./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:31,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:31,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:31,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:31,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:31,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:31,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:31,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:31,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:31,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:31,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:31,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:31,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:31,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:31,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:31,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:31,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:31,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:31,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:31,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:31,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:31,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:31,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:31,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:31,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:31,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:31,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:31,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:31,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:31,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:31,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:31,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:31,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:31,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:31,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:31,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:31,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:31,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:31,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:31,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:31,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:31,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:31,227 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:31,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:31,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:31,228 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:31,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:31,228 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:31,229 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:31,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:31,230 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:31,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:31,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:31,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:31,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:31,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:31,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:31,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:31,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:31,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:31,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:31,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:31,233 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:31,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:31,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:31,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:31,234 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan 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 -> Taipan 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 -> 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 [2019-10-22 11:24:31,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:31,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:31,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:31,288 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:31,288 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:31,289 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/peterson.i [2019-10-22 11:24:31,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/data/290681054/3b9b95aeb5db46cd8d3c796b4cde3f43/FLAG3a889641d [2019-10-22 11:24:31,785 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:31,785 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/sv-benchmarks/c/pthread-atomic/peterson.i [2019-10-22 11:24:31,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/data/290681054/3b9b95aeb5db46cd8d3c796b4cde3f43/FLAG3a889641d [2019-10-22 11:24:32,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/data/290681054/3b9b95aeb5db46cd8d3c796b4cde3f43 [2019-10-22 11:24:32,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:32,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:32,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:32,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:32,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:32,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a01417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32, skipping insertion in model container [2019-10-22 11:24:32,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,330 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:32,365 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:32,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:32,731 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:32,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:32,845 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:32,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32 WrapperNode [2019-10-22 11:24:32,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:32,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:32,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:32,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:32,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:32,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:32,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:32,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:32,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... [2019-10-22 11:24:32,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:32,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:32,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:32,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:32,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:33,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:24:33,012 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-22 11:24:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-22 11:24:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 11:24:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 11:24:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:24:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:33,017 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:24:33,358 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:33,359 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:24:33,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:33 BoogieIcfgContainer [2019-10-22 11:24:33,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:33,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:33,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:33,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:33,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:32" (1/3) ... [2019-10-22 11:24:33,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183670c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:33, skipping insertion in model container [2019-10-22 11:24:33,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:32" (2/3) ... [2019-10-22 11:24:33,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183670c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:33, skipping insertion in model container [2019-10-22 11:24:33,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:33" (3/3) ... [2019-10-22 11:24:33,368 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2019-10-22 11:24:33,405 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,406 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,406 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,406 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,408 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,409 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,409 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,411 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,412 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,412 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,413 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,413 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:24:33,433 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:24:33,433 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:33,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:24:33,455 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:24:33,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:33,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:33,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:33,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:33,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:33,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:33,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:33,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:33,485 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 59 transitions [2019-10-22 11:24:33,535 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2019-10-22 11:24:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2019-10-22 11:24:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:24:33,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:33,546 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:33,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:33,553 INFO L82 PathProgramCache]: Analyzing trace with hash -314497957, now seen corresponding path program 1 times [2019-10-22 11:24:33,562 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:33,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72930193] [2019-10-22 11:24:33,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:33,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:33,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:33,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72930193] [2019-10-22 11:24:33,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:33,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:33,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136507088] [2019-10-22 11:24:33,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:33,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:33,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:33,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:33,727 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2019-10-22 11:24:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:33,775 INFO L93 Difference]: Finished difference Result 561 states and 1390 transitions. [2019-10-22 11:24:33,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:33,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-22 11:24:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:33,800 INFO L225 Difference]: With dead ends: 561 [2019-10-22 11:24:33,800 INFO L226 Difference]: Without dead ends: 480 [2019-10-22 11:24:33,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-10-22 11:24:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2019-10-22 11:24:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2019-10-22 11:24:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1204 transitions. [2019-10-22 11:24:33,896 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1204 transitions. Word has length 19 [2019-10-22 11:24:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:33,897 INFO L462 AbstractCegarLoop]: Abstraction has 480 states and 1204 transitions. [2019-10-22 11:24:33,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1204 transitions. [2019-10-22 11:24:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:24:33,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:33,898 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:33,899 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:33,899 INFO L82 PathProgramCache]: Analyzing trace with hash -314468166, now seen corresponding path program 1 times [2019-10-22 11:24:33,899 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:33,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112104644] [2019-10-22 11:24:33,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:33,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:33,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:33,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112104644] [2019-10-22 11:24:33,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:33,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:33,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978654659] [2019-10-22 11:24:33,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:33,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:33,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:33,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:33,995 INFO L87 Difference]: Start difference. First operand 480 states and 1204 transitions. Second operand 3 states. [2019-10-22 11:24:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:34,038 INFO L93 Difference]: Finished difference Result 513 states and 1237 transitions. [2019-10-22 11:24:34,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:34,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:24:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:34,041 INFO L225 Difference]: With dead ends: 513 [2019-10-22 11:24:34,041 INFO L226 Difference]: Without dead ends: 423 [2019-10-22 11:24:34,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-10-22 11:24:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 378. [2019-10-22 11:24:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2019-10-22 11:24:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 922 transitions. [2019-10-22 11:24:34,062 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 922 transitions. Word has length 19 [2019-10-22 11:24:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:34,063 INFO L462 AbstractCegarLoop]: Abstraction has 378 states and 922 transitions. [2019-10-22 11:24:34,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 922 transitions. [2019-10-22 11:24:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:24:34,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:34,064 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:34,064 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash -884839659, now seen corresponding path program 1 times [2019-10-22 11:24:34,065 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:34,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902992721] [2019-10-22 11:24:34,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:34,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902992721] [2019-10-22 11:24:34,122 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:34,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:34,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210984373] [2019-10-22 11:24:34,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:34,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:34,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:34,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:34,123 INFO L87 Difference]: Start difference. First operand 378 states and 922 transitions. Second operand 3 states. [2019-10-22 11:24:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:34,152 INFO L93 Difference]: Finished difference Result 345 states and 805 transitions. [2019-10-22 11:24:34,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:34,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:24:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:34,154 INFO L225 Difference]: With dead ends: 345 [2019-10-22 11:24:34,154 INFO L226 Difference]: Without dead ends: 243 [2019-10-22 11:24:34,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2019-10-22 11:24:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2019-10-22 11:24:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-10-22 11:24:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 556 transitions. [2019-10-22 11:24:34,168 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 556 transitions. Word has length 22 [2019-10-22 11:24:34,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:34,169 INFO L462 AbstractCegarLoop]: Abstraction has 243 states and 556 transitions. [2019-10-22 11:24:34,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 556 transitions. [2019-10-22 11:24:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:24:34,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:34,171 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:34,171 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 771865552, now seen corresponding path program 1 times [2019-10-22 11:24:34,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:34,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028757377] [2019-10-22 11:24:34,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:34,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028757377] [2019-10-22 11:24:34,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:34,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:34,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354354498] [2019-10-22 11:24:34,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:34,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:34,246 INFO L87 Difference]: Start difference. First operand 243 states and 556 transitions. Second operand 4 states. [2019-10-22 11:24:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:34,272 INFO L93 Difference]: Finished difference Result 264 states and 607 transitions. [2019-10-22 11:24:34,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:34,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-22 11:24:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:34,274 INFO L225 Difference]: With dead ends: 264 [2019-10-22 11:24:34,274 INFO L226 Difference]: Without dead ends: 228 [2019-10-22 11:24:34,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-10-22 11:24:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2019-10-22 11:24:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2019-10-22 11:24:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 496 transitions. [2019-10-22 11:24:34,282 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 496 transitions. Word has length 27 [2019-10-22 11:24:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:34,282 INFO L462 AbstractCegarLoop]: Abstraction has 228 states and 496 transitions. [2019-10-22 11:24:34,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 496 transitions. [2019-10-22 11:24:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:24:34,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:34,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:34,284 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1716183078, now seen corresponding path program 1 times [2019-10-22 11:24:34,284 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:34,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248478798] [2019-10-22 11:24:34,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:34,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:34,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248478798] [2019-10-22 11:24:34,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:34,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:34,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013449899] [2019-10-22 11:24:34,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:34,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:34,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:34,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:34,326 INFO L87 Difference]: Start difference. First operand 228 states and 496 transitions. Second operand 4 states. [2019-10-22 11:24:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:34,350 INFO L93 Difference]: Finished difference Result 105 states and 234 transitions. [2019-10-22 11:24:34,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:34,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-22 11:24:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:34,351 INFO L225 Difference]: With dead ends: 105 [2019-10-22 11:24:34,351 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:34,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:34,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-22 11:24:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:34,353 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:34,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:34,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:34,356 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:24:34,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:34 BasicIcfg [2019-10-22 11:24:34,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:34,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:34,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:34,362 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:34,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:33" (3/4) ... [2019-10-22 11:24:34,366 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:34,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-10-22 11:24:34,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 11:24:34,377 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-10-22 11:24:34,377 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:24:34,410 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0ac9a41e-55e1-4b19-b7ce-6a2d2bef65e4/bin/utaipan/witness.graphml [2019-10-22 11:24:34,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:34,412 INFO L168 Benchmark]: Toolchain (without parser) took 2096.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 939.2 MB in the beginning and 1.0 GB in the end (delta: -76.7 MB). Peak memory consumption was 81.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:34,413 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:34,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:34,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.63 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. [2019-10-22 11:24:34,414 INFO L168 Benchmark]: Boogie Preprocessor took 37.77 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. [2019-10-22 11:24:34,415 INFO L168 Benchmark]: RCFGBuilder took 427.93 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:34,415 INFO L168 Benchmark]: TraceAbstraction took 1000.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:34,415 INFO L168 Benchmark]: Witness Printer took 48.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:34,418 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 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 530.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.63 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 37.77 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 427.93 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1000.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: 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, 78 locations, 4 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 99 SDslu, 130 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...