./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/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 58bdd2dd6f7f4bfbe6fbaedc8a62c157487fbf5c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:18:57,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:18:57,655 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:18:57,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:18:57,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:18:57,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:18:57,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:18:57,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:18:57,667 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:18:57,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:18:57,668 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:18:57,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:18:57,669 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:18:57,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:18:57,671 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:18:57,671 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:18:57,672 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:18:57,673 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:18:57,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:18:57,675 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:18:57,676 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:18:57,677 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:18:57,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:18:57,678 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:18:57,679 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:18:57,679 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:18:57,680 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:18:57,680 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:18:57,681 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:18:57,682 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:18:57,682 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:18:57,682 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:18:57,683 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:18:57,683 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:18:57,683 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:18:57,684 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:18:57,684 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 23:18:57,694 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:18:57,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:18:57,695 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:18:57,695 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 23:18:57,696 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 23:18:57,696 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 23:18:57,697 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 23:18:57,697 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 23:18:57,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:18:57,697 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:18:57,698 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:18:57,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:18:57,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:18:57,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:18:57,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 23:18:57,700 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_bbeca397-c290-45f8-afd4-54b889966a3b/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 -> 58bdd2dd6f7f4bfbe6fbaedc8a62c157487fbf5c [2018-11-22 23:18:57,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:18:57,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:18:57,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:18:57,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:18:57,737 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:18:57,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/../../sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i [2018-11-22 23:18:57,781 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/data/b5159923d/7369edeb084142dd879fd92a7c8192f1/FLAG140da7566 [2018-11-22 23:18:58,154 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:18:58,155 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/sv-benchmarks/c/pthread-ext/17_szymanski_true-unreach-call.i [2018-11-22 23:18:58,161 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/data/b5159923d/7369edeb084142dd879fd92a7c8192f1/FLAG140da7566 [2018-11-22 23:18:58,169 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/data/b5159923d/7369edeb084142dd879fd92a7c8192f1 [2018-11-22 23:18:58,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:18:58,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:18:58,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:58,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:18:58,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:18:58,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44746f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58, skipping insertion in model container [2018-11-22 23:18:58,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:18:58,210 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:18:58,417 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:58,425 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:18:58,500 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:18:58,540 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:18:58,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58 WrapperNode [2018-11-22 23:18:58,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:18:58,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:58,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:18:58,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:18:58,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:18:58,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:18:58,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:18:58,574 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:18:58,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... [2018-11-22 23:18:58,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:18:58,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:18:58,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:18:58,596 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:18:58,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:18:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:18:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-22 23:18:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-22 23:18:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 23:18:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:18:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:18:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:18:58,637 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-22 23:18:58,838 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:18:58,838 INFO L280 CfgBuilder]: Removed 16 assue(true) statements. [2018-11-22 23:18:58,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:58 BoogieIcfgContainer [2018-11-22 23:18:58,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:18:58,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:18:58,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:18:58,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:18:58,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:58" (1/3) ... [2018-11-22 23:18:58,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44656399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:58, skipping insertion in model container [2018-11-22 23:18:58,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:58" (2/3) ... [2018-11-22 23:18:58,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44656399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:18:58, skipping insertion in model container [2018-11-22 23:18:58,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:58" (3/3) ... [2018-11-22 23:18:58,842 INFO L112 eAbstractionObserver]: Analyzing ICFG 17_szymanski_true-unreach-call.i [2018-11-22 23:18:58,859 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,860 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,860 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,860 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,860 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,860 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-22 23:18:58,869 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-22 23:18:58,869 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:18:58,874 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-22 23:18:58,882 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-22 23:18:58,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:18:58,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:18:58,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:18:58,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:18:58,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:18:58,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:18:58,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:18:58,898 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:18:58,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58places, 80 transitions [2018-11-22 23:18:58,931 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2018-11-22 23:18:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2018-11-22 23:18:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 23:18:58,942 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:58,943 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] [2018-11-22 23:18:58,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:58,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1530483626, now seen corresponding path program 1 times [2018-11-22 23:18:58,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:58,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:58,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:58,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:58,986 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:18:59,036 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 23:18:59,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 23:18:59,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 23:18:59,049 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2018-11-22 23:18:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,069 INFO L93 Difference]: Finished difference Result 330 states and 830 transitions. [2018-11-22 23:18:59,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 23:18:59,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-22 23:18:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,082 INFO L225 Difference]: With dead ends: 330 [2018-11-22 23:18:59,082 INFO L226 Difference]: Without dead ends: 330 [2018-11-22 23:18:59,083 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 23:18:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-11-22 23:18:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2018-11-22 23:18:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-11-22 23:18:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 830 transitions. [2018-11-22 23:18:59,123 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 830 transitions. Word has length 21 [2018-11-22 23:18:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,123 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 830 transitions. [2018-11-22 23:18:59,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 23:18:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 830 transitions. [2018-11-22 23:18:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 23:18:59,124 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:59,124 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] [2018-11-22 23:18:59,124 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:59,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1021673335, now seen corresponding path program 1 times [2018-11-22 23:18:59,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:59,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:59,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:59,169 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:59,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:59,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:59,170 INFO L87 Difference]: Start difference. First operand 330 states and 830 transitions. Second operand 3 states. [2018-11-22 23:18:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,209 INFO L93 Difference]: Finished difference Result 525 states and 1351 transitions. [2018-11-22 23:18:59,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:59,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-22 23:18:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,212 INFO L225 Difference]: With dead ends: 525 [2018-11-22 23:18:59,212 INFO L226 Difference]: Without dead ends: 525 [2018-11-22 23:18:59,213 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 [2018-11-22 23:18:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-11-22 23:18:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 347. [2018-11-22 23:18:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-11-22 23:18:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 873 transitions. [2018-11-22 23:18:59,230 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 873 transitions. Word has length 21 [2018-11-22 23:18:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,230 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 873 transitions. [2018-11-22 23:18:59,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 873 transitions. [2018-11-22 23:18:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-22 23:18:59,232 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:59,232 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] [2018-11-22 23:18:59,232 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:59,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash 342078459, now seen corresponding path program 1 times [2018-11-22 23:18:59,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:59,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:59,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,237 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:59,269 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:59,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:59,270 INFO L87 Difference]: Start difference. First operand 347 states and 873 transitions. Second operand 3 states. [2018-11-22 23:18:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,295 INFO L93 Difference]: Finished difference Result 493 states and 1264 transitions. [2018-11-22 23:18:59,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:59,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-22 23:18:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,298 INFO L225 Difference]: With dead ends: 493 [2018-11-22 23:18:59,298 INFO L226 Difference]: Without dead ends: 493 [2018-11-22 23:18:59,299 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 [2018-11-22 23:18:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-11-22 23:18:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 339. [2018-11-22 23:18:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-11-22 23:18:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 832 transitions. [2018-11-22 23:18:59,310 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 832 transitions. Word has length 25 [2018-11-22 23:18:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,310 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 832 transitions. [2018-11-22 23:18:59,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 832 transitions. [2018-11-22 23:18:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-22 23:18:59,312 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:59,312 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] [2018-11-22 23:18:59,312 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:59,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1948646166, now seen corresponding path program 1 times [2018-11-22 23:18:59,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:59,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:59,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,317 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:59,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:59,354 INFO L87 Difference]: Start difference. First operand 339 states and 832 transitions. Second operand 3 states. [2018-11-22 23:18:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,387 INFO L93 Difference]: Finished difference Result 365 states and 865 transitions. [2018-11-22 23:18:59,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:59,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-22 23:18:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,389 INFO L225 Difference]: With dead ends: 365 [2018-11-22 23:18:59,389 INFO L226 Difference]: Without dead ends: 365 [2018-11-22 23:18:59,389 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 [2018-11-22 23:18:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-11-22 23:18:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 360. [2018-11-22 23:18:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-11-22 23:18:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 855 transitions. [2018-11-22 23:18:59,395 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 855 transitions. Word has length 34 [2018-11-22 23:18:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,395 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 855 transitions. [2018-11-22 23:18:59,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 855 transitions. [2018-11-22 23:18:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-22 23:18:59,396 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:59,396 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] [2018-11-22 23:18:59,397 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:59,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:59,397 INFO L82 PathProgramCache]: Analyzing trace with hash 349860526, now seen corresponding path program 2 times [2018-11-22 23:18:59,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:59,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:18:59,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,400 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:59,424 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:59,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:59,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:59,425 INFO L87 Difference]: Start difference. First operand 360 states and 855 transitions. Second operand 3 states. [2018-11-22 23:18:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,476 INFO L93 Difference]: Finished difference Result 352 states and 823 transitions. [2018-11-22 23:18:59,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:59,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-22 23:18:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,479 INFO L225 Difference]: With dead ends: 352 [2018-11-22 23:18:59,479 INFO L226 Difference]: Without dead ends: 352 [2018-11-22 23:18:59,479 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 [2018-11-22 23:18:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-11-22 23:18:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-11-22 23:18:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-11-22 23:18:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 823 transitions. [2018-11-22 23:18:59,488 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 823 transitions. Word has length 34 [2018-11-22 23:18:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,488 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 823 transitions. [2018-11-22 23:18:59,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 823 transitions. [2018-11-22 23:18:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-22 23:18:59,489 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:18:59,489 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] [2018-11-22 23:18:59,490 INFO L423 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:18:59,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:18:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash 79360814, now seen corresponding path program 3 times [2018-11-22 23:18:59,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:18:59,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 23:18:59,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:18:59,493 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:18:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:18:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:18:59,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:18:59,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:18:59,527 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:18:59,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:18:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:18:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:18:59,528 INFO L87 Difference]: Start difference. First operand 352 states and 823 transitions. Second operand 3 states. [2018-11-22 23:18:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:18:59,589 INFO L93 Difference]: Finished difference Result 299 states and 691 transitions. [2018-11-22 23:18:59,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:18:59,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-22 23:18:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:18:59,590 INFO L225 Difference]: With dead ends: 299 [2018-11-22 23:18:59,591 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:18:59,591 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 [2018-11-22 23:18:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:18:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:18:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:18:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:18:59,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-11-22 23:18:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:18:59,592 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:18:59,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:18:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:18:59,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:18:59,598 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-22 23:18:59,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:18:59 BasicIcfg [2018-11-22 23:18:59,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:18:59,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:18:59,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:18:59,600 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:18:59,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:58" (3/4) ... [2018-11-22 23:18:59,604 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:18:59,610 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-11-22 23:18:59,613 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-22 23:18:59,614 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 23:18:59,649 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bbeca397-c290-45f8-afd4-54b889966a3b/bin-2019/utaipan/witness.graphml [2018-11-22 23:18:59,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:18:59,650 INFO L168 Benchmark]: Toolchain (without parser) took 1478.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -76.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,651 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:18:59,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 957.5 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,652 INFO L168 Benchmark]: Boogie Preprocessor took 21.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:18:59,652 INFO L168 Benchmark]: RCFGBuilder took 242.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,652 INFO L168 Benchmark]: TraceAbstraction took 760.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.1 MB). Peak memory consumption was 94.1 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,653 INFO L168 Benchmark]: Witness Printer took 49.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:18:59,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 368.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 957.5 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 242.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 760.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.1 MB). Peak memory consumption was 94.1 MB. Max. memory is 11.5 GB. * Witness Printer took 49.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 667]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 649]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 77 locations, 3 error locations. SAFE Result, 0.7s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 426 SDtfs, 164 SDslu, 183 SDs, 0 SdLazy, 74 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred 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, 337 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 5655 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 correct! Received shutdown request...