./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2014.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/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 f9585513ea3d4c8794f0f67c1732696b04d1d743 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:45:23,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:45:23,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:45:23,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:45:23,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:45:23,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:45:23,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:45:23,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:45:23,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:45:23,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:45:23,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:45:23,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:45:23,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:45:23,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:45:23,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:45:23,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:45:23,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:45:23,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:45:23,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:45:23,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:45:23,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:45:23,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:45:23,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:45:23,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:45:23,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:45:23,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:45:23,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:45:23,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:45:23,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:45:23,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:45:23,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:45:23,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:45:23,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:45:23,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:45:23,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:45:23,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:45:23,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:45:23,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:45:23,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:45:23,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:45:23,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:45:23,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:45:23,300 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:45:23,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:45:23,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:45:23,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:45:23,312 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:45:23,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:45:23,312 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:45:23,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:45:23,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:45:23,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:45:23,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:45:23,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:45:23,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:45:23,314 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:45:23,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:45:23,314 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:45:23,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:45:23,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:45:23,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:45:23,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:45:23,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:45:23,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:45:23,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:45:23,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:45:23,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:45:23,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:45:23,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:45:23,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:45:23,317 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_5a3d399d-6515-4b51-a5d0-5d3b427b379e/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 -> f9585513ea3d4c8794f0f67c1732696b04d1d743 [2019-11-25 08:45:23,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:45:23,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:45:23,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:45:23,499 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:45:23,499 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:45:23,500 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/../../sv-benchmarks/c/pthread-lit/fkp2014.i [2019-11-25 08:45:23,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/data/74f761b92/726748a7e6244cb18b56bac163310050/FLAG2338437f5 [2019-11-25 08:45:24,003 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:45:24,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/sv-benchmarks/c/pthread-lit/fkp2014.i [2019-11-25 08:45:24,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/data/74f761b92/726748a7e6244cb18b56bac163310050/FLAG2338437f5 [2019-11-25 08:45:24,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/data/74f761b92/726748a7e6244cb18b56bac163310050 [2019-11-25 08:45:24,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:45:24,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:45:24,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:24,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:45:24,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:45:24,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afdb59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24, skipping insertion in model container [2019-11-25 08:45:24,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:45:24,434 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:45:24,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:24,901 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:45:24,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:25,035 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:45:25,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25 WrapperNode [2019-11-25 08:45:25,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:25,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:45:25,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:45:25,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:45:25,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:45:25,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:45:25,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:45:25,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:45:25,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... [2019-11-25 08:45:25,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:45:25,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:45:25,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:45:25,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:45:25,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/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 [2019-11-25 08:45:25,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:45:25,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-25 08:45:25,157 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-11-25 08:45:25,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-11-25 08:45:25,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:45:25,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:45:25,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-25 08:45:25,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:45:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:45:25,159 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:45:25,537 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:45:25,537 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-25 08:45:25,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25 BoogieIcfgContainer [2019-11-25 08:45:25,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:45:25,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:45:25,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:45:25,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:45:25,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:45:24" (1/3) ... [2019-11-25 08:45:25,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443bd757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:25, skipping insertion in model container [2019-11-25 08:45:25,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:25" (2/3) ... [2019-11-25 08:45:25,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443bd757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:25, skipping insertion in model container [2019-11-25 08:45:25,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25" (3/3) ... [2019-11-25 08:45:25,550 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2019-11-25 08:45:25,601 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,603 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,603 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,603 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,604 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,604 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,605 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,605 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,605 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,605 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,606 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,606 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,606 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,606 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,607 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,608 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,608 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,608 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,609 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,609 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,609 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,613 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,614 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,614 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,615 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,615 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,616 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,616 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,617 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,617 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,617 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,617 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,618 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,618 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,618 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,619 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,619 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,619 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,620 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,620 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,620 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,621 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:45:25,632 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:45:25,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:45:25,640 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:45:25,652 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:45:25,677 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:45:25,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:45:25,678 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:45:25,678 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:45:25,678 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:45:25,678 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:45:25,678 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:45:25,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:45:25,692 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 68 transitions [2019-11-25 08:45:28,683 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24517 states. [2019-11-25 08:45:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24517 states. [2019-11-25 08:45:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:45:28,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:28,694 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] [2019-11-25 08:45:28,695 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:28,699 INFO L82 PathProgramCache]: Analyzing trace with hash 787087424, now seen corresponding path program 1 times [2019-11-25 08:45:28,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:28,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286672375] [2019-11-25 08:45:28,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:29,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286672375] [2019-11-25 08:45:29,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:29,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:45:29,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800917605] [2019-11-25 08:45:29,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:29,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:29,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:29,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:29,059 INFO L87 Difference]: Start difference. First operand 24517 states. Second operand 7 states. [2019-11-25 08:45:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:29,978 INFO L93 Difference]: Finished difference Result 28157 states and 99301 transitions. [2019-11-25 08:45:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:29,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-11-25 08:45:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:30,225 INFO L225 Difference]: With dead ends: 28157 [2019-11-25 08:45:30,226 INFO L226 Difference]: Without dead ends: 25615 [2019-11-25 08:45:30,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25615 states. [2019-11-25 08:45:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25615 to 23035. [2019-11-25 08:45:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23035 states. [2019-11-25 08:45:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23035 states to 23035 states and 81803 transitions. [2019-11-25 08:45:31,373 INFO L78 Accepts]: Start accepts. Automaton has 23035 states and 81803 transitions. Word has length 26 [2019-11-25 08:45:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:31,374 INFO L462 AbstractCegarLoop]: Abstraction has 23035 states and 81803 transitions. [2019-11-25 08:45:31,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 23035 states and 81803 transitions. [2019-11-25 08:45:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-25 08:45:31,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:31,383 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:31,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash 724490519, now seen corresponding path program 1 times [2019-11-25 08:45:31,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:31,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566184451] [2019-11-25 08:45:31,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:45:31,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566184451] [2019-11-25 08:45:31,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:31,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:45:31,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388393499] [2019-11-25 08:45:31,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:31,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:31,536 INFO L87 Difference]: Start difference. First operand 23035 states and 81803 transitions. Second operand 7 states. [2019-11-25 08:45:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:32,416 INFO L93 Difference]: Finished difference Result 26720 states and 93003 transitions. [2019-11-25 08:45:32,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:32,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-25 08:45:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:32,522 INFO L225 Difference]: With dead ends: 26720 [2019-11-25 08:45:32,522 INFO L226 Difference]: Without dead ends: 25502 [2019-11-25 08:45:32,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25502 states. [2019-11-25 08:45:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25502 to 22922. [2019-11-25 08:45:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22922 states. [2019-11-25 08:45:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22922 states to 22922 states and 80444 transitions. [2019-11-25 08:45:33,257 INFO L78 Accepts]: Start accepts. Automaton has 22922 states and 80444 transitions. Word has length 33 [2019-11-25 08:45:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:33,258 INFO L462 AbstractCegarLoop]: Abstraction has 22922 states and 80444 transitions. [2019-11-25 08:45:33,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22922 states and 80444 transitions. [2019-11-25 08:45:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-25 08:45:33,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:33,264 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:33,264 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash 86910085, now seen corresponding path program 1 times [2019-11-25 08:45:33,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:33,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808981635] [2019-11-25 08:45:33,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808981635] [2019-11-25 08:45:33,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520840079] [2019-11-25 08:45:33,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:33,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:45:33,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:33,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:33,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-25 08:45:33,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702257833] [2019-11-25 08:45:33,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:45:33,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:33,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:45:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:33,699 INFO L87 Difference]: Start difference. First operand 22922 states and 80444 transitions. Second operand 16 states. [2019-11-25 08:45:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:34,751 INFO L93 Difference]: Finished difference Result 23429 states and 81127 transitions. [2019-11-25 08:45:34,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:45:34,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2019-11-25 08:45:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:34,841 INFO L225 Difference]: With dead ends: 23429 [2019-11-25 08:45:34,842 INFO L226 Difference]: Without dead ends: 21611 [2019-11-25 08:45:34,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:45:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21611 states. [2019-11-25 08:45:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21611 to 18272. [2019-11-25 08:45:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18272 states. [2019-11-25 08:45:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18272 states to 18272 states and 63970 transitions. [2019-11-25 08:45:35,547 INFO L78 Accepts]: Start accepts. Automaton has 18272 states and 63970 transitions. Word has length 40 [2019-11-25 08:45:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:35,547 INFO L462 AbstractCegarLoop]: Abstraction has 18272 states and 63970 transitions. [2019-11-25 08:45:35,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:45:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 18272 states and 63970 transitions. [2019-11-25 08:45:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-25 08:45:35,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:35,554 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:35,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:35,766 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1766789163, now seen corresponding path program 1 times [2019-11-25 08:45:35,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:35,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272594027] [2019-11-25 08:45:35,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272594027] [2019-11-25 08:45:35,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820129443] [2019-11-25 08:45:35,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:36,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:45:36,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:36,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:36,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:45:36,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2019-11-25 08:45:36,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850898523] [2019-11-25 08:45:36,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:45:36,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:36,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:45:36,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:36,200 INFO L87 Difference]: Start difference. First operand 18272 states and 63970 transitions. Second operand 9 states. [2019-11-25 08:45:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:36,696 INFO L93 Difference]: Finished difference Result 26612 states and 91913 transitions. [2019-11-25 08:45:36,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:45:36,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2019-11-25 08:45:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:36,866 INFO L225 Difference]: With dead ends: 26612 [2019-11-25 08:45:36,866 INFO L226 Difference]: Without dead ends: 25562 [2019-11-25 08:45:36,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:45:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25562 states. [2019-11-25 08:45:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25562 to 19811. [2019-11-25 08:45:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19811 states. [2019-11-25 08:45:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19811 states to 19811 states and 69305 transitions. [2019-11-25 08:45:37,923 INFO L78 Accepts]: Start accepts. Automaton has 19811 states and 69305 transitions. Word has length 40 [2019-11-25 08:45:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:37,924 INFO L462 AbstractCegarLoop]: Abstraction has 19811 states and 69305 transitions. [2019-11-25 08:45:37,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:45:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 19811 states and 69305 transitions. [2019-11-25 08:45:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-25 08:45:37,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:37,928 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:38,134 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:38,134 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1449757743, now seen corresponding path program 2 times [2019-11-25 08:45:38,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:38,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560489853] [2019-11-25 08:45:38,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:45:38,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560489853] [2019-11-25 08:45:38,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:38,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-25 08:45:38,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274273279] [2019-11-25 08:45:38,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:45:38,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:45:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:45:38,250 INFO L87 Difference]: Start difference. First operand 19811 states and 69305 transitions. Second operand 9 states. [2019-11-25 08:45:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:38,705 INFO L93 Difference]: Finished difference Result 32627 states and 109922 transitions. [2019-11-25 08:45:38,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:45:38,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2019-11-25 08:45:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:38,784 INFO L225 Difference]: With dead ends: 32627 [2019-11-25 08:45:38,785 INFO L226 Difference]: Without dead ends: 30797 [2019-11-25 08:45:38,785 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:45:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30797 states. [2019-11-25 08:45:39,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30797 to 15557. [2019-11-25 08:45:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15557 states. [2019-11-25 08:45:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15557 states to 15557 states and 54510 transitions. [2019-11-25 08:45:39,346 INFO L78 Accepts]: Start accepts. Automaton has 15557 states and 54510 transitions. Word has length 40 [2019-11-25 08:45:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,347 INFO L462 AbstractCegarLoop]: Abstraction has 15557 states and 54510 transitions. [2019-11-25 08:45:39,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:45:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15557 states and 54510 transitions. [2019-11-25 08:45:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-25 08:45:39,349 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,349 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2019-11-25 08:45:39,350 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,350 INFO L82 PathProgramCache]: Analyzing trace with hash -323210293, now seen corresponding path program 1 times [2019-11-25 08:45:39,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:39,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702516588] [2019-11-25 08:45:39,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-25 08:45:39,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702516588] [2019-11-25 08:45:39,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:39,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:45:39,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753281498] [2019-11-25 08:45:39,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:39,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:39,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:39,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:39,464 INFO L87 Difference]: Start difference. First operand 15557 states and 54510 transitions. Second operand 7 states. [2019-11-25 08:45:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,731 INFO L93 Difference]: Finished difference Result 18144 states and 61890 transitions. [2019-11-25 08:45:39,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:39,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-25 08:45:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,771 INFO L225 Difference]: With dead ends: 18144 [2019-11-25 08:45:39,772 INFO L226 Difference]: Without dead ends: 16233 [2019-11-25 08:45:39,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16233 states. [2019-11-25 08:45:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16233 to 14361. [2019-11-25 08:45:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14361 states. [2019-11-25 08:45:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14361 states to 14361 states and 49038 transitions. [2019-11-25 08:45:40,585 INFO L78 Accepts]: Start accepts. Automaton has 14361 states and 49038 transitions. Word has length 40 [2019-11-25 08:45:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:40,588 INFO L462 AbstractCegarLoop]: Abstraction has 14361 states and 49038 transitions. [2019-11-25 08:45:40,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14361 states and 49038 transitions. [2019-11-25 08:45:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-25 08:45:40,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:40,605 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:40,605 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1086574749, now seen corresponding path program 1 times [2019-11-25 08:45:40,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:40,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643296954] [2019-11-25 08:45:40,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:40,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643296954] [2019-11-25 08:45:40,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176842833] [2019-11-25 08:45:40,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:40,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:45:40,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:40,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:40,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:40,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-25 08:45:40,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344819361] [2019-11-25 08:45:40,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:45:40,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:40,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:45:40,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:40,997 INFO L87 Difference]: Start difference. First operand 14361 states and 49038 transitions. Second operand 16 states. [2019-11-25 08:45:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:41,673 INFO L93 Difference]: Finished difference Result 14790 states and 49642 transitions. [2019-11-25 08:45:41,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:45:41,673 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2019-11-25 08:45:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:41,696 INFO L225 Difference]: With dead ends: 14790 [2019-11-25 08:45:41,696 INFO L226 Difference]: Without dead ends: 12738 [2019-11-25 08:45:41,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:45:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2019-11-25 08:45:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 11334. [2019-11-25 08:45:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11334 states. [2019-11-25 08:45:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 38053 transitions. [2019-11-25 08:45:41,961 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 38053 transitions. Word has length 47 [2019-11-25 08:45:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:41,961 INFO L462 AbstractCegarLoop]: Abstraction has 11334 states and 38053 transitions. [2019-11-25 08:45:41,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:45:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 38053 transitions. [2019-11-25 08:45:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:45:41,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:41,992 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:42,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:42,199 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:42,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:42,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2128445913, now seen corresponding path program 1 times [2019-11-25 08:45:42,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:42,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217095789] [2019-11-25 08:45:42,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:42,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217095789] [2019-11-25 08:45:42,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952172892] [2019-11-25 08:45:42,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:42,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:42,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:42,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:42,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:42,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-11-25 08:45:42,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106084909] [2019-11-25 08:45:42,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:45:42,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:45:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:42,653 INFO L87 Difference]: Start difference. First operand 11334 states and 38053 transitions. Second operand 19 states. [2019-11-25 08:45:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:43,480 INFO L93 Difference]: Finished difference Result 11802 states and 39460 transitions. [2019-11-25 08:45:43,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-25 08:45:43,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2019-11-25 08:45:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:43,503 INFO L225 Difference]: With dead ends: 11802 [2019-11-25 08:45:43,503 INFO L226 Difference]: Without dead ends: 9774 [2019-11-25 08:45:43,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2019-11-25 08:45:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2019-11-25 08:45:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 9072. [2019-11-25 08:45:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9072 states. [2019-11-25 08:45:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9072 states to 9072 states and 30206 transitions. [2019-11-25 08:45:43,704 INFO L78 Accepts]: Start accepts. Automaton has 9072 states and 30206 transitions. Word has length 54 [2019-11-25 08:45:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:43,704 INFO L462 AbstractCegarLoop]: Abstraction has 9072 states and 30206 transitions. [2019-11-25 08:45:43,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:45:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 9072 states and 30206 transitions. [2019-11-25 08:45:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:45:43,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:43,722 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:43,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:43,923 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:43,924 INFO L82 PathProgramCache]: Analyzing trace with hash 471304143, now seen corresponding path program 1 times [2019-11-25 08:45:43,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:43,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403438966] [2019-11-25 08:45:43,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:44,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403438966] [2019-11-25 08:45:44,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953523177] [2019-11-25 08:45:44,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:44,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:44,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:44,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:44,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:44,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2019-11-25 08:45:44,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724889396] [2019-11-25 08:45:44,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:45:44,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:44,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:45:44,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:44,320 INFO L87 Difference]: Start difference. First operand 9072 states and 30206 transitions. Second operand 19 states. [2019-11-25 08:45:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:45,066 INFO L93 Difference]: Finished difference Result 9540 states and 31613 transitions. [2019-11-25 08:45:45,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-25 08:45:45,067 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2019-11-25 08:45:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:45,078 INFO L225 Difference]: With dead ends: 9540 [2019-11-25 08:45:45,078 INFO L226 Difference]: Without dead ends: 6217 [2019-11-25 08:45:45,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2019-11-25 08:45:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2019-11-25 08:45:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 5515. [2019-11-25 08:45:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5515 states. [2019-11-25 08:45:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18362 transitions. [2019-11-25 08:45:45,179 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18362 transitions. Word has length 54 [2019-11-25 08:45:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:45,179 INFO L462 AbstractCegarLoop]: Abstraction has 5515 states and 18362 transitions. [2019-11-25 08:45:45,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:45:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18362 transitions. [2019-11-25 08:45:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:45:45,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:45,188 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:45,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:45,388 INFO L410 AbstractCegarLoop]: === Iteration 10 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 354002773, now seen corresponding path program 1 times [2019-11-25 08:45:45,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:45,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919302920] [2019-11-25 08:45:45,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:45,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919302920] [2019-11-25 08:45:45,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202683132] [2019-11-25 08:45:45,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:45,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:45,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:45,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:45:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:45:45,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:45:45,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2019-11-25 08:45:45,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017768619] [2019-11-25 08:45:45,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:45:45,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:45:45,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:45,724 INFO L87 Difference]: Start difference. First operand 5515 states and 18362 transitions. Second operand 11 states. [2019-11-25 08:45:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:45,933 INFO L93 Difference]: Finished difference Result 6550 states and 21218 transitions. [2019-11-25 08:45:45,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:45:45,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2019-11-25 08:45:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:45,942 INFO L225 Difference]: With dead ends: 6550 [2019-11-25 08:45:45,942 INFO L226 Difference]: Without dead ends: 4822 [2019-11-25 08:45:45,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:45:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2019-11-25 08:45:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2019-11-25 08:45:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4822 states. [2019-11-25 08:45:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 15312 transitions. [2019-11-25 08:45:46,036 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 15312 transitions. Word has length 54 [2019-11-25 08:45:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:46,036 INFO L462 AbstractCegarLoop]: Abstraction has 4822 states and 15312 transitions. [2019-11-25 08:45:46,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:45:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 15312 transitions. [2019-11-25 08:45:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:45:46,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:46,045 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:46,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:46,246 INFO L410 AbstractCegarLoop]: === Iteration 11 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:45:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:46,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1959500745, now seen corresponding path program 2 times [2019-11-25 08:45:46,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:46,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366054870] [2019-11-25 08:45:46,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-25 08:45:46,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366054870] [2019-11-25 08:45:46,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:46,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-25 08:45:46,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173648416] [2019-11-25 08:45:46,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:45:46,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:45:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:46,369 INFO L87 Difference]: Start difference. First operand 4822 states and 15312 transitions. Second operand 10 states. [2019-11-25 08:45:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:46,552 INFO L93 Difference]: Finished difference Result 4588 states and 14550 transitions. [2019-11-25 08:45:46,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:45:46,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2019-11-25 08:45:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:46,553 INFO L225 Difference]: With dead ends: 4588 [2019-11-25 08:45:46,553 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:45:46,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:45:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:45:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:45:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:45:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:45:46,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2019-11-25 08:45:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:46,555 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:45:46,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:45:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:45:46,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:45:46,559 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:45:46,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:45:46 BasicIcfg [2019-11-25 08:45:46,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:45:46,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:45:46,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:45:46,562 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:45:46,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:25" (3/4) ... [2019-11-25 08:45:46,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:45:46,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr [2019-11-25 08:45:46,579 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:45:46,579 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:45:46,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:45:46,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a3d399d-6515-4b51-a5d0-5d3b427b379e/bin/uautomizer/witness.graphml [2019-11-25 08:45:46,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:45:46,623 INFO L168 Benchmark]: Toolchain (without parser) took 22245.04 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 946.1 MB in the beginning and 680.1 MB in the end (delta: 266.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. [2019-11-25 08:45:46,624 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-25 08:45:46,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:46,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.22 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. [2019-11-25 08:45:46,625 INFO L168 Benchmark]: Boogie Preprocessor took 26.94 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. [2019-11-25 08:45:46,626 INFO L168 Benchmark]: RCFGBuilder took 436.53 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:46,627 INFO L168 Benchmark]: TraceAbstraction took 21020.86 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 687.9 MB in the end (delta: 398.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. [2019-11-25 08:45:46,627 INFO L168 Benchmark]: Witness Printer took 59.37 ms. Allocated memory is still 2.2 GB. Free memory was 687.9 MB in the beginning and 680.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:46,630 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 654.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.94 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 436.53 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21020.86 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 687.9 MB in the end (delta: 398.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. * Witness Printer took 59.37 ms. Allocated memory is still 2.2 GB. Free memory was 687.9 MB in the beginning and 680.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 77 locations, 4 error locations. Result: SAFE, OverallTime: 20.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1811 SDtfs, 5305 SDslu, 8791 SDs, 0 SdLazy, 2266 SolverSat, 600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 478 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24517occurred 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: 5.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 34170 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 771 NumberOfCodeBlocks, 771 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 754 ConstructedInterpolants, 0 QuantifiedInterpolants, 181413 SizeOfPredicates, 24 NumberOfNonLiveVariables, 602 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 76/148 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...