./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/15_dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/15_dekker.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer --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 316c62654735ab7f9412d0ff424f710640d92e79 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:51:09,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:51:09,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:51:09,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:51:09,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:51:09,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:51:09,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:51:09,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:51:09,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:51:09,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:51:09,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:51:09,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:51:09,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:51:09,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:51:09,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:51:09,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:51:09,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:51:09,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:51:09,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:51:09,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:51:09,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:51:09,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:51:09,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:51:09,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:51:09,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:51:09,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:51:09,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:51:09,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:51:09,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:51:09,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:51:09,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:51:09,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:51:09,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:51:09,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:51:09,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:51:09,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:51:09,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:51:09,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:51:09,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:51:09,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:51:09,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:51:09,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:51:09,497 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:51:09,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:51:09,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:51:09,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:51:09,499 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:51:09,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:51:09,500 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:51:09,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:51:09,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:51:09,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:51:09,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:51:09,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:51:09,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:51:09,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:51:09,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:51:09,501 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:51:09,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:51:09,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:51:09,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:51:09,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:51:09,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:51:09,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:51:09,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:51:09,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:51:09,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:51:09,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:51:09,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:51:09,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:51:09,504 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer 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 -> 316c62654735ab7f9412d0ff424f710640d92e79 [2019-11-19 22:51:09,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:51:09,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:51:09,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:51:09,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:51:09,658 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:51:09,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-19 22:51:09,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/data/5aac8b96b/1cf399c81d53438d8b6f7b5a6c221ea7/FLAG1a5febe21 [2019-11-19 22:51:10,256 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:51:10,257 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-19 22:51:10,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/data/5aac8b96b/1cf399c81d53438d8b6f7b5a6c221ea7/FLAG1a5febe21 [2019-11-19 22:51:10,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/data/5aac8b96b/1cf399c81d53438d8b6f7b5a6c221ea7 [2019-11-19 22:51:10,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:51:10,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:51:10,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:51:10,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:51:10,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:51:10,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:51:10" (1/1) ... [2019-11-19 22:51:10,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707d5de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:10, skipping insertion in model container [2019-11-19 22:51:10,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:51:10" (1/1) ... [2019-11-19 22:51:10,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:51:10,799 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:51:11,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:51:11,203 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:51:11,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:51:11,338 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:51:11,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11 WrapperNode [2019-11-19 22:51:11,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:51:11,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:51:11,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:51:11,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:51:11,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:51:11,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:51:11,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:51:11,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:51:11,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... [2019-11-19 22:51:11,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:51:11,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:51:11,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:51:11,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:51:11,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/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 [2019-11-19 22:51:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-19 22:51:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-19 22:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 22:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:51:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:51:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:51:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:51:11,524 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-19 22:51:11,969 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:51:11,969 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-19 22:51:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:51:11 BoogieIcfgContainer [2019-11-19 22:51:11,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:51:11,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:51:11,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:51:11,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:51:11,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:51:10" (1/3) ... [2019-11-19 22:51:11,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3c54b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:51:11, skipping insertion in model container [2019-11-19 22:51:11,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:11" (2/3) ... [2019-11-19 22:51:11,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3c54b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:51:11, skipping insertion in model container [2019-11-19 22:51:11,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:51:11" (3/3) ... [2019-11-19 22:51:11,987 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-11-19 22:51:12,024 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,025 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,025 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,026 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,027 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,027 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,028 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,029 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,029 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,029 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,032 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,033 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,033 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,034 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:51:12,043 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 22:51:12,044 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:51:12,051 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-19 22:51:12,061 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-19 22:51:12,078 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:51:12,079 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:51:12,079 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:51:12,079 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:51:12,079 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:51:12,079 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:51:12,079 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:51:12,079 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:51:12,090 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 108 transitions [2019-11-19 22:51:12,191 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1260 states. [2019-11-19 22:51:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states. [2019-11-19 22:51:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 22:51:12,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:51:12,203 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:51:12,204 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:51:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:51:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash -20240147, now seen corresponding path program 1 times [2019-11-19 22:51:12,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:51:12,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475783232] [2019-11-19 22:51:12,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:51:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:51:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:51:12,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475783232] [2019-11-19 22:51:12,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:51:12,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:51:12,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824860952] [2019-11-19 22:51:12,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 22:51:12,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:51:12,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 22:51:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 22:51:12,386 INFO L87 Difference]: Start difference. First operand 1260 states. Second operand 2 states. [2019-11-19 22:51:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:51:12,439 INFO L93 Difference]: Finished difference Result 1260 states and 2762 transitions. [2019-11-19 22:51:12,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 22:51:12,441 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-19 22:51:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:51:12,472 INFO L225 Difference]: With dead ends: 1260 [2019-11-19 22:51:12,472 INFO L226 Difference]: Without dead ends: 1095 [2019-11-19 22:51:12,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 22:51:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2019-11-19 22:51:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1095. [2019-11-19 22:51:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-11-19 22:51:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2432 transitions. [2019-11-19 22:51:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2432 transitions. Word has length 18 [2019-11-19 22:51:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:51:12,607 INFO L462 AbstractCegarLoop]: Abstraction has 1095 states and 2432 transitions. [2019-11-19 22:51:12,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 22:51:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2432 transitions. [2019-11-19 22:51:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 22:51:12,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:51:12,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:51:12,609 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:51:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:51:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash -20210356, now seen corresponding path program 1 times [2019-11-19 22:51:12,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:51:12,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490981843] [2019-11-19 22:51:12,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:51:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:51:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:51:12,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490981843] [2019-11-19 22:51:12,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:51:12,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:51:12,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274505534] [2019-11-19 22:51:12,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:51:12,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:51:12,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:51:12,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:12,675 INFO L87 Difference]: Start difference. First operand 1095 states and 2432 transitions. Second operand 3 states. [2019-11-19 22:51:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:51:12,737 INFO L93 Difference]: Finished difference Result 1110 states and 2381 transitions. [2019-11-19 22:51:12,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:51:12,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-19 22:51:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:51:12,744 INFO L225 Difference]: With dead ends: 1110 [2019-11-19 22:51:12,744 INFO L226 Difference]: Without dead ends: 813 [2019-11-19 22:51:12,745 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-11-19 22:51:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 768. [2019-11-19 22:51:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-11-19 22:51:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1658 transitions. [2019-11-19 22:51:12,781 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1658 transitions. Word has length 18 [2019-11-19 22:51:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:51:12,781 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 1658 transitions. [2019-11-19 22:51:12,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:51:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1658 transitions. [2019-11-19 22:51:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 22:51:12,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:51:12,785 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] [2019-11-19 22:51:12,785 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:51:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:51:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1652523885, now seen corresponding path program 1 times [2019-11-19 22:51:12,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:51:12,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756136547] [2019-11-19 22:51:12,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:51:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:51:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:51:12,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756136547] [2019-11-19 22:51:12,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:51:12,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:51:12,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506481973] [2019-11-19 22:51:12,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:51:12,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:51:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:51:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:12,846 INFO L87 Difference]: Start difference. First operand 768 states and 1658 transitions. Second operand 3 states. [2019-11-19 22:51:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:51:12,911 INFO L93 Difference]: Finished difference Result 717 states and 1517 transitions. [2019-11-19 22:51:12,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:51:12,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-19 22:51:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:51:12,916 INFO L225 Difference]: With dead ends: 717 [2019-11-19 22:51:12,916 INFO L226 Difference]: Without dead ends: 522 [2019-11-19 22:51:12,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2019-11-19 22:51:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2019-11-19 22:51:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2019-11-19 22:51:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1100 transitions. [2019-11-19 22:51:12,934 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1100 transitions. Word has length 22 [2019-11-19 22:51:12,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:51:12,935 INFO L462 AbstractCegarLoop]: Abstraction has 522 states and 1100 transitions. [2019-11-19 22:51:12,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:51:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1100 transitions. [2019-11-19 22:51:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 22:51:12,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:51:12,938 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] [2019-11-19 22:51:12,938 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:51:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:51:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 987636625, now seen corresponding path program 1 times [2019-11-19 22:51:12,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:51:12,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261582201] [2019-11-19 22:51:12,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:51:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:51:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:51:12,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261582201] [2019-11-19 22:51:12,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:51:12,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:51:12,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808087618] [2019-11-19 22:51:12,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:51:12,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:51:12,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:51:12,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:12,985 INFO L87 Difference]: Start difference. First operand 522 states and 1100 transitions. Second operand 3 states. [2019-11-19 22:51:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:51:13,023 INFO L93 Difference]: Finished difference Result 522 states and 1085 transitions. [2019-11-19 22:51:13,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:51:13,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-19 22:51:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:51:13,028 INFO L225 Difference]: With dead ends: 522 [2019-11-19 22:51:13,028 INFO L226 Difference]: Without dead ends: 456 [2019-11-19 22:51:13,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-11-19 22:51:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2019-11-19 22:51:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-11-19 22:51:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 941 transitions. [2019-11-19 22:51:13,046 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 941 transitions. Word has length 26 [2019-11-19 22:51:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:51:13,047 INFO L462 AbstractCegarLoop]: Abstraction has 456 states and 941 transitions. [2019-11-19 22:51:13,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:51:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 941 transitions. [2019-11-19 22:51:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 22:51:13,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:51:13,049 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] [2019-11-19 22:51:13,050 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:51:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:51:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2020149898, now seen corresponding path program 1 times [2019-11-19 22:51:13,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:51:13,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519918381] [2019-11-19 22:51:13,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:51:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:51:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:51:13,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519918381] [2019-11-19 22:51:13,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:51:13,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:51:13,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569325881] [2019-11-19 22:51:13,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:51:13,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:51:13,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:51:13,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:13,127 INFO L87 Difference]: Start difference. First operand 456 states and 941 transitions. Second operand 3 states. [2019-11-19 22:51:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:51:13,203 INFO L93 Difference]: Finished difference Result 285 states and 671 transitions. [2019-11-19 22:51:13,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:51:13,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-19 22:51:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:51:13,205 INFO L225 Difference]: With dead ends: 285 [2019-11-19 22:51:13,205 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:51:13,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:51:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:51:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:51:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:51:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:51:13,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-19 22:51:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:51:13,206 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:51:13,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:51:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:51:13,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:51:13,215 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 22:51:13,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:51:13 BasicIcfg [2019-11-19 22:51:13,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:51:13,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:51:13,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:51:13,219 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:51:13,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:51:11" (3/4) ... [2019-11-19 22:51:13,224 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:51:13,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-19 22:51:13,248 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-19 22:51:13,260 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 22:51:13,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 22:51:13,311 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0836c13-a2f5-487f-b317-5556e9bc9c9b/bin/uautomizer/witness.graphml [2019-11-19 22:51:13,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:51:13,318 INFO L168 Benchmark]: Toolchain (without parser) took 2586.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 943.4 MB in the beginning and 991.7 MB in the end (delta: -48.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:51:13,318 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:51:13,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:51:13,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.07 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:51:13,321 INFO L168 Benchmark]: Boogie Preprocessor took 47.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:51:13,325 INFO L168 Benchmark]: RCFGBuilder took 522.80 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:51:13,326 INFO L168 Benchmark]: TraceAbstraction took 1247.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 991.7 MB in the end (delta: 112.8 MB). Peak memory consumption was 112.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:51:13,326 INFO L168 Benchmark]: Witness Printer took 97.23 ms. Allocated memory is still 1.2 GB. Free memory is still 991.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:51:13,328 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 608.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.07 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 522.80 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1247.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 991.7 MB in the end (delta: 112.8 MB). Peak memory consumption was 112.8 MB. Max. memory is 11.5 GB. * Witness Printer took 97.23 ms. Allocated memory is still 1.2 GB. Free memory is still 991.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 102 locations, 5 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 526 SDtfs, 217 SDslu, 219 SDs, 0 SdLazy, 46 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1260occurred 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, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745 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...