./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.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_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/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 f99de79ed9343ed7ff4227bdc9de57b9c5de7421 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:20:27,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:20:27,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:20:27,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:20:27,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:20:27,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:20:27,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:20:27,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:20:27,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:20:27,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:20:27,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:20:27,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:20:27,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:20:27,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:20:27,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:20:27,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:20:27,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:20:27,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:20:27,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:20:27,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:20:27,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:20:27,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:20:27,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:20:27,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:20:27,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:20:27,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:20:27,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:20:27,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:20:27,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:20:27,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:20:27,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:20:27,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:20:27,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:20:27,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:20:27,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:20:27,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:20:27,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:20:27,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:20:27,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:20:27,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:20:27,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:20:27,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:20:27,383 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:20:27,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:20:27,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:20:27,384 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:20:27,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:20:27,384 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:20:27,384 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:20:27,384 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:20:27,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:20:27,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:20:27,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:20:27,385 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:20:27,385 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:20:27,385 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:20:27,386 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:20:27,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:20:27,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:20:27,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:20:27,387 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:20:27,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:20:27,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:20:27,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:20:27,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:20:27,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:20:27,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:20:27,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:20:27,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:20:27,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:20:27,389 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:20:27,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:20:27,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:20:27,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:20:27,390 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_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/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 -> f99de79ed9343ed7ff4227bdc9de57b9c5de7421 [2019-11-26 02:20:27,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:20:27,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:20:27,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:20:27,534 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:20:27,535 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:20:27,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2019-11-26 02:20:27,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/data/40cfcb640/76306b43c1e544c3b7d3e938dffc54e4/FLAGdb145cab7 [2019-11-26 02:20:28,052 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:20:28,053 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2019-11-26 02:20:28,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/data/40cfcb640/76306b43c1e544c3b7d3e938dffc54e4/FLAGdb145cab7 [2019-11-26 02:20:28,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/data/40cfcb640/76306b43c1e544c3b7d3e938dffc54e4 [2019-11-26 02:20:28,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:20:28,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:20:28,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:28,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:20:28,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:20:28,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1873f192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28, skipping insertion in model container [2019-11-26 02:20:28,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:20:28,141 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:20:28,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:28,549 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:20:28,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:20:28,678 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:20:28,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28 WrapperNode [2019-11-26 02:20:28,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:20:28,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:28,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:20:28,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:20:28,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:20:28,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:20:28,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:20:28,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:20:28,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... [2019-11-26 02:20:28,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:20:28,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:20:28,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:20:28,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:20:28,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/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 02:20:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:20:28,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:20:28,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:20:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:20:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:20:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:20:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:20:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:20:28,839 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:20:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:20:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:20:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:20:28,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:20:28,844 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 02:20:29,225 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:20:29,226 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:20:29,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:29 BoogieIcfgContainer [2019-11-26 02:20:29,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:20:29,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:20:29,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:20:29,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:20:29,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:20:28" (1/3) ... [2019-11-26 02:20:29,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358c4e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:29, skipping insertion in model container [2019-11-26 02:20:29,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:20:28" (2/3) ... [2019-11-26 02:20:29,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358c4e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:20:29, skipping insertion in model container [2019-11-26 02:20:29,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:29" (3/3) ... [2019-11-26 02:20:29,233 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2019-11-26 02:20:29,285 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,285 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,285 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,286 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,286 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,286 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,286 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,287 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,287 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,287 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,288 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,288 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,288 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,289 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,289 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,289 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,289 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,289 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,290 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,290 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,290 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,290 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,291 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,291 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,291 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,291 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,292 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,292 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,292 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,292 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,293 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,293 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,293 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,293 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,293 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,294 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,294 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,294 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,294 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,295 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,295 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,295 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,295 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,296 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,296 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,296 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,296 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,296 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:20:29,316 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:20:29,316 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:20:29,323 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:20:29,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:20:29,350 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:20:29,351 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:20:29,351 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:20:29,351 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:20:29,351 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:20:29,351 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:20:29,352 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:20:29,352 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:20:29,362 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 75 transitions [2019-11-26 02:20:29,494 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1248 states. [2019-11-26 02:20:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states. [2019-11-26 02:20:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:20:29,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:29,511 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 02:20:29,512 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 644822426, now seen corresponding path program 1 times [2019-11-26 02:20:29,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:29,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865698684] [2019-11-26 02:20:29,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:29,832 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 02:20:29,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865698684] [2019-11-26 02:20:29,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:29,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:20:29,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334400339] [2019-11-26 02:20:29,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:20:29,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:29,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:20:29,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:20:29,863 INFO L87 Difference]: Start difference. First operand 1248 states. Second operand 4 states. [2019-11-26 02:20:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:29,955 INFO L93 Difference]: Finished difference Result 1295 states and 3961 transitions. [2019-11-26 02:20:29,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:20:29,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-26 02:20:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:29,988 INFO L225 Difference]: With dead ends: 1295 [2019-11-26 02:20:29,990 INFO L226 Difference]: Without dead ends: 601 [2019-11-26 02:20:29,991 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 02:20:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-11-26 02:20:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2019-11-26 02:20:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-11-26 02:20:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1776 transitions. [2019-11-26 02:20:30,087 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1776 transitions. Word has length 31 [2019-11-26 02:20:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:30,088 INFO L462 AbstractCegarLoop]: Abstraction has 601 states and 1776 transitions. [2019-11-26 02:20:30,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:20:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1776 transitions. [2019-11-26 02:20:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:20:30,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:30,092 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 02:20:30,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:30,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1114092486, now seen corresponding path program 1 times [2019-11-26 02:20:30,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:30,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717033930] [2019-11-26 02:20:30,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:30,251 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 02:20:30,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717033930] [2019-11-26 02:20:30,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:30,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:20:30,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879154557] [2019-11-26 02:20:30,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:20:30,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:30,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:20:30,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:20:30,253 INFO L87 Difference]: Start difference. First operand 601 states and 1776 transitions. Second operand 5 states. [2019-11-26 02:20:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:30,332 INFO L93 Difference]: Finished difference Result 601 states and 1695 transitions. [2019-11-26 02:20:30,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:20:30,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-26 02:20:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:30,340 INFO L225 Difference]: With dead ends: 601 [2019-11-26 02:20:30,340 INFO L226 Difference]: Without dead ends: 538 [2019-11-26 02:20:30,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:20:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-26 02:20:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-11-26 02:20:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-11-26 02:20:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1545 transitions. [2019-11-26 02:20:30,391 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1545 transitions. Word has length 32 [2019-11-26 02:20:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:30,392 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 1545 transitions. [2019-11-26 02:20:30,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:20:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1545 transitions. [2019-11-26 02:20:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:20:30,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:30,398 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 02:20:30,398 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash 685985648, now seen corresponding path program 1 times [2019-11-26 02:20:30,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:30,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017303335] [2019-11-26 02:20:30,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:30,538 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 02:20:30,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017303335] [2019-11-26 02:20:30,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:30,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:20:30,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250048370] [2019-11-26 02:20:30,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:20:30,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:30,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:20:30,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:20:30,541 INFO L87 Difference]: Start difference. First operand 538 states and 1545 transitions. Second operand 6 states. [2019-11-26 02:20:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:30,742 INFO L93 Difference]: Finished difference Result 403 states and 1059 transitions. [2019-11-26 02:20:30,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:20:30,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-26 02:20:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:30,747 INFO L225 Difference]: With dead ends: 403 [2019-11-26 02:20:30,747 INFO L226 Difference]: Without dead ends: 349 [2019-11-26 02:20:30,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:20:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-11-26 02:20:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2019-11-26 02:20:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-26 02:20:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 915 transitions. [2019-11-26 02:20:30,772 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 915 transitions. Word has length 33 [2019-11-26 02:20:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:30,774 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 915 transitions. [2019-11-26 02:20:30,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:20:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 915 transitions. [2019-11-26 02:20:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:20:30,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:30,776 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 02:20:30,777 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:30,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:30,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2035368650, now seen corresponding path program 1 times [2019-11-26 02:20:30,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:30,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808488716] [2019-11-26 02:20:30,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:30,974 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 02:20:30,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808488716] [2019-11-26 02:20:30,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:30,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:20:30,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207016470] [2019-11-26 02:20:30,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:20:30,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:20:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:20:30,976 INFO L87 Difference]: Start difference. First operand 349 states and 915 transitions. Second operand 6 states. [2019-11-26 02:20:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:31,092 INFO L93 Difference]: Finished difference Result 529 states and 1416 transitions. [2019-11-26 02:20:31,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:20:31,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-26 02:20:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:31,096 INFO L225 Difference]: With dead ends: 529 [2019-11-26 02:20:31,096 INFO L226 Difference]: Without dead ends: 322 [2019-11-26 02:20:31,096 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 02:20:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-11-26 02:20:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 304. [2019-11-26 02:20:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-11-26 02:20:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 780 transitions. [2019-11-26 02:20:31,112 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 780 transitions. Word has length 34 [2019-11-26 02:20:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:31,113 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 780 transitions. [2019-11-26 02:20:31,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:20:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 780 transitions. [2019-11-26 02:20:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:20:31,119 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:31,119 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 02:20:31,120 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 46374848, now seen corresponding path program 2 times [2019-11-26 02:20:31,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:31,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249322988] [2019-11-26 02:20:31,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:31,296 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 02:20:31,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249322988] [2019-11-26 02:20:31,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:31,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:20:31,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31542191] [2019-11-26 02:20:31,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:20:31,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:20:31,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:20:31,298 INFO L87 Difference]: Start difference. First operand 304 states and 780 transitions. Second operand 7 states. [2019-11-26 02:20:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:31,410 INFO L93 Difference]: Finished difference Result 475 states and 1260 transitions. [2019-11-26 02:20:31,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:20:31,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-26 02:20:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:31,414 INFO L225 Difference]: With dead ends: 475 [2019-11-26 02:20:31,414 INFO L226 Difference]: Without dead ends: 277 [2019-11-26 02:20:31,414 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 02:20:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-11-26 02:20:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2019-11-26 02:20:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-26 02:20:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 726 transitions. [2019-11-26 02:20:31,425 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 726 transitions. Word has length 34 [2019-11-26 02:20:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:31,426 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 726 transitions. [2019-11-26 02:20:31,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:20:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 726 transitions. [2019-11-26 02:20:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:20:31,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:31,428 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 02:20:31,428 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:31,429 INFO L82 PathProgramCache]: Analyzing trace with hash 843885986, now seen corresponding path program 3 times [2019-11-26 02:20:31,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:31,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886471804] [2019-11-26 02:20:31,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:31,578 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 02:20:31,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886471804] [2019-11-26 02:20:31,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:31,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:20:31,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217715185] [2019-11-26 02:20:31,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:20:31,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:31,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:20:31,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:31,580 INFO L87 Difference]: Start difference. First operand 277 states and 726 transitions. Second operand 8 states. [2019-11-26 02:20:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:31,703 INFO L93 Difference]: Finished difference Result 439 states and 1185 transitions. [2019-11-26 02:20:31,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:20:31,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-26 02:20:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:31,706 INFO L225 Difference]: With dead ends: 439 [2019-11-26 02:20:31,706 INFO L226 Difference]: Without dead ends: 253 [2019-11-26 02:20:31,706 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 02:20:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-26 02:20:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-11-26 02:20:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2019-11-26 02:20:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 672 transitions. [2019-11-26 02:20:31,715 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 672 transitions. Word has length 34 [2019-11-26 02:20:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:31,716 INFO L462 AbstractCegarLoop]: Abstraction has 253 states and 672 transitions. [2019-11-26 02:20:31,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:20:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 672 transitions. [2019-11-26 02:20:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:20:31,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:20:31,718 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 02:20:31,718 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:20:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:20:31,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1031875116, now seen corresponding path program 4 times [2019-11-26 02:20:31,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:20:31,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997069354] [2019-11-26 02:20:31,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:20:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:20:31,865 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 02:20:31,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997069354] [2019-11-26 02:20:31,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:20:31,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:20:31,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005273575] [2019-11-26 02:20:31,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:20:31,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:20:31,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:20:31,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:20:31,867 INFO L87 Difference]: Start difference. First operand 253 states and 672 transitions. Second operand 8 states. [2019-11-26 02:20:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:20:31,976 INFO L93 Difference]: Finished difference Result 199 states and 510 transitions. [2019-11-26 02:20:31,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:20:31,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-26 02:20:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:20:31,976 INFO L225 Difference]: With dead ends: 199 [2019-11-26 02:20:31,976 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:20:31,979 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 02:20:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:20:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:20:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:20:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:20:31,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-26 02:20:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:20:31,980 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:20:31,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:20:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:20:31,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:20:31,983 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:20:31,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:20:31 BasicIcfg [2019-11-26 02:20:31,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:20:31,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:20:31,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:20:31,985 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:20:31,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:20:29" (3/4) ... [2019-11-26 02:20:31,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:20:31,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:20:31,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:20:31,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:20:31,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:20:31,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:20:31,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:20:32,033 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3aa8cceb-b8a6-4160-8b1d-e9d8a4e904e6/bin/utaipan/witness.graphml [2019-11-26 02:20:32,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:20:32,036 INFO L168 Benchmark]: Toolchain (without parser) took 3942.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:32,036 INFO L168 Benchmark]: CDTParser took 0.23 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 02:20:32,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:32,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.39 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 02:20:32,037 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 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 02:20:32,038 INFO L168 Benchmark]: RCFGBuilder took 464.81 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:32,038 INFO L168 Benchmark]: TraceAbstraction took 2756.51 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: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:20:32,039 INFO L168 Benchmark]: Witness Printer took 49.62 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 02:20:32,041 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 585.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.39 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 26.27 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 464.81 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2756.51 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: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.62 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: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 423 SDslu, 919 SDs, 0 SdLazy, 124 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s 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, 0.2s 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...