./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/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 f77846273a11bddcefa25041f1655a63cdf01e31 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:34:00,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:34:00,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:34:00,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:34:00,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:34:00,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:34:00,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:34:00,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:34:00,524 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:34:00,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:34:00,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:34:00,525 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:34:00,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:34:00,526 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:34:00,527 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:34:00,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:34:00,528 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:34:00,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:34:00,530 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:34:00,530 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:34:00,531 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:34:00,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:34:00,533 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:34:00,533 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:34:00,533 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:34:00,533 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:34:00,534 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:34:00,534 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:34:00,535 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:34:00,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:34:00,535 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:34:00,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:34:00,536 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:34:00,536 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:34:00,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:34:00,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:34:00,537 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:34:00,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:34:00,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:34:00,544 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:34:00,544 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:34:00,545 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:34:00,545 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:34:00,546 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:34:00,546 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:34:00,547 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:34:00,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:34:00,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:34:00,548 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:34:00,548 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_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/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 -> f77846273a11bddcefa25041f1655a63cdf01e31 [2018-12-09 19:34:00,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:34:00,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:34:00,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:34:00,574 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:34:00,574 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:34:00,574 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/../../sv-benchmarks/c/pthread-lit/qw2004_false-unreach-call.i [2018-12-09 19:34:00,609 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/data/ab59833c5/042e19787302443898d5c3df0ee99c93/FLAGa03b30dc2 [2018-12-09 19:34:01,063 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:34:01,064 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/sv-benchmarks/c/pthread-lit/qw2004_false-unreach-call.i [2018-12-09 19:34:01,072 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/data/ab59833c5/042e19787302443898d5c3df0ee99c93/FLAGa03b30dc2 [2018-12-09 19:34:01,083 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/data/ab59833c5/042e19787302443898d5c3df0ee99c93 [2018-12-09 19:34:01,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:34:01,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:34:01,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:34:01,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:34:01,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:34:01,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b9a0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01, skipping insertion in model container [2018-12-09 19:34:01,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:34:01,120 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:34:01,294 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:34:01,301 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:34:01,360 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:34:01,389 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:34:01,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01 WrapperNode [2018-12-09 19:34:01,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:34:01,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:34:01,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:34:01,390 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:34:01,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:34:01,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:34:01,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:34:01,417 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:34:01,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... [2018-12-09 19:34:01,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:34:01,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:34:01,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:34:01,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:34:01,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/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 [2018-12-09 19:34:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:34:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2018-12-09 19:34:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2018-12-09 19:34:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:34:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 19:34:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:34:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 19:34:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:34:01,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:34:01,468 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 19:34:01,645 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:34:01,645 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-09 19:34:01,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:01 BoogieIcfgContainer [2018-12-09 19:34:01,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:34:01,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:34:01,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:34:01,649 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:34:01,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:34:01" (1/3) ... [2018-12-09 19:34:01,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1834a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:01, skipping insertion in model container [2018-12-09 19:34:01,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:01" (2/3) ... [2018-12-09 19:34:01,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1834a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:01, skipping insertion in model container [2018-12-09 19:34:01,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:01" (3/3) ... [2018-12-09 19:34:01,652 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004_false-unreach-call.i [2018-12-09 19:34:01,670 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,670 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,670 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,670 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,670 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,671 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,672 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,672 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,672 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,672 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,672 WARN L317 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,673 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,673 WARN L317 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:34:01,675 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 19:34:01,675 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:34:01,680 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:34:01,690 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:34:01,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:34:01,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:34:01,707 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:34:01,707 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:34:01,707 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:34:01,707 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:34:01,708 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:34:01,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:34:01,716 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75places, 78 transitions [2018-12-09 19:34:01,742 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 771 states. [2018-12-09 19:34:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2018-12-09 19:34:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 19:34:01,755 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:01,756 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, 1] [2018-12-09 19:34:01,757 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:01,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:01,761 INFO L82 PathProgramCache]: Analyzing trace with hash -734906715, now seen corresponding path program 1 times [2018-12-09 19:34:01,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:01,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:01,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:01,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:01,803 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:01,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:01,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:34:01,884 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:01,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:34:01,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:34:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:01,899 INFO L87 Difference]: Start difference. First operand 771 states. Second operand 3 states. [2018-12-09 19:34:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:01,932 INFO L93 Difference]: Finished difference Result 1297 states and 2629 transitions. [2018-12-09 19:34:01,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:34:01,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-12-09 19:34:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:01,943 INFO L225 Difference]: With dead ends: 1297 [2018-12-09 19:34:01,943 INFO L226 Difference]: Without dead ends: 617 [2018-12-09 19:34:01,944 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-12-09 19:34:01,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 409. [2018-12-09 19:34:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-12-09 19:34:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 801 transitions. [2018-12-09 19:34:01,978 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 801 transitions. Word has length 34 [2018-12-09 19:34:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:01,978 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 801 transitions. [2018-12-09 19:34:01,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:34:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 801 transitions. [2018-12-09 19:34:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 19:34:01,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:01,980 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, 1, 1] [2018-12-09 19:34:01,980 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:01,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:01,980 INFO L82 PathProgramCache]: Analyzing trace with hash 324356338, now seen corresponding path program 1 times [2018-12-09 19:34:01,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:01,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:01,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:01,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:01,983 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:02,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:02,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:34:02,030 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:02,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:34:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:34:02,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:34:02,031 INFO L87 Difference]: Start difference. First operand 409 states and 801 transitions. Second operand 5 states. [2018-12-09 19:34:02,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:02,068 INFO L93 Difference]: Finished difference Result 388 states and 751 transitions. [2018-12-09 19:34:02,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:34:02,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 19:34:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:02,070 INFO L225 Difference]: With dead ends: 388 [2018-12-09 19:34:02,070 INFO L226 Difference]: Without dead ends: 334 [2018-12-09 19:34:02,070 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:34:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-12-09 19:34:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-12-09 19:34:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-12-09 19:34:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 646 transitions. [2018-12-09 19:34:02,077 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 646 transitions. Word has length 35 [2018-12-09 19:34:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:02,078 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 646 transitions. [2018-12-09 19:34:02,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:34:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 646 transitions. [2018-12-09 19:34:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-09 19:34:02,079 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:02,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:34:02,079 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:02,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash 328266601, now seen corresponding path program 1 times [2018-12-09 19:34:02,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,082 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:02,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:02,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:34:02,115 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:02,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:34:02,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:34:02,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:02,116 INFO L87 Difference]: Start difference. First operand 334 states and 646 transitions. Second operand 3 states. [2018-12-09 19:34:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:02,127 INFO L93 Difference]: Finished difference Result 351 states and 663 transitions. [2018-12-09 19:34:02,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:34:02,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-12-09 19:34:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:02,128 INFO L225 Difference]: With dead ends: 351 [2018-12-09 19:34:02,128 INFO L226 Difference]: Without dead ends: 334 [2018-12-09 19:34:02,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-12-09 19:34:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-12-09 19:34:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-12-09 19:34:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 629 transitions. [2018-12-09 19:34:02,133 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 629 transitions. Word has length 48 [2018-12-09 19:34:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:02,134 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 629 transitions. [2018-12-09 19:34:02,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:34:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 629 transitions. [2018-12-09 19:34:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 19:34:02,135 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:02,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:34:02,135 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:02,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:02,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1333971684, now seen corresponding path program 1 times [2018-12-09 19:34:02,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:02,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:02,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,137 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:02,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:02,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:34:02,169 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:02,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:34:02,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:34:02,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:34:02,169 INFO L87 Difference]: Start difference. First operand 334 states and 629 transitions. Second operand 5 states. [2018-12-09 19:34:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:02,208 INFO L93 Difference]: Finished difference Result 414 states and 768 transitions. [2018-12-09 19:34:02,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:34:02,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2018-12-09 19:34:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:02,210 INFO L225 Difference]: With dead ends: 414 [2018-12-09 19:34:02,210 INFO L226 Difference]: Without dead ends: 318 [2018-12-09 19:34:02,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:34:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-12-09 19:34:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2018-12-09 19:34:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-12-09 19:34:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 582 transitions. [2018-12-09 19:34:02,215 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 582 transitions. Word has length 49 [2018-12-09 19:34:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:02,216 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 582 transitions. [2018-12-09 19:34:02,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:34:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 582 transitions. [2018-12-09 19:34:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 19:34:02,217 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:02,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:34:02,217 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:02,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1092765015, now seen corresponding path program 1 times [2018-12-09 19:34:02,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:02,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:02,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,221 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:02,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:02,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:34:02,252 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:02,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:34:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:34:02,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:02,252 INFO L87 Difference]: Start difference. First operand 318 states and 582 transitions. Second operand 3 states. [2018-12-09 19:34:02,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:02,258 INFO L93 Difference]: Finished difference Result 318 states and 566 transitions. [2018-12-09 19:34:02,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:34:02,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-12-09 19:34:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:02,260 INFO L225 Difference]: With dead ends: 318 [2018-12-09 19:34:02,260 INFO L226 Difference]: Without dead ends: 190 [2018-12-09 19:34:02,260 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:34:02,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-12-09 19:34:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-12-09 19:34:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-12-09 19:34:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 326 transitions. [2018-12-09 19:34:02,265 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 326 transitions. Word has length 50 [2018-12-09 19:34:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:02,265 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 326 transitions. [2018-12-09 19:34:02,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:34:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 326 transitions. [2018-12-09 19:34:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 19:34:02,266 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:02,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:34:02,266 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:02,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -173045851, now seen corresponding path program 2 times [2018-12-09 19:34:02,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:34:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,269 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:34:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:34:02,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:34:02,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 19:34:02,339 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:34:02,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:34:02,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:34:02,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:34:02,340 INFO L87 Difference]: Start difference. First operand 190 states and 326 transitions. Second operand 8 states. [2018-12-09 19:34:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:34:02,418 INFO L93 Difference]: Finished difference Result 232 states and 397 transitions. [2018-12-09 19:34:02,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:34:02,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-12-09 19:34:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:34:02,419 INFO L225 Difference]: With dead ends: 232 [2018-12-09 19:34:02,419 INFO L226 Difference]: Without dead ends: 148 [2018-12-09 19:34:02,420 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-12-09 19:34:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-12-09 19:34:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-12-09 19:34:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-12-09 19:34:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 242 transitions. [2018-12-09 19:34:02,423 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 242 transitions. Word has length 50 [2018-12-09 19:34:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:34:02,424 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 242 transitions. [2018-12-09 19:34:02,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:34:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 242 transitions. [2018-12-09 19:34:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 19:34:02,425 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:34:02,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:34:02,425 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:34:02,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:34:02,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2106976045, now seen corresponding path program 3 times [2018-12-09 19:34:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:34:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:34:02,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:34:02,428 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:34:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:34:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:34:02,462 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:34:02,495 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 19:34:02,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:34:02 BasicIcfg [2018-12-09 19:34:02,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:34:02,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:34:02,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:34:02,497 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:34:02,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:01" (3/4) ... [2018-12-09 19:34:02,499 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 19:34:02,535 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fc7814e6-ebd1-40d0-adb3-bc7ab7ca58e7/bin-2019/utaipan/witness.graphml [2018-12-09 19:34:02,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:34:02,536 INFO L168 Benchmark]: Toolchain (without parser) took 1450.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.0 MB in the beginning and 928.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 155.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,536 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:34:02,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:34:02,537 INFO L168 Benchmark]: Boogie Preprocessor took 13.68 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,537 INFO L168 Benchmark]: RCFGBuilder took 215.32 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: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,538 INFO L168 Benchmark]: TraceAbstraction took 850.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.2 MB in the end (delta: 149.5 MB). Peak memory consumption was 149.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,538 INFO L168 Benchmark]: Witness Printer took 38.54 ms. Allocated memory is still 1.2 GB. Free memory was 935.2 MB in the beginning and 928.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-09 19:34:02,539 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.68 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 215.32 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: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 850.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 935.2 MB in the end (delta: 149.5 MB). Peak memory consumption was 149.5 MB. Max. memory is 11.5 GB. * Witness Printer took 38.54 ms. Allocated memory is still 1.2 GB. Free memory was 935.2 MB in the beginning and 928.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 653]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L660] -1 volatile int stoppingFlag; VAL [stoppingFlag=0] [L661] -1 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L662] -1 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L663] -1 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L703] -1 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L704] -1 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] -1 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L706] -1 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L707] -1 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L708] FCALL, FORK -1 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L687] -1 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L665] COND FALSE -1 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L696] 0 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L680] 0 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L674] 0 pendingIo-- [L675] 0 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L668] -1 pendingIo = pendingIo + 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L670] -1 return 0; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L688] -1 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L689] COND TRUE -1 status == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L677] 0 return tmp; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L681] 0 pending = dec() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L682] COND TRUE 0 pending == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L683] 0 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L699] 0 stopped = 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L652] COND TRUE -1 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L653] -1 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 482 SDtfs, 265 SDslu, 851 SDs, 0 SdLazy, 96 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=771occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 208 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 22264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...