./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/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 3ede5453ff4880225cb88b0dd90121515560cc28 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:16:34,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:16:34,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:16:34,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:16:34,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:16:34,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:16:34,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:16:34,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:16:34,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:16:34,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:16:34,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:16:34,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:16:34,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:16:34,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:16:34,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:16:34,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:16:34,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:16:34,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:16:34,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:16:34,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:16:34,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:16:34,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:16:34,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:16:34,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:16:34,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:16:34,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:16:34,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:16:34,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:16:34,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:16:34,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:16:34,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:16:34,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:16:34,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:16:34,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:16:34,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:16:34,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:16:34,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:16:34,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:16:34,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:16:34,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:16:34,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:16:34,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:16:34,211 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:16:34,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:16:34,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:16:34,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:16:34,213 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:16:34,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:16:34,214 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:16:34,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:16:34,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:16:34,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:16:34,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:16:34,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:16:34,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:16:34,216 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:16:34,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:16:34,216 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:16:34,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:16:34,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:16:34,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:16:34,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:16:34,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:16:34,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:16:34,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:16:34,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:16:34,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:16:34,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:16:34,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:16:34,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:16:34,220 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_346a66d9-888d-444d-8b65-70eded11f06a/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 -> 3ede5453ff4880225cb88b0dd90121515560cc28 [2019-11-20 10:16:34,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:16:34,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:16:34,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:16:34,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:16:34,414 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:16:34,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2019-11-20 10:16:34,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/data/77e3dea5a/612ed41b507e4e3c9b4122a72f79bfad/FLAGc6a2f2604 [2019-11-20 10:16:34,999 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:16:35,000 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2019-11-20 10:16:35,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/data/77e3dea5a/612ed41b507e4e3c9b4122a72f79bfad/FLAGc6a2f2604 [2019-11-20 10:16:35,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/data/77e3dea5a/612ed41b507e4e3c9b4122a72f79bfad [2019-11-20 10:16:35,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:16:35,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:16:35,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:16:35,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:16:35,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:16:35,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5e21ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35, skipping insertion in model container [2019-11-20 10:16:35,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,289 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:16:35,339 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:16:35,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:16:35,808 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:16:35,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:16:35,938 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:16:35,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35 WrapperNode [2019-11-20 10:16:35,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:16:35,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:16:35,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:16:35,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:16:35,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:16:35,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:16:35,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:16:35,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:16:35,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:35,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:36,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:36,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:36,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... [2019-11-20 10:16:36,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:16:36,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:16:36,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:16:36,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:16:36,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/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 [2019-11-20 10:16:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-20 10:16:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-20 10:16:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 10:16:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:16:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:16:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:16:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:16:36,070 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 10:16:36,326 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:16:36,326 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 10:16:36,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:36 BoogieIcfgContainer [2019-11-20 10:16:36,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:16:36,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:16:36,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:16:36,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:16:36,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:16:35" (1/3) ... [2019-11-20 10:16:36,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23a8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:16:36, skipping insertion in model container [2019-11-20 10:16:36,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:16:35" (2/3) ... [2019-11-20 10:16:36,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23a8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:16:36, skipping insertion in model container [2019-11-20 10:16:36,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:36" (3/3) ... [2019-11-20 10:16:36,335 INFO L109 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2019-11-20 10:16:36,371 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,372 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,372 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,372 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,373 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,373 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,374 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,374 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,374 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,374 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,375 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,376 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,376 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,377 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,377 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,377 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,377 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,378 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,378 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,378 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,379 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,379 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,379 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,380 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,380 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,380 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,381 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,381 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,382 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,382 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,382 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,383 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,383 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,383 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,383 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,384 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,384 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,384 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,385 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:16:36,409 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 10:16:36,409 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:16:36,417 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 10:16:36,429 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 10:16:36,450 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:16:36,451 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:16:36,451 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:16:36,451 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:16:36,451 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:16:36,452 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:16:36,452 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:16:36,452 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:16:36,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 58 transitions [2019-11-20 10:16:38,809 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19782 states. [2019-11-20 10:16:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19782 states. [2019-11-20 10:16:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 10:16:38,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:38,837 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] [2019-11-20 10:16:38,838 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash -71964291, now seen corresponding path program 1 times [2019-11-20 10:16:38,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:38,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107542904] [2019-11-20 10:16:38,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:16:39,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107542904] [2019-11-20 10:16:39,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:39,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:16:39,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4304353] [2019-11-20 10:16:39,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:16:39,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:16:39,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:39,116 INFO L87 Difference]: Start difference. First operand 19782 states. Second operand 3 states. [2019-11-20 10:16:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:39,440 INFO L93 Difference]: Finished difference Result 10325 states and 34189 transitions. [2019-11-20 10:16:39,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:16:39,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-20 10:16:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:39,571 INFO L225 Difference]: With dead ends: 10325 [2019-11-20 10:16:39,571 INFO L226 Difference]: Without dead ends: 9821 [2019-11-20 10:16:39,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9821 states. [2019-11-20 10:16:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9821 to 8489. [2019-11-20 10:16:40,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8489 states. [2019-11-20 10:16:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8489 states to 8489 states and 28231 transitions. [2019-11-20 10:16:40,112 INFO L78 Accepts]: Start accepts. Automaton has 8489 states and 28231 transitions. Word has length 21 [2019-11-20 10:16:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:40,113 INFO L462 AbstractCegarLoop]: Abstraction has 8489 states and 28231 transitions. [2019-11-20 10:16:40,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:16:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 8489 states and 28231 transitions. [2019-11-20 10:16:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 10:16:40,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:40,116 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] [2019-11-20 10:16:40,116 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash -25420162, now seen corresponding path program 1 times [2019-11-20 10:16:40,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:40,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127845648] [2019-11-20 10:16:40,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:16:40,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127845648] [2019-11-20 10:16:40,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:40,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:16:40,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128639771] [2019-11-20 10:16:40,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:16:40,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:16:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:40,186 INFO L87 Difference]: Start difference. First operand 8489 states and 28231 transitions. Second operand 3 states. [2019-11-20 10:16:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:40,355 INFO L93 Difference]: Finished difference Result 9273 states and 30319 transitions. [2019-11-20 10:16:40,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:16:40,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-20 10:16:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:40,418 INFO L225 Difference]: With dead ends: 9273 [2019-11-20 10:16:40,418 INFO L226 Difference]: Without dead ends: 8985 [2019-11-20 10:16:40,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2019-11-20 10:16:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 8037. [2019-11-20 10:16:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8037 states. [2019-11-20 10:16:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8037 states to 8037 states and 26366 transitions. [2019-11-20 10:16:40,763 INFO L78 Accepts]: Start accepts. Automaton has 8037 states and 26366 transitions. Word has length 21 [2019-11-20 10:16:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:40,764 INFO L462 AbstractCegarLoop]: Abstraction has 8037 states and 26366 transitions. [2019-11-20 10:16:40,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:16:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8037 states and 26366 transitions. [2019-11-20 10:16:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 10:16:40,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:40,766 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] [2019-11-20 10:16:40,766 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:40,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1245904513, now seen corresponding path program 1 times [2019-11-20 10:16:40,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:40,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919849427] [2019-11-20 10:16:40,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:16:40,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919849427] [2019-11-20 10:16:40,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:40,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:16:40,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382984843] [2019-11-20 10:16:40,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:16:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:16:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:40,805 INFO L87 Difference]: Start difference. First operand 8037 states and 26366 transitions. Second operand 3 states. [2019-11-20 10:16:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:40,973 INFO L93 Difference]: Finished difference Result 7969 states and 25399 transitions. [2019-11-20 10:16:40,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:16:40,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-20 10:16:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:41,007 INFO L225 Difference]: With dead ends: 7969 [2019-11-20 10:16:41,008 INFO L226 Difference]: Without dead ends: 7681 [2019-11-20 10:16:41,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:16:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7681 states. [2019-11-20 10:16:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 7225. [2019-11-20 10:16:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7225 states. [2019-11-20 10:16:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7225 states to 7225 states and 23010 transitions. [2019-11-20 10:16:41,443 INFO L78 Accepts]: Start accepts. Automaton has 7225 states and 23010 transitions. Word has length 21 [2019-11-20 10:16:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:41,444 INFO L462 AbstractCegarLoop]: Abstraction has 7225 states and 23010 transitions. [2019-11-20 10:16:41,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:16:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7225 states and 23010 transitions. [2019-11-20 10:16:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:41,450 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:41,451 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] [2019-11-20 10:16:41,451 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:41,452 INFO L82 PathProgramCache]: Analyzing trace with hash -210155525, now seen corresponding path program 1 times [2019-11-20 10:16:41,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:41,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562433184] [2019-11-20 10:16:41,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:41,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562433184] [2019-11-20 10:16:41,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:41,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:41,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766185142] [2019-11-20 10:16:41,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:41,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:41,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:41,568 INFO L87 Difference]: Start difference. First operand 7225 states and 23010 transitions. Second operand 5 states. [2019-11-20 10:16:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:41,853 INFO L93 Difference]: Finished difference Result 9865 states and 30579 transitions. [2019-11-20 10:16:41,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:16:41,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:41,890 INFO L225 Difference]: With dead ends: 9865 [2019-11-20 10:16:41,890 INFO L226 Difference]: Without dead ends: 9565 [2019-11-20 10:16:41,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:16:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9565 states. [2019-11-20 10:16:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9565 to 7281. [2019-11-20 10:16:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7281 states. [2019-11-20 10:16:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7281 states to 7281 states and 23182 transitions. [2019-11-20 10:16:42,206 INFO L78 Accepts]: Start accepts. Automaton has 7281 states and 23182 transitions. Word has length 31 [2019-11-20 10:16:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:42,207 INFO L462 AbstractCegarLoop]: Abstraction has 7281 states and 23182 transitions. [2019-11-20 10:16:42,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7281 states and 23182 transitions. [2019-11-20 10:16:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:42,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:42,214 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] [2019-11-20 10:16:42,215 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:42,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:42,215 INFO L82 PathProgramCache]: Analyzing trace with hash -900974979, now seen corresponding path program 1 times [2019-11-20 10:16:42,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:42,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509374596] [2019-11-20 10:16:42,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:42,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509374596] [2019-11-20 10:16:42,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:42,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:42,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709556186] [2019-11-20 10:16:42,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:42,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:42,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:42,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:42,306 INFO L87 Difference]: Start difference. First operand 7281 states and 23182 transitions. Second operand 5 states. [2019-11-20 10:16:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:42,468 INFO L93 Difference]: Finished difference Result 9045 states and 27703 transitions. [2019-11-20 10:16:42,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:16:42,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:42,500 INFO L225 Difference]: With dead ends: 9045 [2019-11-20 10:16:42,500 INFO L226 Difference]: Without dead ends: 8313 [2019-11-20 10:16:42,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:16:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2019-11-20 10:16:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 5717. [2019-11-20 10:16:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5717 states. [2019-11-20 10:16:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 17948 transitions. [2019-11-20 10:16:42,724 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 17948 transitions. Word has length 31 [2019-11-20 10:16:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:42,726 INFO L462 AbstractCegarLoop]: Abstraction has 5717 states and 17948 transitions. [2019-11-20 10:16:42,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 17948 transitions. [2019-11-20 10:16:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:42,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:42,733 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] [2019-11-20 10:16:42,740 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1882984826, now seen corresponding path program 1 times [2019-11-20 10:16:42,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:42,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734529175] [2019-11-20 10:16:42,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:42,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734529175] [2019-11-20 10:16:42,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:42,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760168579] [2019-11-20 10:16:42,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:42,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:42,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:42,908 INFO L87 Difference]: Start difference. First operand 5717 states and 17948 transitions. Second operand 5 states. [2019-11-20 10:16:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:43,067 INFO L93 Difference]: Finished difference Result 7245 states and 22159 transitions. [2019-11-20 10:16:43,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:16:43,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:43,094 INFO L225 Difference]: With dead ends: 7245 [2019-11-20 10:16:43,094 INFO L226 Difference]: Without dead ends: 6857 [2019-11-20 10:16:43,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:16:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2019-11-20 10:16:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 5761. [2019-11-20 10:16:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2019-11-20 10:16:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 17983 transitions. [2019-11-20 10:16:43,296 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 17983 transitions. Word has length 31 [2019-11-20 10:16:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:43,297 INFO L462 AbstractCegarLoop]: Abstraction has 5761 states and 17983 transitions. [2019-11-20 10:16:43,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 17983 transitions. [2019-11-20 10:16:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:43,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:43,304 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] [2019-11-20 10:16:43,305 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:43,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1160035556, now seen corresponding path program 1 times [2019-11-20 10:16:43,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:43,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028754130] [2019-11-20 10:16:43,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:43,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028754130] [2019-11-20 10:16:43,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:43,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:43,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257824235] [2019-11-20 10:16:43,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:43,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:43,353 INFO L87 Difference]: Start difference. First operand 5761 states and 17983 transitions. Second operand 5 states. [2019-11-20 10:16:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:43,486 INFO L93 Difference]: Finished difference Result 6301 states and 18949 transitions. [2019-11-20 10:16:43,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:16:43,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:43,504 INFO L225 Difference]: With dead ends: 6301 [2019-11-20 10:16:43,504 INFO L226 Difference]: Without dead ends: 5409 [2019-11-20 10:16:43,505 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:16:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2019-11-20 10:16:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 3837. [2019-11-20 10:16:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3837 states. [2019-11-20 10:16:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 11931 transitions. [2019-11-20 10:16:43,628 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 11931 transitions. Word has length 31 [2019-11-20 10:16:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:43,629 INFO L462 AbstractCegarLoop]: Abstraction has 3837 states and 11931 transitions. [2019-11-20 10:16:43,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 11931 transitions. [2019-11-20 10:16:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:43,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:43,635 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] [2019-11-20 10:16:43,635 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1571330055, now seen corresponding path program 1 times [2019-11-20 10:16:43,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:43,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992225881] [2019-11-20 10:16:43,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:43,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992225881] [2019-11-20 10:16:43,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:43,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:43,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615109579] [2019-11-20 10:16:43,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:43,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:43,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:43,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:43,686 INFO L87 Difference]: Start difference. First operand 3837 states and 11931 transitions. Second operand 5 states. [2019-11-20 10:16:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:43,804 INFO L93 Difference]: Finished difference Result 4593 states and 13777 transitions. [2019-11-20 10:16:43,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:16:43,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:43,817 INFO L225 Difference]: With dead ends: 4593 [2019-11-20 10:16:43,818 INFO L226 Difference]: Without dead ends: 3453 [2019-11-20 10:16:43,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:16:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2019-11-20 10:16:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3309. [2019-11-20 10:16:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2019-11-20 10:16:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 10101 transitions. [2019-11-20 10:16:43,910 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 10101 transitions. Word has length 31 [2019-11-20 10:16:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:43,911 INFO L462 AbstractCegarLoop]: Abstraction has 3309 states and 10101 transitions. [2019-11-20 10:16:43,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 10101 transitions. [2019-11-20 10:16:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:16:43,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:16:43,916 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] [2019-11-20 10:16:43,916 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:16:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:16:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2038146331, now seen corresponding path program 2 times [2019-11-20 10:16:43,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:16:43,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521857960] [2019-11-20 10:16:43,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:16:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:16:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:16:43,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521857960] [2019-11-20 10:16:43,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:16:43,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:16:43,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726382561] [2019-11-20 10:16:43,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:16:43,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:16:43,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:16:43,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:16:43,979 INFO L87 Difference]: Start difference. First operand 3309 states and 10101 transitions. Second operand 5 states. [2019-11-20 10:16:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:16:44,056 INFO L93 Difference]: Finished difference Result 2665 states and 7903 transitions. [2019-11-20 10:16:44,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:16:44,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:16:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:16:44,057 INFO L225 Difference]: With dead ends: 2665 [2019-11-20 10:16:44,057 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:16:44,058 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:16:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:16:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:16:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:16:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:16:44,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-11-20 10:16:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:16:44,059 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:16:44,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:16:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:16:44,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:16:44,062 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 10:16:44,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:16:44 BasicIcfg [2019-11-20 10:16:44,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:16:44,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:16:44,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:16:44,066 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:16:44,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:16:36" (3/4) ... [2019-11-20 10:16:44,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:16:44,079 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-20 10:16:44,094 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-20 10:16:44,094 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 10:16:44,094 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 10:16:44,152 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_346a66d9-888d-444d-8b65-70eded11f06a/bin/uautomizer/witness.graphml [2019-11-20 10:16:44,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:16:44,155 INFO L168 Benchmark]: Toolchain (without parser) took 8880.23 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 498.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -145.8 MB). Peak memory consumption was 352.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,155 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:16:44,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,161 INFO L168 Benchmark]: Boogie Preprocessor took 27.11 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. [2019-11-20 10:16:44,161 INFO L168 Benchmark]: RCFGBuilder took 318.70 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,162 INFO L168 Benchmark]: TraceAbstraction took 7736.62 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 376.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.7 MB). Peak memory consumption was 341.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,163 INFO L168 Benchmark]: Witness Printer took 86.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:16:44,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 664.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.11 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 318.70 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7736.62 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 376.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.7 MB). Peak memory consumption was 341.8 MB. Max. memory is 11.5 GB. * Witness Printer took 86.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: 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, 67 locations, 4 error locations. Result: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 867 SDtfs, 647 SDslu, 1165 SDs, 0 SdLazy, 342 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19782occurred 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: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 10428 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 8520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 18/18 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...