./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_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_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/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 52fb212ec99341e6f9f48006fcd8fa26d0c18e53 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:16:50,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:16:50,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:16:50,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:16:50,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:16:50,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:16:50,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:16:50,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:16:50,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:16:50,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:16:50,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:16:50,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:16:50,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:16:50,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:16:50,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:16:50,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:16:50,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:16:50,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:16:50,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:16:50,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:16:50,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:16:50,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:16:50,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:16:50,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:16:50,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:16:50,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:16:50,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:16:50,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:16:50,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:16:50,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:16:50,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:16:50,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:16:50,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:16:50,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:16:50,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:16:50,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:16:50,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:16:50,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:16:50,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:16:50,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:16:50,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:16:50,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:16:50,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:16:50,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:16:50,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:16:50,292 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:16:50,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:16:50,293 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:16:50,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:16:50,293 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:16:50,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:16:50,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:16:50,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:16:50,294 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:16:50,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:16:50,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:16:50,295 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:16:50,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:16:50,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:16:50,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:16:50,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:16:50,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:16:50,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:16:50,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:16:50,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:16:50,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:16:50,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:16:50,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:16:50,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:16:50,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:16:50,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:16:50,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:16:50,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:16:50,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:16:50,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:16:50,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:16:50,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:16:50,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:16:50,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:16:50,300 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_6020c605-5711-4829-b2e4-580e63b6fa5e/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 -> 52fb212ec99341e6f9f48006fcd8fa26d0c18e53 [2019-11-26 02:16:50,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:16:50,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:16:50,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:16:50,450 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:16:50,450 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:16:50,451 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2019-11-26 02:16:50,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/data/4436756e3/f8c783635066426bb5ea485e4302daf5/FLAG075225a6b [2019-11-26 02:16:51,013 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:16:51,014 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2019-11-26 02:16:51,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/data/4436756e3/f8c783635066426bb5ea485e4302daf5/FLAG075225a6b [2019-11-26 02:16:51,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/data/4436756e3/f8c783635066426bb5ea485e4302daf5 [2019-11-26 02:16:51,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:16:51,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:16:51,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:16:51,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:16:51,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:16:51,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:16:51" (1/1) ... [2019-11-26 02:16:51,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415c8882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:51, skipping insertion in model container [2019-11-26 02:16:51,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:16:51" (1/1) ... [2019-11-26 02:16:51,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:16:51,537 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:16:51,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:16:51,916 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:16:51,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:16:52,027 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:16:52,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52 WrapperNode [2019-11-26 02:16:52,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:16:52,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:16:52,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:16:52,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:16:52,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:16:52,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:16:52,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:16:52,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:16:52,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... [2019-11-26 02:16:52,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:16:52,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:16:52,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:16:52,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:16:52,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/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 02:16:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:16:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:16:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:16:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:16:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:16:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:16:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:16:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:16:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:16:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:16:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:16:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:16:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:16:52,169 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 02:16:52,503 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:16:52,504 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:16:52,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:52 BoogieIcfgContainer [2019-11-26 02:16:52,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:16:52,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:16:52,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:16:52,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:16:52,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:16:51" (1/3) ... [2019-11-26 02:16:52,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:16:52, skipping insertion in model container [2019-11-26 02:16:52,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:16:52" (2/3) ... [2019-11-26 02:16:52,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:16:52, skipping insertion in model container [2019-11-26 02:16:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:52" (3/3) ... [2019-11-26 02:16:52,511 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2019-11-26 02:16:52,556 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,556 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,557 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,557 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,557 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,557 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,558 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,558 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,558 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,558 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,559 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,559 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,559 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,559 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,559 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,560 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,560 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,560 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,560 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,561 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,561 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,561 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,561 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,562 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,562 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,562 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,562 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,562 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,563 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,563 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,563 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,563 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,564 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,564 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,564 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,564 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,565 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,565 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,565 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,565 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,565 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,566 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,566 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,566 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,566 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,566 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,567 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,568 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,568 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,568 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:16:52,592 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:16:52,592 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:16:52,599 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:16:52,609 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:16:52,626 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:16:52,626 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:16:52,626 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:16:52,626 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:16:52,626 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:16:52,626 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:16:52,626 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:16:52,627 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:16:52,636 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 76 transitions [2019-11-26 02:16:52,775 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1249 states. [2019-11-26 02:16:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states. [2019-11-26 02:16:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:16:52,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:52,791 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 02:16:52,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 559393765, now seen corresponding path program 1 times [2019-11-26 02:16:52,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:52,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991132616] [2019-11-26 02:16:52,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:53,128 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 02:16:53,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991132616] [2019-11-26 02:16:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:16:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291537462] [2019-11-26 02:16:53,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:16:53,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:53,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:16:53,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:16:53,150 INFO L87 Difference]: Start difference. First operand 1249 states. Second operand 4 states. [2019-11-26 02:16:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:53,341 INFO L93 Difference]: Finished difference Result 1296 states and 3962 transitions. [2019-11-26 02:16:53,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:16:53,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-26 02:16:53,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:53,364 INFO L225 Difference]: With dead ends: 1296 [2019-11-26 02:16:53,364 INFO L226 Difference]: Without dead ends: 602 [2019-11-26 02:16:53,366 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 02:16:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-26 02:16:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-26 02:16:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-26 02:16:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1777 transitions. [2019-11-26 02:16:53,472 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1777 transitions. Word has length 32 [2019-11-26 02:16:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:53,472 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 1777 transitions. [2019-11-26 02:16:53,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:16:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1777 transitions. [2019-11-26 02:16:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:16:53,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:53,476 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 02:16:53,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1314704853, now seen corresponding path program 1 times [2019-11-26 02:16:53,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:53,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372814128] [2019-11-26 02:16:53,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:53,612 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 02:16:53,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372814128] [2019-11-26 02:16:53,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:53,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:16:53,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316899494] [2019-11-26 02:16:53,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:16:53,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:53,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:16:53,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:16:53,615 INFO L87 Difference]: Start difference. First operand 602 states and 1777 transitions. Second operand 5 states. [2019-11-26 02:16:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:53,694 INFO L93 Difference]: Finished difference Result 602 states and 1696 transitions. [2019-11-26 02:16:53,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:16:53,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-11-26 02:16:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:53,701 INFO L225 Difference]: With dead ends: 602 [2019-11-26 02:16:53,701 INFO L226 Difference]: Without dead ends: 539 [2019-11-26 02:16:53,702 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 02:16:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-11-26 02:16:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2019-11-26 02:16:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-11-26 02:16:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1546 transitions. [2019-11-26 02:16:53,744 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1546 transitions. Word has length 33 [2019-11-26 02:16:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:53,744 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 1546 transitions. [2019-11-26 02:16:53,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:16:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1546 transitions. [2019-11-26 02:16:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-26 02:16:53,747 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:53,748 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 02:16:53,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:53,748 INFO L82 PathProgramCache]: Analyzing trace with hash 25826823, now seen corresponding path program 1 times [2019-11-26 02:16:53,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:53,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747322689] [2019-11-26 02:16:53,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:53,874 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 02:16:53,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747322689] [2019-11-26 02:16:53,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:53,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:16:53,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530069791] [2019-11-26 02:16:53,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:16:53,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:53,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:16:53,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:16:53,876 INFO L87 Difference]: Start difference. First operand 539 states and 1546 transitions. Second operand 6 states. [2019-11-26 02:16:54,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:54,000 INFO L93 Difference]: Finished difference Result 404 states and 1060 transitions. [2019-11-26 02:16:54,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:16:54,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-26 02:16:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:54,004 INFO L225 Difference]: With dead ends: 404 [2019-11-26 02:16:54,005 INFO L226 Difference]: Without dead ends: 350 [2019-11-26 02:16:54,005 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 02:16:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-11-26 02:16:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2019-11-26 02:16:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2019-11-26 02:16:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 916 transitions. [2019-11-26 02:16:54,031 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 916 transitions. Word has length 34 [2019-11-26 02:16:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:54,031 INFO L462 AbstractCegarLoop]: Abstraction has 350 states and 916 transitions. [2019-11-26 02:16:54,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:16:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 916 transitions. [2019-11-26 02:16:54,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-26 02:16:54,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:54,036 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, 1] [2019-11-26 02:16:54,036 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:54,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:54,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1153353435, now seen corresponding path program 1 times [2019-11-26 02:16:54,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:54,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721246877] [2019-11-26 02:16:54,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:54,229 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 02:16:54,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721246877] [2019-11-26 02:16:54,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:54,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:16:54,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632796300] [2019-11-26 02:16:54,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:16:54,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:16:54,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:16:54,231 INFO L87 Difference]: Start difference. First operand 350 states and 916 transitions. Second operand 7 states. [2019-11-26 02:16:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:54,396 INFO L93 Difference]: Finished difference Result 521 states and 1396 transitions. [2019-11-26 02:16:54,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:16:54,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-26 02:16:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:54,400 INFO L225 Difference]: With dead ends: 521 [2019-11-26 02:16:54,400 INFO L226 Difference]: Without dead ends: 350 [2019-11-26 02:16:54,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:16:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-11-26 02:16:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2019-11-26 02:16:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-11-26 02:16:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 889 transitions. [2019-11-26 02:16:54,415 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 889 transitions. Word has length 35 [2019-11-26 02:16:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:54,415 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 889 transitions. [2019-11-26 02:16:54,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:16:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 889 transitions. [2019-11-26 02:16:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-26 02:16:54,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:54,421 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, 1] [2019-11-26 02:16:54,421 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash 980105743, now seen corresponding path program 2 times [2019-11-26 02:16:54,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:54,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679921622] [2019-11-26 02:16:54,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:54,612 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 02:16:54,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679921622] [2019-11-26 02:16:54,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:54,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:16:54,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137620877] [2019-11-26 02:16:54,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:16:54,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:16:54,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:16:54,614 INFO L87 Difference]: Start difference. First operand 341 states and 889 transitions. Second operand 7 states. [2019-11-26 02:16:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:54,792 INFO L93 Difference]: Finished difference Result 503 states and 1348 transitions. [2019-11-26 02:16:54,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:16:54,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-26 02:16:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:54,795 INFO L225 Difference]: With dead ends: 503 [2019-11-26 02:16:54,795 INFO L226 Difference]: Without dead ends: 269 [2019-11-26 02:16:54,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:16:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-11-26 02:16:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2019-11-26 02:16:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-11-26 02:16:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 703 transitions. [2019-11-26 02:16:54,805 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 703 transitions. Word has length 35 [2019-11-26 02:16:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:54,806 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 703 transitions. [2019-11-26 02:16:54,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:16:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 703 transitions. [2019-11-26 02:16:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-26 02:16:54,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:54,808 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, 1] [2019-11-26 02:16:54,808 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2125873661, now seen corresponding path program 3 times [2019-11-26 02:16:54,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:54,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584006913] [2019-11-26 02:16:54,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:54,939 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 02:16:54,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584006913] [2019-11-26 02:16:54,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:54,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:16:54,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992023618] [2019-11-26 02:16:54,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:16:54,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:54,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:16:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:16:54,941 INFO L87 Difference]: Start difference. First operand 269 states and 703 transitions. Second operand 8 states. [2019-11-26 02:16:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:55,051 INFO L93 Difference]: Finished difference Result 440 states and 1183 transitions. [2019-11-26 02:16:55,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:16:55,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-26 02:16:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:55,054 INFO L225 Difference]: With dead ends: 440 [2019-11-26 02:16:55,054 INFO L226 Difference]: Without dead ends: 266 [2019-11-26 02:16:55,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:16:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2019-11-26 02:16:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2019-11-26 02:16:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-11-26 02:16:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 697 transitions. [2019-11-26 02:16:55,065 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 697 transitions. Word has length 35 [2019-11-26 02:16:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:55,066 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 697 transitions. [2019-11-26 02:16:55,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:16:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 697 transitions. [2019-11-26 02:16:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-26 02:16:55,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:16:55,067 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, 1] [2019-11-26 02:16:55,067 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:16:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:16:55,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1093382479, now seen corresponding path program 4 times [2019-11-26 02:16:55,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:16:55,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798510160] [2019-11-26 02:16:55,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:16:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:16:55,181 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 02:16:55,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798510160] [2019-11-26 02:16:55,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:16:55,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:16:55,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158523879] [2019-11-26 02:16:55,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:16:55,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:16:55,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:16:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:16:55,183 INFO L87 Difference]: Start difference. First operand 266 states and 697 transitions. Second operand 7 states. [2019-11-26 02:16:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:16:55,297 INFO L93 Difference]: Finished difference Result 212 states and 535 transitions. [2019-11-26 02:16:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:16:55,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-26 02:16:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:16:55,298 INFO L225 Difference]: With dead ends: 212 [2019-11-26 02:16:55,298 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:16:55,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:16:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:16:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:16:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:16:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:16:55,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-26 02:16:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:16:55,300 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:16:55,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:16:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:16:55,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:16:55,303 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:16:55,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:16:55 BasicIcfg [2019-11-26 02:16:55,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:16:55,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:16:55,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:16:55,305 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:16:55,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:16:52" (3/4) ... [2019-11-26 02:16:55,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:16:55,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:16:55,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:16:55,319 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:16:55,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:16:55,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:16:55,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:16:55,366 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6020c605-5711-4829-b2e4-580e63b6fa5e/bin/utaipan/witness.graphml [2019-11-26 02:16:55,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:16:55,368 INFO L168 Benchmark]: Toolchain (without parser) took 3894.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -94.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:55,369 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:16:55,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:55,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 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 02:16:55,370 INFO L168 Benchmark]: Boogie Preprocessor took 24.41 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 02:16:55,380 INFO L168 Benchmark]: RCFGBuilder took 409.28 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 02:16:55,381 INFO L168 Benchmark]: TraceAbstraction took 2799.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:55,381 INFO L168 Benchmark]: Witness Printer took 61.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:16:55,384 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 554.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -160.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.08 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 24.41 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 409.28 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 2799.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. * Witness Printer took 61.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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, 91 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 381 SDtfs, 411 SDslu, 1126 SDs, 0 SdLazy, 147 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 21714 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...