./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.opt_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.opt_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/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 be60b145cd29aad3973e12921777ec138d6dc3f5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:50:46,164 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:50:46,165 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:50:46,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:50:46,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:50:46,174 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:50:46,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:50:46,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:50:46,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:50:46,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:50:46,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:50:46,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:50:46,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:50:46,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:50:46,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:50:46,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:50:46,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:50:46,183 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:50:46,184 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:50:46,185 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:50:46,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:50:46,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:50:46,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:50:46,189 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:50:46,189 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:50:46,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:50:46,190 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:50:46,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:50:46,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:50:46,192 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:50:46,192 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:50:46,193 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:50:46,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:50:46,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:50:46,194 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:50:46,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:50:46,194 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 22:50:46,205 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:50:46,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:50:46,205 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:50:46,205 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 22:50:46,206 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 22:50:46,206 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 22:50:46,207 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 22:50:46,207 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 22:50:46,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:50:46,207 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 22:50:46,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 22:50:46,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:50:46,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:50:46,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:50:46,210 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:50:46,210 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 22:50:46,211 INFO L133 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_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/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 -> be60b145cd29aad3973e12921777ec138d6dc3f5 [2018-11-22 22:50:46,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:50:46,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:50:46,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:50:46,243 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:50:46,243 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:50:46,244 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/safe005_tso.opt_true-unreach-call.i [2018-11-22 22:50:46,280 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/data/c37ec4499/f7a206236b3b4a8e8598c5c7707a7144/FLAG4a52e4090 [2018-11-22 22:50:46,634 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:50:46,634 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/sv-benchmarks/c/pthread-wmm/safe005_tso.opt_true-unreach-call.i [2018-11-22 22:50:46,646 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/data/c37ec4499/f7a206236b3b4a8e8598c5c7707a7144/FLAG4a52e4090 [2018-11-22 22:50:46,655 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/data/c37ec4499/f7a206236b3b4a8e8598c5c7707a7144 [2018-11-22 22:50:46,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:50:46,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:50:46,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:50:46,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:50:46,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:50:46,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:50:46" (1/1) ... [2018-11-22 22:50:46,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28603259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:46, skipping insertion in model container [2018-11-22 22:50:46,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:50:46" (1/1) ... [2018-11-22 22:50:46,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:50:46,702 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:50:46,915 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:50:46,925 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:50:47,003 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:50:47,038 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:50:47,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47 WrapperNode [2018-11-22 22:50:47,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:50:47,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:50:47,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:50:47,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:50:47,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:50:47,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:50:47,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:50:47,074 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:50:47,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... [2018-11-22 22:50:47,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:50:47,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:50:47,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:50:47,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:50:47,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/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 [2018-11-22 22:50:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 22:50:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 22:50:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-22 22:50:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 22:50:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-11-22 22:50:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-11-22 22:50:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-11-22 22:50:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-11-22 22:50:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-11-22 22:50:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-11-22 22:50:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-22 22:50:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:50:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:50:47,150 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-22 22:50:47,423 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:50:47,423 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-22 22:50:47,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:50:47 BoogieIcfgContainer [2018-11-22 22:50:47,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:50:47,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:50:47,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:50:47,426 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:50:47,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:50:46" (1/3) ... [2018-11-22 22:50:47,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20867c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:50:47, skipping insertion in model container [2018-11-22 22:50:47,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:50:47" (2/3) ... [2018-11-22 22:50:47,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20867c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:50:47, skipping insertion in model container [2018-11-22 22:50:47,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:50:47" (3/3) ... [2018-11-22 22:50:47,428 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt_true-unreach-call.i [2018-11-22 22:50:47,454 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,454 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,454 WARN L317 ript$VariableManager]: TermVariabe Thread1_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,454 WARN L317 ript$VariableManager]: TermVariabe Thread1_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe Thread2_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe Thread2_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,456 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,457 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,459 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,459 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 22:50:47,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-22 22:50:47,468 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:50:47,475 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 22:50:47,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 22:50:47,512 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:50:47,512 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:50:47,512 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:50:47,513 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:50:47,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:50:47,513 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:50:47,513 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:50:47,513 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:50:47,521 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56places, 53 transitions [2018-11-22 22:50:47,614 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2385 states. [2018-11-22 22:50:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states. [2018-11-22 22:50:47,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:50:47,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:50:47,630 INFO L402 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, 1, 1, 1] [2018-11-22 22:50:47,632 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:50:47,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:50:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1527644630, now seen corresponding path program 1 times [2018-11-22 22:50:47,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:50:47,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:47,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:50:47,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:47,687 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:50:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:50:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:50:47,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:50:47,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-22 22:50:47,810 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:50:47,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 22:50:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:50:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:50:47,823 INFO L87 Difference]: Start difference. First operand 2385 states. Second operand 4 states. [2018-11-22 22:50:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:50:47,917 INFO L93 Difference]: Finished difference Result 2493 states and 8069 transitions. [2018-11-22 22:50:47,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:50:47,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-22 22:50:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:50:47,938 INFO L225 Difference]: With dead ends: 2493 [2018-11-22 22:50:47,938 INFO L226 Difference]: Without dead ends: 1128 [2018-11-22 22:50:47,939 INFO L631 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 [2018-11-22 22:50:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2018-11-22 22:50:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2018-11-22 22:50:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2018-11-22 22:50:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3558 transitions. [2018-11-22 22:50:48,022 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3558 transitions. Word has length 30 [2018-11-22 22:50:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:50:48,022 INFO L480 AbstractCegarLoop]: Abstraction has 1128 states and 3558 transitions. [2018-11-22 22:50:48,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 22:50:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3558 transitions. [2018-11-22 22:50:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-22 22:50:48,025 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:50:48,025 INFO L402 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, 1, 1, 1, 1] [2018-11-22 22:50:48,025 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:50:48,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:50:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1534799274, now seen corresponding path program 1 times [2018-11-22 22:50:48,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:50:48,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:50:48,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,030 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:50:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:50:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:50:48,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:50:48,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:50:48,098 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:50:48,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:50:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:50:48,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:50:48,100 INFO L87 Difference]: Start difference. First operand 1128 states and 3558 transitions. Second operand 5 states. [2018-11-22 22:50:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:50:48,158 INFO L93 Difference]: Finished difference Result 1168 states and 3552 transitions. [2018-11-22 22:50:48,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 22:50:48,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-11-22 22:50:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:50:48,162 INFO L225 Difference]: With dead ends: 1168 [2018-11-22 22:50:48,162 INFO L226 Difference]: Without dead ends: 1044 [2018-11-22 22:50:48,163 INFO L631 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 [2018-11-22 22:50:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2018-11-22 22:50:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2018-11-22 22:50:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2018-11-22 22:50:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3243 transitions. [2018-11-22 22:50:48,184 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3243 transitions. Word has length 31 [2018-11-22 22:50:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:50:48,184 INFO L480 AbstractCegarLoop]: Abstraction has 1044 states and 3243 transitions. [2018-11-22 22:50:48,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:50:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3243 transitions. [2018-11-22 22:50:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-22 22:50:48,186 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:50:48,186 INFO L402 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, 1, 1, 1, 1, 1] [2018-11-22 22:50:48,186 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:50:48,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:50:48,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1935451892, now seen corresponding path program 1 times [2018-11-22 22:50:48,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:50:48,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:50:48,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,193 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:50:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:50:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:50:48,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:50:48,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 22:50:48,275 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:50:48,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 22:50:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 22:50:48,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:50:48,276 INFO L87 Difference]: Start difference. First operand 1044 states and 3243 transitions. Second operand 6 states. [2018-11-22 22:50:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:50:48,411 INFO L93 Difference]: Finished difference Result 820 states and 2379 transitions. [2018-11-22 22:50:48,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 22:50:48,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-11-22 22:50:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:50:48,415 INFO L225 Difference]: With dead ends: 820 [2018-11-22 22:50:48,415 INFO L226 Difference]: Without dead ends: 708 [2018-11-22 22:50:48,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-22 22:50:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2018-11-22 22:50:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2018-11-22 22:50:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2018-11-22 22:50:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 2067 transitions. [2018-11-22 22:50:48,436 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 2067 transitions. Word has length 32 [2018-11-22 22:50:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:50:48,436 INFO L480 AbstractCegarLoop]: Abstraction has 708 states and 2067 transitions. [2018-11-22 22:50:48,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 22:50:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 2067 transitions. [2018-11-22 22:50:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-22 22:50:48,438 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:50:48,438 INFO L402 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, 1, 1, 1, 1, 1, 1] [2018-11-22 22:50:48,438 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:50:48,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:50:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash 794836574, now seen corresponding path program 1 times [2018-11-22 22:50:48,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:50:48,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:50:48,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,441 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:50:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:50:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:50:48,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:50:48,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 22:50:48,513 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:50:48,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 22:50:48,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 22:50:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:50:48,514 INFO L87 Difference]: Start difference. First operand 708 states and 2067 transitions. Second operand 6 states. [2018-11-22 22:50:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:50:48,620 INFO L93 Difference]: Finished difference Result 1172 states and 3451 transitions. [2018-11-22 22:50:48,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 22:50:48,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-11-22 22:50:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:50:48,623 INFO L225 Difference]: With dead ends: 1172 [2018-11-22 22:50:48,624 INFO L226 Difference]: Without dead ends: 656 [2018-11-22 22:50:48,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-22 22:50:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2018-11-22 22:50:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2018-11-22 22:50:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2018-11-22 22:50:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1931 transitions. [2018-11-22 22:50:48,643 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1931 transitions. Word has length 33 [2018-11-22 22:50:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:50:48,644 INFO L480 AbstractCegarLoop]: Abstraction has 656 states and 1931 transitions. [2018-11-22 22:50:48,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 22:50:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1931 transitions. [2018-11-22 22:50:48,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-22 22:50:48,645 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:50:48,646 INFO L402 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, 1, 1, 1, 1, 1, 1] [2018-11-22 22:50:48,646 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:50:48,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:50:48,646 INFO L82 PathProgramCache]: Analyzing trace with hash 690889132, now seen corresponding path program 2 times [2018-11-22 22:50:48,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:50:48,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:50:48,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:50:48,648 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:50:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:50:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:50:48,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:50:48,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-22 22:50:48,782 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:50:48,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 22:50:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 22:50:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:50:48,783 INFO L87 Difference]: Start difference. First operand 656 states and 1931 transitions. Second operand 8 states. [2018-11-22 22:50:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:50:49,057 INFO L93 Difference]: Finished difference Result 912 states and 2699 transitions. [2018-11-22 22:50:49,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-22 22:50:49,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-22 22:50:49,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:50:49,058 INFO L225 Difference]: With dead ends: 912 [2018-11-22 22:50:49,059 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 22:50:49,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2018-11-22 22:50:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 22:50:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 22:50:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 22:50:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 22:50:49,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-11-22 22:50:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:50:49,063 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:50:49,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 22:50:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:50:49,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 22:50:49,067 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-22 22:50:49,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:50:49 BasicIcfg [2018-11-22 22:50:49,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:50:49,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:50:49,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:50:49,070 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:50:49,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:50:47" (3/4) ... [2018-11-22 22:50:49,074 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 22:50:49,081 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-11-22 22:50:49,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-11-22 22:50:49,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-11-22 22:50:49,087 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-22 22:50:49,087 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 22:50:49,143 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ff7700d5-a5ff-4266-b230-043613f63bc8/bin-2019/utaipan/witness.graphml [2018-11-22 22:50:49,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:50:49,145 INFO L168 Benchmark]: Toolchain (without parser) took 2487.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 228.6 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,146 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:50:49,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.59 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,147 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,148 INFO L168 Benchmark]: RCFGBuilder took 327.08 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,148 INFO L168 Benchmark]: TraceAbstraction took 1645.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.0 MB in the end (delta: 207.7 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,148 INFO L168 Benchmark]: Witness Printer took 74.74 ms. Allocated memory is still 1.2 GB. Free memory was 884.0 MB in the beginning and 1.1 GB in the end (delta: -250.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:50:49,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 381.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -167.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.59 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.65 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 327.08 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1645.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.0 MB in the end (delta: 207.7 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.74 ms. Allocated memory is still 1.2 GB. Free memory was 884.0 MB in the beginning and 1.1 GB in the end (delta: -250.9 MB). Peak memory consumption was 12.3 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 7 procedures, 71 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 288 SDtfs, 385 SDslu, 737 SDs, 0 SdLazy, 91 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2385occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 12350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...