./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.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_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/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 68a59830508e5c76a74f62e3397ce0fa72f57022 ............................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:21:59,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:59,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:59,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:59,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:59,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:59,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:59,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:59,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:59,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:59,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:59,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:59,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:59,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:59,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:59,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:59,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:59,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:59,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:59,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:59,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:59,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:59,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:59,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:59,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:59,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:59,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:59,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:59,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:59,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:59,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:59,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:59,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:59,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:59,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:59,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:59,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:59,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:59,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:59,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:59,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:59,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:59,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:59,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:59,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:59,117 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:59,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:59,118 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:59,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:59,119 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:59,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:59,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:59,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:59,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:59,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:59,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:59,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:59,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:59,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:59,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:59,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:59,132 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_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/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 -> 68a59830508e5c76a74f62e3397ce0fa72f57022 [2019-10-22 11:21:59,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:59,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:59,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:59,182 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:59,182 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:59,183 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i [2019-10-22 11:21:59,231 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/data/b7610edcd/b98cbb37ce4942ccb47c99ccb8ff6b26/FLAG3228af75e [2019-10-22 11:21:59,692 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:59,692 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/sv-benchmarks/c/pthread-wmm/thin000_tso.opt.i [2019-10-22 11:21:59,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/data/b7610edcd/b98cbb37ce4942ccb47c99ccb8ff6b26/FLAG3228af75e [2019-10-22 11:22:00,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/data/b7610edcd/b98cbb37ce4942ccb47c99ccb8ff6b26 [2019-10-22 11:22:00,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:00,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:00,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:00,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:00,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:00,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62066543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00, skipping insertion in model container [2019-10-22 11:22:00,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,227 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:00,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:00,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:00,647 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:00,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:00,748 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:00,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00 WrapperNode [2019-10-22 11:22:00,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:00,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:00,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:00,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:00,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:00,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:00,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:00,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:00,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:00,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:00,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:00,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:00,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/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 11:22:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:22:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 11:22:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 11:22:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 11:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 11:22:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 11:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 11:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:00,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:00,906 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 11:22:01,199 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:01,199 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:22:01,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01 BoogieIcfgContainer [2019-10-22 11:22:01,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:01,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:01,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:01,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:01,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:00" (1/3) ... [2019-10-22 11:22:01,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19926484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:01, skipping insertion in model container [2019-10-22 11:22:01,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (2/3) ... [2019-10-22 11:22:01,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19926484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:01, skipping insertion in model container [2019-10-22 11:22:01,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01" (3/3) ... [2019-10-22 11:22:01,209 INFO L109 eAbstractionObserver]: Analyzing ICFG thin000_tso.opt.i [2019-10-22 11:22:01,239 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,240 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,241 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,242 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,242 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,242 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,242 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,242 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,243 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,243 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,243 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,243 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,243 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:22:01,252 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:22:01,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:01,262 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:01,274 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:01,288 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:01,288 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:01,288 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:01,288 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:01,289 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:01,289 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:01,289 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:01,289 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:01,297 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 42 transitions [2019-10-22 11:22:01,338 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 434 states. [2019-10-22 11:22:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states. [2019-10-22 11:22:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:22:01,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:01,351 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:01,353 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:01,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1726528678, now seen corresponding path program 1 times [2019-10-22 11:22:01,368 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:01,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882160309] [2019-10-22 11:22:01,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:01,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:01,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:01,651 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 11:22:01,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882160309] [2019-10-22 11:22:01,655 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:01,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:01,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939161474] [2019-10-22 11:22:01,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:01,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:01,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:01,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:01,679 INFO L87 Difference]: Start difference. First operand 434 states. Second operand 4 states. [2019-10-22 11:22:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:01,772 INFO L93 Difference]: Finished difference Result 444 states and 1061 transitions. [2019-10-22 11:22:01,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:01,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-22 11:22:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:01,792 INFO L225 Difference]: With dead ends: 444 [2019-10-22 11:22:01,796 INFO L226 Difference]: Without dead ends: 227 [2019-10-22 11:22:01,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2019-10-22 11:22:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2019-10-22 11:22:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-22 11:22:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 524 transitions. [2019-10-22 11:22:01,858 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 524 transitions. Word has length 25 [2019-10-22 11:22:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:01,859 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 524 transitions. [2019-10-22 11:22:01,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 524 transitions. [2019-10-22 11:22:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:22:01,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:01,865 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] [2019-10-22 11:22:01,866 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2060627448, now seen corresponding path program 1 times [2019-10-22 11:22:01,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:01,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834262615] [2019-10-22 11:22:01,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:01,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:01,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:02,018 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 11:22:02,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834262615] [2019-10-22 11:22:02,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:02,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:02,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453195883] [2019-10-22 11:22:02,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:02,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:02,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:02,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:02,023 INFO L87 Difference]: Start difference. First operand 227 states and 524 transitions. Second operand 5 states. [2019-10-22 11:22:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:02,102 INFO L93 Difference]: Finished difference Result 195 states and 416 transitions. [2019-10-22 11:22:02,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:02,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:22:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:02,106 INFO L225 Difference]: With dead ends: 195 [2019-10-22 11:22:02,106 INFO L226 Difference]: Without dead ends: 171 [2019-10-22 11:22:02,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-22 11:22:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2019-10-22 11:22:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-10-22 11:22:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 370 transitions. [2019-10-22 11:22:02,125 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 370 transitions. Word has length 26 [2019-10-22 11:22:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:02,125 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 370 transitions. [2019-10-22 11:22:02,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 370 transitions. [2019-10-22 11:22:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:22:02,126 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:02,127 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 11:22:02,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:02,127 INFO L82 PathProgramCache]: Analyzing trace with hash 822076318, now seen corresponding path program 1 times [2019-10-22 11:22:02,127 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:02,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356524129] [2019-10-22 11:22:02,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:02,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:02,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:02,278 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 11:22:02,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356524129] [2019-10-22 11:22:02,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:02,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:22:02,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844651777] [2019-10-22 11:22:02,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:02,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:02,281 INFO L87 Difference]: Start difference. First operand 171 states and 370 transitions. Second operand 8 states. [2019-10-22 11:22:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:02,390 INFO L93 Difference]: Finished difference Result 267 states and 594 transitions. [2019-10-22 11:22:02,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:22:02,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-10-22 11:22:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:02,392 INFO L225 Difference]: With dead ends: 267 [2019-10-22 11:22:02,392 INFO L226 Difference]: Without dead ends: 167 [2019-10-22 11:22:02,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:22:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-10-22 11:22:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2019-10-22 11:22:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-10-22 11:22:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 362 transitions. [2019-10-22 11:22:02,404 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 362 transitions. Word has length 27 [2019-10-22 11:22:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:02,405 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 362 transitions. [2019-10-22 11:22:02,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 362 transitions. [2019-10-22 11:22:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:22:02,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:02,406 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 11:22:02,406 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2138233622, now seen corresponding path program 2 times [2019-10-22 11:22:02,407 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:02,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639683298] [2019-10-22 11:22:02,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:02,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:02,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:02,516 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 11:22:02,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639683298] [2019-10-22 11:22:02,517 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:02,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:22:02,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570360507] [2019-10-22 11:22:02,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:02,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:02,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:02,518 INFO L87 Difference]: Start difference. First operand 167 states and 362 transitions. Second operand 8 states. [2019-10-22 11:22:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:02,640 INFO L93 Difference]: Finished difference Result 135 states and 282 transitions. [2019-10-22 11:22:02,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:22:02,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-10-22 11:22:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:02,641 INFO L225 Difference]: With dead ends: 135 [2019-10-22 11:22:02,641 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:22:02,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:22:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:22:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:22:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:22:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:22:02,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-22 11:22:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:02,643 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:22:02,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:22:02,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:22:02,646 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:22:02,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:02 BasicIcfg [2019-10-22 11:22:02,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:02,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:02,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:02,650 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:02,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01" (3/4) ... [2019-10-22 11:22:02,653 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:22:02,659 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 11:22:02,659 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 11:22:02,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 11:22:02,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:22:02,707 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_baaec1b1-1b0b-4ba7-9eb1-e63f0abed52a/bin/utaipan/witness.graphml [2019-10-22 11:22:02,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:02,710 INFO L168 Benchmark]: Toolchain (without parser) took 2495.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.2 MB in the beginning and 923.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 132.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:02,710 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:02,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -132.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:02,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:02,711 INFO L168 Benchmark]: Boogie Preprocessor took 33.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:02,712 INFO L168 Benchmark]: RCFGBuilder took 365.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:02,713 INFO L168 Benchmark]: TraceAbstraction took 1447.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 930.7 MB in the end (delta: 115.9 MB). Peak memory consumption was 115.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:02,713 INFO L168 Benchmark]: Witness Printer took 58.34 ms. Allocated memory is still 1.1 GB. Free memory was 930.7 MB in the beginning and 923.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:02,716 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 535.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -132.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.63 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 365.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1447.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 930.7 MB in the end (delta: 115.9 MB). Peak memory consumption was 115.9 MB. Max. memory is 11.5 GB. * Witness Printer took 58.34 ms. Allocated memory is still 1.1 GB. Free memory was 930.7 MB in the beginning and 923.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 160 SDtfs, 188 SDslu, 408 SDs, 0 SdLazy, 62 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 8353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...