./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/15_dekker.i -s /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/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-cad4683 [2019-10-22 09:02:31,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:31,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:31,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:31,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:31,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:31,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:31,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:31,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:31,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:31,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:31,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:31,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:31,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:31,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:31,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:31,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:31,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:31,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:31,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:31,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:31,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:31,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:31,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:31,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:31,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:31,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:31,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:31,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:31,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:31,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:31,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:31,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:31,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:31,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:31,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:31,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:31,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:31,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:31,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:31,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:31,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:31,520 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:31,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:31,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:31,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:31,522 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:31,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:31,522 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:31,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:31,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:31,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:31,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:31,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:31,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:31,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:31,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:31,524 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:31,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:31,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:31,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:31,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:31,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:31,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:31,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:31,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:31,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:31,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:31,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:31,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:31,526 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/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/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 [2019-10-22 09:02:31,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:31,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:31,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:31,565 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:31,565 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:31,566 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/15_dekker.i [2019-10-22 09:02:31,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/data/b724b51fd/3a45a6036e544fe7a8e5d7f0c784bbb4/FLAG8a4123643 [2019-10-22 09:02:32,050 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:32,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/sv-benchmarks/c/pthread-ext/15_dekker.i [2019-10-22 09:02:32,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/data/b724b51fd/3a45a6036e544fe7a8e5d7f0c784bbb4/FLAG8a4123643 [2019-10-22 09:02:32,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/data/b724b51fd/3a45a6036e544fe7a8e5d7f0c784bbb4 [2019-10-22 09:02:32,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:32,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:32,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:32,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:32,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:32,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:32" (1/1) ... [2019-10-22 09:02:32,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b307b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:32, skipping insertion in model container [2019-10-22 09:02:32,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:32" (1/1) ... [2019-10-22 09:02:32,436 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:32,478 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:32,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:32,914 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:32,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:33,011 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:33,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33 WrapperNode [2019-10-22 09:02:33,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:33,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:33,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:33,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:33,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:33,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:33,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:33,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:33,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... [2019-10-22 09:02:33,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:33,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:33,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:33,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:33,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/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 [2019-10-22 09:02:33,138 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 09:02:33,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 09:02:33,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:33,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:02:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:33,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:33,140 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 09:02:33,378 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:33,378 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-22 09:02:33,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:33 BoogieIcfgContainer [2019-10-22 09:02:33,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:33,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:33,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:33,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:33,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:32" (1/3) ... [2019-10-22 09:02:33,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69918c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:33, skipping insertion in model container [2019-10-22 09:02:33,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:33" (2/3) ... [2019-10-22 09:02:33,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69918c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:33, skipping insertion in model container [2019-10-22 09:02:33,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:33" (3/3) ... [2019-10-22 09:02:33,387 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-10-22 09:02:33,426 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,428 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,428 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,428 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,429 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,429 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:33,445 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 09:02:33,445 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:33,454 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 09:02:33,468 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 09:02:33,488 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:33,488 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:33,489 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:33,489 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:33,489 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:33,489 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:33,489 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:33,489 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:33,499 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 63 transitions [2019-10-22 09:02:33,545 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 427 states. [2019-10-22 09:02:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2019-10-22 09:02:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:33,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:33,564 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:33,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2064580241, now seen corresponding path program 1 times [2019-10-22 09:02:33,580 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:33,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325370475] [2019-10-22 09:02:33,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:33,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325370475] [2019-10-22 09:02:33,721 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:33,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:33,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532509124] [2019-10-22 09:02:33,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:02:33,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:33,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:02:33,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:02:33,740 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 2 states. [2019-10-22 09:02:33,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:33,770 INFO L93 Difference]: Finished difference Result 427 states and 927 transitions. [2019-10-22 09:02:33,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:02:33,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-22 09:02:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:33,785 INFO L225 Difference]: With dead ends: 427 [2019-10-22 09:02:33,785 INFO L226 Difference]: Without dead ends: 372 [2019-10-22 09:02:33,787 INFO L600 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 [2019-10-22 09:02:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-10-22 09:02:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2019-10-22 09:02:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-22 09:02:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 817 transitions. [2019-10-22 09:02:33,855 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 817 transitions. Word has length 17 [2019-10-22 09:02:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:33,855 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 817 transitions. [2019-10-22 09:02:33,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:02:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 817 transitions. [2019-10-22 09:02:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:33,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:33,856 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:33,857 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:33,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2064610032, now seen corresponding path program 1 times [2019-10-22 09:02:33,857 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:33,857 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440200205] [2019-10-22 09:02:33,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:33,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440200205] [2019-10-22 09:02:33,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:33,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:33,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059124264] [2019-10-22 09:02:33,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:33,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:33,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:33,927 INFO L87 Difference]: Start difference. First operand 372 states and 817 transitions. Second operand 3 states. [2019-10-22 09:02:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:33,954 INFO L93 Difference]: Finished difference Result 377 states and 800 transitions. [2019-10-22 09:02:33,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:33,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 09:02:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:33,956 INFO L225 Difference]: With dead ends: 377 [2019-10-22 09:02:33,956 INFO L226 Difference]: Without dead ends: 278 [2019-10-22 09:02:33,957 INFO L600 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 [2019-10-22 09:02:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-22 09:02:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2019-10-22 09:02:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2019-10-22 09:02:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 559 transitions. [2019-10-22 09:02:33,970 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 559 transitions. Word has length 17 [2019-10-22 09:02:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:33,970 INFO L462 AbstractCegarLoop]: Abstraction has 263 states and 559 transitions. [2019-10-22 09:02:33,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 559 transitions. [2019-10-22 09:02:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:02:33,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:33,972 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:33,972 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -286313806, now seen corresponding path program 1 times [2019-10-22 09:02:33,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:33,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008190914] [2019-10-22 09:02:33,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:33,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008190914] [2019-10-22 09:02:34,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:34,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:34,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70754839] [2019-10-22 09:02:34,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:34,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:34,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:34,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:34,022 INFO L87 Difference]: Start difference. First operand 263 states and 559 transitions. Second operand 3 states. [2019-10-22 09:02:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:34,039 INFO L93 Difference]: Finished difference Result 246 states and 512 transitions. [2019-10-22 09:02:34,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:34,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-22 09:02:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:34,041 INFO L225 Difference]: With dead ends: 246 [2019-10-22 09:02:34,042 INFO L226 Difference]: Without dead ends: 181 [2019-10-22 09:02:34,042 INFO L600 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 [2019-10-22 09:02:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-22 09:02:34,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2019-10-22 09:02:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-10-22 09:02:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 373 transitions. [2019-10-22 09:02:34,050 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 373 transitions. Word has length 21 [2019-10-22 09:02:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:34,050 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 373 transitions. [2019-10-22 09:02:34,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 373 transitions. [2019-10-22 09:02:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:34,052 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:34,052 INFO L380 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] [2019-10-22 09:02:34,052 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1890089302, now seen corresponding path program 1 times [2019-10-22 09:02:34,053 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:34,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856166505] [2019-10-22 09:02:34,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856166505] [2019-10-22 09:02:34,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:34,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:34,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203859452] [2019-10-22 09:02:34,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:34,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:34,116 INFO L87 Difference]: Start difference. First operand 181 states and 373 transitions. Second operand 3 states. [2019-10-22 09:02:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:34,129 INFO L93 Difference]: Finished difference Result 181 states and 368 transitions. [2019-10-22 09:02:34,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:34,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 09:02:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:34,131 INFO L225 Difference]: With dead ends: 181 [2019-10-22 09:02:34,131 INFO L226 Difference]: Without dead ends: 159 [2019-10-22 09:02:34,132 INFO L600 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 [2019-10-22 09:02:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-10-22 09:02:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-10-22 09:02:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 09:02:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 320 transitions. [2019-10-22 09:02:34,138 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 320 transitions. Word has length 25 [2019-10-22 09:02:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:34,139 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 320 transitions. [2019-10-22 09:02:34,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 320 transitions. [2019-10-22 09:02:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:34,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:34,140 INFO L380 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] [2019-10-22 09:02:34,140 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1004684685, now seen corresponding path program 1 times [2019-10-22 09:02:34,141 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:34,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950808781] [2019-10-22 09:02:34,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:34,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:34,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950808781] [2019-10-22 09:02:34,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:34,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:34,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064955731] [2019-10-22 09:02:34,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:34,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:34,171 INFO L87 Difference]: Start difference. First operand 159 states and 320 transitions. Second operand 3 states. [2019-10-22 09:02:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:34,182 INFO L93 Difference]: Finished difference Result 102 states and 230 transitions. [2019-10-22 09:02:34,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:34,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 09:02:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:34,183 INFO L225 Difference]: With dead ends: 102 [2019-10-22 09:02:34,184 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:02:34,184 INFO L600 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 [2019-10-22 09:02:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:02:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:02:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:02:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:02:34,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-22 09:02:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:34,185 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:34,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:34,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:02:34,188 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 09:02:34,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:34 BasicIcfg [2019-10-22 09:02:34,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:34,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:34,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:34,190 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:34,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:33" (3/4) ... [2019-10-22 09:02:34,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:02:34,201 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 09:02:34,204 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 09:02:34,205 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:02:34,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_acb33675-33ec-499a-9c98-e8cf0d932206/bin/uautomizer/witness.graphml [2019-10-22 09:02:34,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:34,240 INFO L168 Benchmark]: Toolchain (without parser) took 1818.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.1 MB in the beginning and 1.0 GB in the end (delta: -88.9 MB). Peak memory consumption was 63.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,241 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:34,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.00 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,251 INFO L168 Benchmark]: Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,251 INFO L168 Benchmark]: RCFGBuilder took 303.64 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,252 INFO L168 Benchmark]: TraceAbstraction took 809.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,252 INFO L168 Benchmark]: Witness Printer took 47.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:34,254 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 590.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.00 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 303.64 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 809.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. * Witness Printer took 47.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. 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: 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 3 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 307 SDtfs, 113 SDslu, 125 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=427occurred 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2712 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...