./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60a7ff3f23a200182bd6aab1491430b4bfb2dbb8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:28:27,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:28:27,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:28:27,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:28:27,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:28:27,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:28:27,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:28:27,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:28:27,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:28:27,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:28:27,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:28:27,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:28:27,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:28:27,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:28:27,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:28:27,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:28:27,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:28:27,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:28:27,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:28:27,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:28:27,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:28:27,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:28:27,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:28:27,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:28:27,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:28:27,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:28:27,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:28:27,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:28:27,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:28:27,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:28:27,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:28:27,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:28:27,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:28:27,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:28:27,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:28:27,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:28:27,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:28:27,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:28:27,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:28:27,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:28:27,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:28:27,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:28:27,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:28:27,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:28:27,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:28:27,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:28:27,455 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:28:27,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:28:27,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:28:27,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:28:27,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:28:27,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:28:27,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:28:27,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:28:27,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:28:27,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:28:27,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:28:27,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:28:27,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:28:27,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:28:27,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:28:27,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:28:27,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:28:27,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:28:27,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:28:27,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:28:27,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:28:27,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:28:27,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:28:27,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:28:27,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:28:27,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 -> 60a7ff3f23a200182bd6aab1491430b4bfb2dbb8 [2019-11-28 18:28:27,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:28:27,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:28:27,769 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:28:27,771 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:28:27,772 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:28:27,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2019-11-28 18:28:27,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e7a456/cd2ee15452ef45b2a0f33864e24a4fd0/FLAGa8e42e606 [2019-11-28 18:28:28,344 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:28:28,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2019-11-28 18:28:28,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e7a456/cd2ee15452ef45b2a0f33864e24a4fd0/FLAGa8e42e606 [2019-11-28 18:28:28,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559e7a456/cd2ee15452ef45b2a0f33864e24a4fd0 [2019-11-28 18:28:28,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:28:28,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:28:28,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:28,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:28:28,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:28:28,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:28" (1/1) ... [2019-11-28 18:28:28,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcf301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:28, skipping insertion in model container [2019-11-28 18:28:28,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:28:28" (1/1) ... [2019-11-28 18:28:28,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:28:28,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:28:29,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:29,187 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:28:29,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:28:29,332 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:28:29,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29 WrapperNode [2019-11-28 18:28:29,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:28:29,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:29,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:28:29,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:28:29,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:28:29,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:28:29,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:28:29,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:28:29,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... [2019-11-28 18:28:29,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:28:29,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:28:29,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:28:29,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:28:29,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 18:28:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:28:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:28:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:28:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:28:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:28:29,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:28:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:28:29,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:28:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:28:29,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:28:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:28:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:28:29,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:28:29,480 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:28:29,961 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:28:29,962 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:28:29,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:29 BoogieIcfgContainer [2019-11-28 18:28:29,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:28:29,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:28:29,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:28:29,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:28:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:28:28" (1/3) ... [2019-11-28 18:28:29,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:29, skipping insertion in model container [2019-11-28 18:28:29,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:28:29" (2/3) ... [2019-11-28 18:28:29,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:28:29, skipping insertion in model container [2019-11-28 18:28:29,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:29" (3/3) ... [2019-11-28 18:28:29,972 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2019-11-28 18:28:29,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:28:29,983 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:28:29,990 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:28:29,992 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:28:30,019 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,019 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,020 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,020 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,020 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,021 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,021 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,021 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,021 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,021 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,022 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,022 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,022 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,023 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,023 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,023 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,024 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,024 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:28:30,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 18:28:30,070 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:28:30,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:28:30,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:28:30,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:28:30,071 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:28:30,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:28:30,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:28:30,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:28:30,086 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-11-28 18:28:30,088 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:28:30,130 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:28:30,131 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:30,138 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:28:30,141 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-11-28 18:28:30,164 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-11-28 18:28:30,165 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:28:30,167 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-11-28 18:28:30,170 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-11-28 18:28:30,172 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:28:31,419 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-28 18:28:31,736 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-28 18:28:31,752 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-11-28 18:28:31,753 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2019-11-28 18:28:31,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-11-28 18:28:31,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-11-28 18:28:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-28 18:28:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:28:31,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:31,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:31,781 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:31,788 INFO L82 PathProgramCache]: Analyzing trace with hash -196435608, now seen corresponding path program 1 times [2019-11-28 18:28:31,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:31,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024536934] [2019-11-28 18:28:31,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:28:32,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024536934] [2019-11-28 18:28:32,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:32,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:28:32,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184360783] [2019-11-28 18:28:32,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:28:32,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:28:32,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:32,171 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-11-28 18:28:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:32,244 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-11-28 18:28:32,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:32,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:28:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:32,279 INFO L225 Difference]: With dead ends: 51 [2019-11-28 18:28:32,280 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 18:28:32,281 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:28:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 18:28:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 18:28:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 18:28:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-11-28 18:28:32,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-11-28 18:28:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:32,334 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-11-28 18:28:32,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:28:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-11-28 18:28:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 18:28:32,335 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:32,335 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:32,335 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:32,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1074136562, now seen corresponding path program 1 times [2019-11-28 18:28:32,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:32,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479074763] [2019-11-28 18:28:32,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:28:32,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479074763] [2019-11-28 18:28:32,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:32,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:28:32,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736904308] [2019-11-28 18:28:32,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:28:32,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:28:32,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:32,513 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-11-28 18:28:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:32,527 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2019-11-28 18:28:32,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:32,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 18:28:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:32,528 INFO L225 Difference]: With dead ends: 35 [2019-11-28 18:28:32,529 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 18:28:32,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 18:28:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-28 18:28:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-28 18:28:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-11-28 18:28:32,534 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 9 [2019-11-28 18:28:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:32,534 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-28 18:28:32,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:28:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-11-28 18:28:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:28:32,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:32,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:32,536 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash 206758562, now seen corresponding path program 1 times [2019-11-28 18:28:32,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:32,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650240614] [2019-11-28 18:28:32,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:28:32,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650240614] [2019-11-28 18:28:32,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:32,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:28:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925952657] [2019-11-28 18:28:32,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:28:32,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:28:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:28:32,671 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 6 states. [2019-11-28 18:28:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:32,760 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-11-28 18:28:32,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:28:32,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 18:28:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:32,761 INFO L225 Difference]: With dead ends: 21 [2019-11-28 18:28:32,761 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 18:28:32,762 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:28:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 18:28:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 18:28:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 18:28:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-28 18:28:32,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-11-28 18:28:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:32,766 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-28 18:28:32,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:28:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-28 18:28:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:28:32,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:32,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:32,767 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1297271908, now seen corresponding path program 1 times [2019-11-28 18:28:32,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:32,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004011682] [2019-11-28 18:28:32,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:28:32,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004011682] [2019-11-28 18:28:32,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:32,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:28:32,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189788963] [2019-11-28 18:28:32,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:28:32,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:32,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:28:32,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:32,871 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-28 18:28:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:32,896 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-28 18:28:32,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:32,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:28:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:32,898 INFO L225 Difference]: With dead ends: 18 [2019-11-28 18:28:32,898 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 18:28:32,900 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:28:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 18:28:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 18:28:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 18:28:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-28 18:28:32,903 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-11-28 18:28:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:32,903 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-28 18:28:32,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:28:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-28 18:28:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:28:32,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:28:32,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:28:32,906 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:28:32,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:28:32,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2114632488, now seen corresponding path program 2 times [2019-11-28 18:28:32,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:28:32,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182019309] [2019-11-28 18:28:32,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:28:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:28:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:28:33,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182019309] [2019-11-28 18:28:33,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:28:33,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:28:33,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034566300] [2019-11-28 18:28:33,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:28:33,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:28:33,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:28:33,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:28:33,020 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-11-28 18:28:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:28:33,042 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-28 18:28:33,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:28:33,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 18:28:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:28:33,043 INFO L225 Difference]: With dead ends: 11 [2019-11-28 18:28:33,043 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:28:33,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:28:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:28:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:28:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:28:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:28:33,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 18:28:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:28:33,046 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:28:33,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:28:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:28:33,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:28:33,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:28:33 BasicIcfg [2019-11-28 18:28:33,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:28:33,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:28:33,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:28:33,055 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:28:33,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:28:29" (3/4) ... [2019-11-28 18:28:33,064 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:28:33,072 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:28:33,072 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:28:33,072 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:28:33,077 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 18:28:33,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:28:33,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:28:33,149 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:28:33,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:28:33,151 INFO L168 Benchmark]: Toolchain (without parser) took 4526.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.5 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -255.8 MB). Peak memory consumption was 288.5 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:33,152 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:28:33,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:33,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.36 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. [2019-11-28 18:28:33,156 INFO L168 Benchmark]: Boogie Preprocessor took 29.25 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. [2019-11-28 18:28:33,157 INFO L168 Benchmark]: RCFGBuilder took 549.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:33,160 INFO L168 Benchmark]: TraceAbstraction took 3090.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 816.7 MB in the end (delta: 269.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:33,162 INFO L168 Benchmark]: Witness Printer took 94.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 816.7 MB in the beginning and 1.2 GB in the end (delta: -388.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-11-28 18:28:33,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 706.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.36 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 29.25 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 549.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3090.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 816.7 MB in the end (delta: 269.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. * Witness Printer took 94.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 816.7 MB in the beginning and 1.2 GB in the end (delta: -388.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 229 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 46 TotalNumberOfCompositions - 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 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 46 SDslu, 37 SDs, 0 SdLazy, 40 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...