:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:14:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:14:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:14:40,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-26 02:14:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:40,003 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:14:40,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:14:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:14:40,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:14:40,005 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:14:40,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:14:40 BasicIcfg [2019-11-26 02:14:40,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:14:40,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:14:40,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:14:40,007 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:14:40,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:37" (3/4) ... [2019-11-26 02:14:40,010 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:14:40,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:14:40,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:14:40,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:14:40,033 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:14:40,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:14:40,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:14:40,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_92efea15-9c78-4da7-90b5-e4ed5359c604/bin/utaipan/witness.graphml [2019-11-26 02:14:40,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:14:40,088 INFO L168 Benchmark]: Toolchain (without parser) took 3640.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:40,089 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:40,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:40,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:40,090 INFO L168 Benchmark]: Boogie Preprocessor took 31.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:40,090 INFO L168 Benchmark]: RCFGBuilder took 374.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:40,091 INFO L168 Benchmark]: TraceAbstraction took 2404.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:40,091 INFO L168 Benchmark]: Witness Printer took 79.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:40,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 675.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 374.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2404.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 79.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 13 procedures, 90 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 423 SDslu, 919 SDs, 0 SdLazy, 124 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1248occurred 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 22035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...