./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/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 90b9159ba2a58602ff1e9c0acff32948b8aee8f8 ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:31:25,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:31:25,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:31:25,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:31:25,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:31:25,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:31:25,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:31:25,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:31:25,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:31:25,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:31:25,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:31:25,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:31:25,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:31:25,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:31:25,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:31:25,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:31:25,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:31:25,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:31:25,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:31:25,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:31:25,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:31:25,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:31:25,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:31:25,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:31:25,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:31:25,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:31:25,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:31:25,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:31:25,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:31:25,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:31:25,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:31:25,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:31:25,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:31:25,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:31:25,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:31:25,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:31:25,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:31:25,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:31:25,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:31:25,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:31:25,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:31:25,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:31:25,365 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:31:25,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:31:25,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:31:25,375 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:31:25,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:31:25,376 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:31:25,376 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:31:25,376 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:31:25,376 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:31:25,376 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:31:25,377 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:31:25,377 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:31:25,377 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:31:25,377 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:31:25,378 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:31:25,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:31:25,379 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:31:25,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:31:25,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:31:25,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:31:25,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:31:25,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:31:25,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:31:25,381 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:31:25,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:31:25,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:31:25,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:31:25,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:31:25,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:31:25,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:31:25,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:31:25,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:31:25,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:31:25,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:31:25,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:31:25,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:31:25,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:31:25,384 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/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/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 -> 90b9159ba2a58602ff1e9c0acff32948b8aee8f8 [2019-11-26 02:31:25,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:31:25,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:31:25,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:31:25,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:31:25,568 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:31:25,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2019-11-26 02:31:25,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/data/12f871fc5/2184d3147dca45e69200f1b1c1467f93/FLAGb2706aac2 [2019-11-26 02:31:26,004 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:31:26,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2019-11-26 02:31:26,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/data/12f871fc5/2184d3147dca45e69200f1b1c1467f93/FLAGb2706aac2 [2019-11-26 02:31:26,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/data/12f871fc5/2184d3147dca45e69200f1b1c1467f93 [2019-11-26 02:31:26,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:31:26,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:31:26,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:31:26,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:31:26,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:31:26,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407c053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26, skipping insertion in model container [2019-11-26 02:31:26,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:31:26,057 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:31:26,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:31:26,253 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:31:26,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:31:26,351 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:31:26,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26 WrapperNode [2019-11-26 02:31:26,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:31:26,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:31:26,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:31:26,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:31:26,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:31:26,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:31:26,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:31:26,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:31:26,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... [2019-11-26 02:31:26,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:31:26,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:31:26,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:31:26,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:31:26,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/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 [2019-11-26 02:31:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:31:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:31:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:31:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:31:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:31:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:31:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:31:26,677 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:31:26,678 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:31:26,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:31:26 BoogieIcfgContainer [2019-11-26 02:31:26,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:31:26,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:31:26,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:31:26,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:31:26,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:31:26" (1/3) ... [2019-11-26 02:31:26,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2740d00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:31:26, skipping insertion in model container [2019-11-26 02:31:26,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:31:26" (2/3) ... [2019-11-26 02:31:26,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2740d00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:31:26, skipping insertion in model container [2019-11-26 02:31:26,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:31:26" (3/3) ... [2019-11-26 02:31:26,684 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2019-11-26 02:31:26,693 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:31:26,698 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:31:26,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:31:26,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:31:26,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:31:26,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:31:26,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:31:26,732 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:31:26,732 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:31:26,732 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:31:26,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:31:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-11-26 02:31:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:31:26,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:26,761 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:31:26,761 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:26,766 INFO L82 PathProgramCache]: Analyzing trace with hash 45329, now seen corresponding path program 1 times [2019-11-26 02:31:26,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:31:26,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654288683] [2019-11-26 02:31:26,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:31:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:31:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:26,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654288683] [2019-11-26 02:31:26,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:31:26,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:31:26,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811471407] [2019-11-26 02:31:26,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:31:26,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:31:26,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:31:26,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:31:26,927 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-11-26 02:31:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:26,944 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-26 02:31:26,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:31:26,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:31:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:26,950 INFO L225 Difference]: With dead ends: 8 [2019-11-26 02:31:26,950 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:31:26,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:31:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:31:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:31:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:31:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:31:26,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-26 02:31:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:26,969 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:31:26,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:31:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:31:26,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:31:26,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:31:26,981 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:31:26,982 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:31:26,982 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-11-26 02:31:26,983 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-26 02:31:26,983 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2019-11-26 02:31:26,983 INFO L447 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: true [2019-11-26 02:31:26,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:31:26 BoogieIcfgContainer [2019-11-26 02:31:26,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:31:26,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:31:26,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:31:26,988 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:31:26,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:31:26" (3/4) ... [2019-11-26 02:31:26,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:31:26,999 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:31:26,999 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:31:26,999 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:31:27,029 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_79689b0c-1c5c-4bbb-afaa-8f5cf3aef1c3/bin/utaipan/witness.graphml [2019-11-26 02:31:27,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:31:27,031 INFO L168 Benchmark]: Toolchain (without parser) took 1009.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 550.3 kB. Max. memory is 11.5 GB. [2019-11-26 02:31:27,032 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:27,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:27,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:27,033 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:27,034 INFO L168 Benchmark]: RCFGBuilder took 271.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:27,034 INFO L168 Benchmark]: TraceAbstraction took 308.40 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:27,035 INFO L168 Benchmark]: Witness Printer took 41.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:27,038 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -201.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 271.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 308.40 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Result: SAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...