./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 511c6dfc7d5bd28721d42de204124e2d16d0e544 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 22:42:50,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:42:50,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:42:50,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:42:50,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:42:50,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:42:50,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:42:50,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:42:50,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:42:50,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:42:50,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:42:50,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:42:50,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:42:50,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:42:50,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:42:50,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:42:50,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:42:50,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:42:50,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:42:50,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:42:50,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:42:50,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:42:50,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:42:50,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:42:50,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:42:50,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:42:50,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:42:50,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:42:50,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:42:50,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:42:50,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:42:50,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:42:50,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:42:50,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:42:50,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:42:50,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:42:50,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:42:50,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:42:50,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:42:50,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:42:50,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:42:50,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:42:50,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:42:50,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:42:50,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:42:50,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:42:50,624 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:42:50,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:42:50,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:42:50,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:42:50,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:42:50,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:42:50,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:42:50,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:42:50,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:42:50,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:42:50,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:42:50,627 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:42:50,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:42:50,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:42:50,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:42:50,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:42:50,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:42:50,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:42:50,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:42:50,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:42:50,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:42:50,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:42:50,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:42:50,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:42:50,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer 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 -> Automizer 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 -> 511c6dfc7d5bd28721d42de204124e2d16d0e544 [2019-11-15 22:42:50,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:42:50,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:42:50,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:42:50,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:42:50,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:42:50,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/../../sv-benchmarks/c/pthread-lit/qw2004-2.i [2019-11-15 22:42:50,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/data/2eed3c507/340b0e3233314d0cac84013216213ba5/FLAG526fa8154 [2019-11-15 22:42:51,276 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:42:51,277 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/sv-benchmarks/c/pthread-lit/qw2004-2.i [2019-11-15 22:42:51,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/data/2eed3c507/340b0e3233314d0cac84013216213ba5/FLAG526fa8154 [2019-11-15 22:42:51,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/data/2eed3c507/340b0e3233314d0cac84013216213ba5 [2019-11-15 22:42:51,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:42:51,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:42:51,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:51,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:42:51,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:42:51,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:51" (1/1) ... [2019-11-15 22:42:51,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b053f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:51, skipping insertion in model container [2019-11-15 22:42:51,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:51" (1/1) ... [2019-11-15 22:42:51,544 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:42:51,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:42:52,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:52,211 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:42:52,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:52,375 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:42:52,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52 WrapperNode [2019-11-15 22:42:52,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:52,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:52,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:42:52,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:42:52,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:52,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:42:52,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:42:52,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:42:52,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... [2019-11-15 22:42:52,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:42:52,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:42:52,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:42:52,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:42:52,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/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 [2019-11-15 22:42:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2019-11-15 22:42:52,533 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2019-11-15 22:42:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:42:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 22:42:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:42:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:42:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 22:42:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:42:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:42:52,536 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:42:52,916 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:42:52,917 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 22:42:52,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:52 BoogieIcfgContainer [2019-11-15 22:42:52,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:42:52,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:42:52,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:42:52,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:42:52,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:42:51" (1/3) ... [2019-11-15 22:42:52,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244bed7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:42:52, skipping insertion in model container [2019-11-15 22:42:52,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:52" (2/3) ... [2019-11-15 22:42:52,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244bed7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:42:52, skipping insertion in model container [2019-11-15 22:42:52,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:52" (3/3) ... [2019-11-15 22:42:52,927 INFO L109 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2019-11-15 22:42:52,965 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,965 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,965 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,965 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,966 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,966 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,966 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,966 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,967 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,967 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,967 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,967 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,968 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,968 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,969 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_BCSP_IoDecrement_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,969 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,969 WARN L315 ript$VariableManager]: TermVariabe Thread0_BCSP_PnpStop_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,970 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,970 WARN L315 ript$VariableManager]: TermVariabe |Thread0_BCSP_PnpStop_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:42:52,980 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:42:52,980 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:42:52,988 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:42:53,001 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:42:53,027 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:42:53,027 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:42:53,027 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:42:53,028 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:42:53,028 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:42:53,028 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:42:53,028 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:42:53,028 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:42:53,038 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 78 transitions [2019-11-15 22:42:53,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 771 states. [2019-11-15 22:42:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2019-11-15 22:42:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 22:42:53,124 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:53,125 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:53,127 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash 691458174, now seen corresponding path program 1 times [2019-11-15 22:42:53,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:53,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654181219] [2019-11-15 22:42:53,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:53,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654181219] [2019-11-15 22:42:53,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:53,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:42:53,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222244917] [2019-11-15 22:42:53,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:42:53,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:42:53,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:53,414 INFO L87 Difference]: Start difference. First operand 771 states. Second operand 3 states. [2019-11-15 22:42:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:53,504 INFO L93 Difference]: Finished difference Result 1297 states and 2629 transitions. [2019-11-15 22:42:53,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:42:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-15 22:42:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:53,531 INFO L225 Difference]: With dead ends: 1297 [2019-11-15 22:42:53,531 INFO L226 Difference]: Without dead ends: 617 [2019-11-15 22:42:53,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-11-15 22:42:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 409. [2019-11-15 22:42:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2019-11-15 22:42:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 801 transitions. [2019-11-15 22:42:53,622 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 801 transitions. Word has length 34 [2019-11-15 22:42:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:53,623 INFO L462 AbstractCegarLoop]: Abstraction has 409 states and 801 transitions. [2019-11-15 22:42:53,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:42:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 801 transitions. [2019-11-15 22:42:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 22:42:53,628 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:53,629 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:53,629 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1442389764, now seen corresponding path program 1 times [2019-11-15 22:42:53,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:53,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396541075] [2019-11-15 22:42:53,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:53,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396541075] [2019-11-15 22:42:53,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:53,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:42:53,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669115571] [2019-11-15 22:42:53,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:42:53,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:53,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:42:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:42:53,814 INFO L87 Difference]: Start difference. First operand 409 states and 801 transitions. Second operand 5 states. [2019-11-15 22:42:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:53,906 INFO L93 Difference]: Finished difference Result 388 states and 751 transitions. [2019-11-15 22:42:53,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:42:53,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-15 22:42:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:53,911 INFO L225 Difference]: With dead ends: 388 [2019-11-15 22:42:53,911 INFO L226 Difference]: Without dead ends: 334 [2019-11-15 22:42:53,912 INFO L600 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 [2019-11-15 22:42:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-11-15 22:42:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2019-11-15 22:42:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2019-11-15 22:42:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 646 transitions. [2019-11-15 22:42:53,958 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 646 transitions. Word has length 35 [2019-11-15 22:42:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:53,959 INFO L462 AbstractCegarLoop]: Abstraction has 334 states and 646 transitions. [2019-11-15 22:42:53,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:42:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 646 transitions. [2019-11-15 22:42:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-15 22:42:53,964 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:53,964 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:53,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2114791574, now seen corresponding path program 1 times [2019-11-15 22:42:53,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:53,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119373011] [2019-11-15 22:42:53,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:53,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:54,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119373011] [2019-11-15 22:42:54,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:54,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:42:54,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667791045] [2019-11-15 22:42:54,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:42:54,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:54,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:42:54,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:54,053 INFO L87 Difference]: Start difference. First operand 334 states and 646 transitions. Second operand 3 states. [2019-11-15 22:42:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:54,064 INFO L93 Difference]: Finished difference Result 351 states and 663 transitions. [2019-11-15 22:42:54,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:42:54,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-11-15 22:42:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:54,068 INFO L225 Difference]: With dead ends: 351 [2019-11-15 22:42:54,068 INFO L226 Difference]: Without dead ends: 334 [2019-11-15 22:42:54,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-11-15 22:42:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2019-11-15 22:42:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2019-11-15 22:42:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 629 transitions. [2019-11-15 22:42:54,084 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 629 transitions. Word has length 48 [2019-11-15 22:42:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:54,085 INFO L462 AbstractCegarLoop]: Abstraction has 334 states and 629 transitions. [2019-11-15 22:42:54,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:42:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 629 transitions. [2019-11-15 22:42:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-15 22:42:54,088 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:54,089 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:54,089 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 387107471, now seen corresponding path program 1 times [2019-11-15 22:42:54,090 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:54,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466759873] [2019-11-15 22:42:54,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:54,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466759873] [2019-11-15 22:42:54,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:54,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:42:54,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522860519] [2019-11-15 22:42:54,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:42:54,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:42:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:42:54,186 INFO L87 Difference]: Start difference. First operand 334 states and 629 transitions. Second operand 5 states. [2019-11-15 22:42:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:54,264 INFO L93 Difference]: Finished difference Result 414 states and 768 transitions. [2019-11-15 22:42:54,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:42:54,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2019-11-15 22:42:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:54,268 INFO L225 Difference]: With dead ends: 414 [2019-11-15 22:42:54,268 INFO L226 Difference]: Without dead ends: 318 [2019-11-15 22:42:54,269 INFO L600 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 [2019-11-15 22:42:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-11-15 22:42:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2019-11-15 22:42:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-11-15 22:42:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 582 transitions. [2019-11-15 22:42:54,282 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 582 transitions. Word has length 49 [2019-11-15 22:42:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:54,282 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 582 transitions. [2019-11-15 22:42:54,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:42:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 582 transitions. [2019-11-15 22:42:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 22:42:54,285 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:54,285 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:54,286 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:54,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:54,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1646165983, now seen corresponding path program 1 times [2019-11-15 22:42:54,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:54,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137638605] [2019-11-15 22:42:54,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:54,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137638605] [2019-11-15 22:42:54,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:54,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:42:54,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92067431] [2019-11-15 22:42:54,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:42:54,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:54,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:42:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:54,336 INFO L87 Difference]: Start difference. First operand 318 states and 582 transitions. Second operand 3 states. [2019-11-15 22:42:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:54,348 INFO L93 Difference]: Finished difference Result 318 states and 566 transitions. [2019-11-15 22:42:54,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:42:54,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-15 22:42:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:54,350 INFO L225 Difference]: With dead ends: 318 [2019-11-15 22:42:54,351 INFO L226 Difference]: Without dead ends: 190 [2019-11-15 22:42:54,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:42:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-11-15 22:42:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2019-11-15 22:42:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-11-15 22:42:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 326 transitions. [2019-11-15 22:42:54,358 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 326 transitions. Word has length 50 [2019-11-15 22:42:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:54,358 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 326 transitions. [2019-11-15 22:42:54,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:42:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 326 transitions. [2019-11-15 22:42:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 22:42:54,360 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:54,360 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:54,361 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1568144407, now seen corresponding path program 2 times [2019-11-15 22:42:54,361 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:54,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213049958] [2019-11-15 22:42:54,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:54,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213049958] [2019-11-15 22:42:54,508 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:54,508 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:42:54,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502447495] [2019-11-15 22:42:54,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:42:54,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:42:54,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:42:54,510 INFO L87 Difference]: Start difference. First operand 190 states and 326 transitions. Second operand 8 states. [2019-11-15 22:42:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:54,731 INFO L93 Difference]: Finished difference Result 232 states and 397 transitions. [2019-11-15 22:42:54,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:42:54,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2019-11-15 22:42:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:54,734 INFO L225 Difference]: With dead ends: 232 [2019-11-15 22:42:54,734 INFO L226 Difference]: Without dead ends: 148 [2019-11-15 22:42:54,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:42:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-15 22:42:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-11-15 22:42:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-15 22:42:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 242 transitions. [2019-11-15 22:42:54,742 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 242 transitions. Word has length 50 [2019-11-15 22:42:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:54,742 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 242 transitions. [2019-11-15 22:42:54,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:42:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 242 transitions. [2019-11-15 22:42:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 22:42:54,744 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:54,744 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:54,745 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:42:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -473380671, now seen corresponding path program 3 times [2019-11-15 22:42:54,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:54,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440989774] [2019-11-15 22:42:54,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:54,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:54,860 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:42:54,860 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:42:54,950 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 22:42:54,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:42:54 BasicIcfg [2019-11-15 22:42:54,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:42:54,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:42:54,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:42:54,954 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:42:54,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:52" (3/4) ... [2019-11-15 22:42:54,957 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:42:55,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_042e37be-36d0-4c94-acfe-4bbd79098891/bin/uautomizer/witness.graphml [2019-11-15 22:42:55,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:42:55,083 INFO L168 Benchmark]: Toolchain (without parser) took 3564.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.4 MB in the beginning and 906.3 MB in the end (delta: 33.0 MB). Peak memory consumption was 162.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,084 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. [2019-11-15 22:42:55,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 856.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:42:55,086 INFO L168 Benchmark]: Boogie Preprocessor took 34.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:42:55,086 INFO L168 Benchmark]: RCFGBuilder took 450.90 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,087 INFO L168 Benchmark]: TraceAbstraction took 2032.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,087 INFO L168 Benchmark]: Witness Printer took 128.39 ms. Allocated memory is still 1.2 GB. Free memory was 913.3 MB in the beginning and 906.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,096 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 856.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.93 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 34.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 450.90 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2032.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 147.6 MB). Peak memory consumption was 147.6 MB. Max. memory is 11.5 GB. * Witness Printer took 128.39 ms. Allocated memory is still 1.2 GB. Free memory was 913.3 MB in the beginning and 906.3 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: 676]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L684] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L685] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L686] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L726] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L727] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L728] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L729] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L730] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L731] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L710] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L688] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L719] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L703] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L697] 1 pendingIo-- [L698] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L691] 0 pendingIo = pendingIo + 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L693] 0 return 0; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L711] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L712] COND TRUE 0 status == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L700] 1 return tmp; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L704] 1 pending = dec() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L705] COND TRUE 1 pending == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L706] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L722] 1 stopped = 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L675] COND TRUE 0 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L676] 0 __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. Result: UNSAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 482 SDtfs, 265 SDslu, 851 SDs, 0 SdLazy, 96 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s 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 DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 208 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 22366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 incorrect! Received shutdown request...