./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/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 dae69c3a5994f0236815dc66269f749edc55ae48 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/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 dae69c3a5994f0236815dc66269f749edc55ae48 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:18:46,626 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:18:46,627 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:18:46,633 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:18:46,634 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:18:46,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:18:46,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:18:46,636 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:18:46,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:18:46,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:18:46,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:18:46,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:18:46,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:18:46,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:18:46,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:18:46,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:18:46,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:18:46,641 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:18:46,642 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:18:46,643 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:18:46,643 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:18:46,644 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:18:46,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:18:46,645 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:18:46,646 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:18:46,646 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:18:46,647 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:18:46,647 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:18:46,647 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:18:46,648 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:18:46,648 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:18:46,649 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:18:46,649 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:18:46,649 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:18:46,649 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:18:46,650 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:18:46,650 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 12:18:46,658 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:18:46,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:18:46,658 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:18:46,658 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:18:46,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 12:18:46,659 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:18:46,660 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:18:46,660 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:18:46,661 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:18:46,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:18:46,662 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 12:18:46,662 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 12:18:46,662 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_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/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 -> dae69c3a5994f0236815dc66269f749edc55ae48 [2018-12-09 12:18:46,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:18:46,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:18:46,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:18:46,693 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:18:46,693 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:18:46,693 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/../../sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:46,731 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/7f25954c6/fdfbf7f0e3454d9791dc543c3d94160d/FLAG37181b6c0 [2018-12-09 12:18:47,114 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:18:47,114 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:47,124 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/7f25954c6/fdfbf7f0e3454d9791dc543c3d94160d/FLAG37181b6c0 [2018-12-09 12:18:47,475 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/7f25954c6/fdfbf7f0e3454d9791dc543c3d94160d [2018-12-09 12:18:47,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:18:47,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:18:47,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:18:47,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:18:47,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:18:47,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:47" (1/1) ... [2018-12-09 12:18:47,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b4f3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:47, skipping insertion in model container [2018-12-09 12:18:47,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:47" (1/1) ... [2018-12-09 12:18:47,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:18:47,531 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:18:47,954 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:18:47,960 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:18:47,993 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:18:48,115 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:18:48,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48 WrapperNode [2018-12-09 12:18:48,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:18:48,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:18:48,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:18:48,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:18:48,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:18:48,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:18:48,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:18:48,152 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:18:48,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... [2018-12-09 12:18:48,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:18:48,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:18:48,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:18:48,174 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:18:48,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 12:18:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:18:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:18:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2018-12-09 12:18:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2018-12-09 12:18:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 12:18:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 12:18:48,208 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 12:18:48,557 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:18:48,558 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 12:18:48,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:48 BoogieIcfgContainer [2018-12-09 12:18:48,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:18:48,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:18:48,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:18:48,560 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:18:48,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:18:47" (1/3) ... [2018-12-09 12:18:48,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c737368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:48, skipping insertion in model container [2018-12-09 12:18:48,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:48" (2/3) ... [2018-12-09 12:18:48,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c737368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:48, skipping insertion in model container [2018-12-09 12:18:48,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:48" (3/3) ... [2018-12-09 12:18:48,562 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:48,584 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,584 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,584 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,584 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,585 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,586 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,587 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,587 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,587 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,587 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,587 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,588 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,589 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,589 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,589 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,590 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,590 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,590 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,590 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,590 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,591 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,591 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,591 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,591 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,591 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,592 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,593 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,594 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,594 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,594 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,594 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,594 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,595 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,596 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,596 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,596 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,596 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,596 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:48,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 12:18:48,611 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:18:48,618 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 12:18:48,631 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 12:18:48,653 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:18:48,653 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:18:48,653 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:18:48,653 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:18:48,653 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:18:48,653 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:18:48,654 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:18:48,654 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:18:48,662 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146places, 154 transitions [2018-12-09 12:18:48,959 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 12676 states. [2018-12-09 12:18:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 12676 states. [2018-12-09 12:18:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-09 12:18:48,969 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:48,969 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:48,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:48,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1462003864, now seen corresponding path program 1 times [2018-12-09 12:18:48,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:49,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:49,037 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:49,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:49,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 12:18:49,223 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:49,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 12:18:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 12:18:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 12:18:49,242 INFO L87 Difference]: Start difference. First operand 12676 states. Second operand 6 states. [2018-12-09 12:18:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:49,720 INFO L93 Difference]: Finished difference Result 16571 states and 46675 transitions. [2018-12-09 12:18:49,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 12:18:49,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-12-09 12:18:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:49,791 INFO L225 Difference]: With dead ends: 16571 [2018-12-09 12:18:49,791 INFO L226 Difference]: Without dead ends: 14503 [2018-12-09 12:18:49,793 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-12-09 12:18:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14503 states. [2018-12-09 12:18:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 11927. [2018-12-09 12:18:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11927 states. [2018-12-09 12:18:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11927 states to 11927 states and 33542 transitions. [2018-12-09 12:18:50,077 INFO L78 Accepts]: Start accepts. Automaton has 11927 states and 33542 transitions. Word has length 43 [2018-12-09 12:18:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:50,078 INFO L480 AbstractCegarLoop]: Abstraction has 11927 states and 33542 transitions. [2018-12-09 12:18:50,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 12:18:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 11927 states and 33542 transitions. [2018-12-09 12:18:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-09 12:18:50,080 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:50,080 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:50,081 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:50,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash -674595693, now seen corresponding path program 1 times [2018-12-09 12:18:50,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:50,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:50,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:50,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:50,089 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:50,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:50,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 12:18:50,148 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:50,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:18:50,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:18:50,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 12:18:50,149 INFO L87 Difference]: Start difference. First operand 11927 states and 33542 transitions. Second operand 5 states. [2018-12-09 12:18:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:50,253 INFO L93 Difference]: Finished difference Result 11921 states and 33535 transitions. [2018-12-09 12:18:50,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 12:18:50,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2018-12-09 12:18:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:50,277 INFO L225 Difference]: With dead ends: 11921 [2018-12-09 12:18:50,277 INFO L226 Difference]: Without dead ends: 11921 [2018-12-09 12:18:50,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:18:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11921 states. [2018-12-09 12:18:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11921 to 11906. [2018-12-09 12:18:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11906 states. [2018-12-09 12:18:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11906 states to 11906 states and 33521 transitions. [2018-12-09 12:18:50,462 INFO L78 Accepts]: Start accepts. Automaton has 11906 states and 33521 transitions. Word has length 47 [2018-12-09 12:18:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:50,463 INFO L480 AbstractCegarLoop]: Abstraction has 11906 states and 33521 transitions. [2018-12-09 12:18:50,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:18:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11906 states and 33521 transitions. [2018-12-09 12:18:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-09 12:18:50,465 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:50,465 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:50,465 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:50,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:50,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1682576984, now seen corresponding path program 1 times [2018-12-09 12:18:50,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:50,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:50,473 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:50,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:50,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:18:50,677 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:50,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:18:50,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:18:50,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:18:50,677 INFO L87 Difference]: Start difference. First operand 11906 states and 33521 transitions. Second operand 8 states. [2018-12-09 12:18:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:51,583 INFO L93 Difference]: Finished difference Result 15162 states and 42331 transitions. [2018-12-09 12:18:51,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 12:18:51,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2018-12-09 12:18:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:51,605 INFO L225 Difference]: With dead ends: 15162 [2018-12-09 12:18:51,605 INFO L226 Difference]: Without dead ends: 13368 [2018-12-09 12:18:51,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-12-09 12:18:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13368 states. [2018-12-09 12:18:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13368 to 13046. [2018-12-09 12:18:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13046 states. [2018-12-09 12:18:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 36709 transitions. [2018-12-09 12:18:51,765 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 36709 transitions. Word has length 49 [2018-12-09 12:18:51,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:51,766 INFO L480 AbstractCegarLoop]: Abstraction has 13046 states and 36709 transitions. [2018-12-09 12:18:51,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:18:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 36709 transitions. [2018-12-09 12:18:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-09 12:18:51,769 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:51,769 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:51,769 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:51,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash 772654246, now seen corresponding path program 1 times [2018-12-09 12:18:51,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:51,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:51,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:51,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:51,775 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:51,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:51,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 12:18:51,848 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:51,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 12:18:51,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 12:18:51,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 12:18:51,849 INFO L87 Difference]: Start difference. First operand 13046 states and 36709 transitions. Second operand 6 states. [2018-12-09 12:18:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:52,201 INFO L93 Difference]: Finished difference Result 16973 states and 47577 transitions. [2018-12-09 12:18:52,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 12:18:52,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-12-09 12:18:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:52,220 INFO L225 Difference]: With dead ends: 16973 [2018-12-09 12:18:52,221 INFO L226 Difference]: Without dead ends: 16973 [2018-12-09 12:18:52,221 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-12-09 12:18:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16973 states. [2018-12-09 12:18:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16973 to 13884. [2018-12-09 12:18:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13884 states. [2018-12-09 12:18:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13884 states to 13884 states and 39043 transitions. [2018-12-09 12:18:52,411 INFO L78 Accepts]: Start accepts. Automaton has 13884 states and 39043 transitions. Word has length 53 [2018-12-09 12:18:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:52,412 INFO L480 AbstractCegarLoop]: Abstraction has 13884 states and 39043 transitions. [2018-12-09 12:18:52,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 12:18:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 13884 states and 39043 transitions. [2018-12-09 12:18:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 12:18:52,419 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:52,419 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:52,419 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:52,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1132716599, now seen corresponding path program 1 times [2018-12-09 12:18:52,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:52,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:52,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:52,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:52,425 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:52,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:52,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 12:18:52,507 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:52,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:18:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:18:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 12:18:52,508 INFO L87 Difference]: Start difference. First operand 13884 states and 39043 transitions. Second operand 5 states. [2018-12-09 12:18:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:52,563 INFO L93 Difference]: Finished difference Result 8059 states and 22533 transitions. [2018-12-09 12:18:52,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 12:18:52,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2018-12-09 12:18:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:52,569 INFO L225 Difference]: With dead ends: 8059 [2018-12-09 12:18:52,569 INFO L226 Difference]: Without dead ends: 8059 [2018-12-09 12:18:52,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:18:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8059 states. [2018-12-09 12:18:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8059 to 8059. [2018-12-09 12:18:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8059 states. [2018-12-09 12:18:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8059 states to 8059 states and 22533 transitions. [2018-12-09 12:18:52,672 INFO L78 Accepts]: Start accepts. Automaton has 8059 states and 22533 transitions. Word has length 57 [2018-12-09 12:18:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:52,673 INFO L480 AbstractCegarLoop]: Abstraction has 8059 states and 22533 transitions. [2018-12-09 12:18:52,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:18:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8059 states and 22533 transitions. [2018-12-09 12:18:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-09 12:18:52,676 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:52,676 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:52,677 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:52,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash -524066288, now seen corresponding path program 1 times [2018-12-09 12:18:52,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:52,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:52,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:52,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:52,685 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:52,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:52,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:18:52,829 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:18:52,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:18:52,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:18:52,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:18:52,829 INFO L87 Difference]: Start difference. First operand 8059 states and 22533 transitions. Second operand 8 states. [2018-12-09 12:18:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:53,624 INFO L93 Difference]: Finished difference Result 12465 states and 34445 transitions. [2018-12-09 12:18:53,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 12:18:53,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-12-09 12:18:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:53,640 INFO L225 Difference]: With dead ends: 12465 [2018-12-09 12:18:53,640 INFO L226 Difference]: Without dead ends: 12465 [2018-12-09 12:18:53,640 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-12-09 12:18:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12465 states. [2018-12-09 12:18:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12465 to 10346. [2018-12-09 12:18:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10346 states. [2018-12-09 12:18:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10346 states to 10346 states and 29105 transitions. [2018-12-09 12:18:53,761 INFO L78 Accepts]: Start accepts. Automaton has 10346 states and 29105 transitions. Word has length 59 [2018-12-09 12:18:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:18:53,761 INFO L480 AbstractCegarLoop]: Abstraction has 10346 states and 29105 transitions. [2018-12-09 12:18:53,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:18:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 10346 states and 29105 transitions. [2018-12-09 12:18:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-09 12:18:53,765 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:53,765 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:53,765 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:53,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2100637634, now seen corresponding path program 1 times [2018-12-09 12:18:53,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:18:53,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:53,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:53,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:18:53,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:18:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:18:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:18:53,813 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 12:18:53,816 INFO L168 Benchmark]: Toolchain (without parser) took 6334.55 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 368.1 MB). Free memory was 951.3 MB in the beginning and 878.4 MB in the end (delta: 72.9 MB). Peak memory consumption was 440.9 MB. Max. memory is 11.5 GB. [2018-12-09 12:18:53,817 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:18:53,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -93.1 MB). Peak memory consumption was 86.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:18:53,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.64 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: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:18:53,818 INFO L168 Benchmark]: Boogie Preprocessor took 22.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:18:53,818 INFO L168 Benchmark]: RCFGBuilder took 383.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 987.7 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. [2018-12-09 12:18:53,818 INFO L168 Benchmark]: TraceAbstraction took 5256.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 203.4 MB). Free memory was 987.7 MB in the beginning and 878.4 MB in the end (delta: 109.3 MB). Peak memory consumption was 312.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:18:53,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 629.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -93.1 MB). Peak memory consumption was 86.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.64 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: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 383.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 987.7 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5256.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 203.4 MB). Free memory was 987.7 MB in the beginning and 878.4 MB in the end (delta: 109.3 MB). Peak memory consumption was 312.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:18:55,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:18:55,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:18:55,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:18:55,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:18:55,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:18:55,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:18:55,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:18:55,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:18:55,147 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:18:55,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:18:55,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:18:55,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:18:55,148 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:18:55,149 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:18:55,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:18:55,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:18:55,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:18:55,151 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:18:55,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:18:55,152 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:18:55,153 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:18:55,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:18:55,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:18:55,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:18:55,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:18:55,155 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:18:55,156 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:18:55,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:18:55,157 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:18:55,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:18:55,157 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:18:55,157 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:18:55,157 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:18:55,158 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:18:55,158 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:18:55,158 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 12:18:55,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:18:55,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:18:55,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:18:55,166 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:18:55,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:18:55,167 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:18:55,167 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:18:55,167 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:18:55,167 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:18:55,167 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:18:55,167 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:18:55,168 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:18:55,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:18:55,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:18:55,169 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 12:18:55,170 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:18:55,170 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 12:18:55,170 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 12:18:55,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/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 -> dae69c3a5994f0236815dc66269f749edc55ae48 [2018-12-09 12:18:55,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:18:55,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:18:55,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:18:55,201 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:18:55,201 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:18:55,202 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/../../sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:55,241 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/a5245b8f9/a3db66fcefed421cbd7da144c7f008fe/FLAG04cb3fa9b [2018-12-09 12:18:55,757 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:18:55,758 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/sv-benchmarks/c/ldv-races/race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:55,768 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/a5245b8f9/a3db66fcefed421cbd7da144c7f008fe/FLAG04cb3fa9b [2018-12-09 12:18:56,272 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/data/a5245b8f9/a3db66fcefed421cbd7da144c7f008fe [2018-12-09 12:18:56,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:18:56,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:18:56,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:18:56,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:18:56,278 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:18:56,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:56,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f01457b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56, skipping insertion in model container [2018-12-09 12:18:56,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:56,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:18:56,321 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:18:56,747 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:18:56,756 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:18:56,831 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:18:56,976 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:18:56,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56 WrapperNode [2018-12-09 12:18:56,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:18:56,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:18:56,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:18:56,977 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:18:56,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:18:57,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:18:57,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:18:57,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:18:57,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... [2018-12-09 12:18:57,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:18:57,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:18:57,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:18:57,045 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:18:57,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:18:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:18:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:18:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2018-12-09 12:18:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2018-12-09 12:18:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 12:18:57,081 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 12:18:57,538 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:18:57,538 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 12:18:57,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:57 BoogieIcfgContainer [2018-12-09 12:18:57,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:18:57,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:18:57,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:18:57,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:18:57,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:18:56" (1/3) ... [2018-12-09 12:18:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b54113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:57, skipping insertion in model container [2018-12-09 12:18:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:56" (2/3) ... [2018-12-09 12:18:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b54113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:18:57, skipping insertion in model container [2018-12-09 12:18:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:57" (3/3) ... [2018-12-09 12:18:57,544 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of_false-unreach-call.i [2018-12-09 12:18:57,565 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,566 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,567 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,568 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe Thread0_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe |Thread0_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,569 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,570 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,571 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,572 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,573 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,573 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,573 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,573 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,573 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe Thread1_my_callback_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,574 WARN L317 ript$VariableManager]: TermVariabe |Thread1_my_callback_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 12:18:57,592 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 12:18:57,592 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:18:57,597 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-09 12:18:57,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-09 12:18:57,621 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 12:18:57,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:18:57,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:18:57,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:18:57,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:18:57,621 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:18:57,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:18:57,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:18:57,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:18:57,628 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 143places, 151 transitions [2018-12-09 12:18:57,895 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 12448 states. [2018-12-09 12:18:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 12448 states. [2018-12-09 12:18:57,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 12:18:57,904 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:18:57,905 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:18:57,907 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:18:57,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:18:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash 712452213, now seen corresponding path program 1 times [2018-12-09 12:18:57,914 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:18:57,914 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:18:57,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:18:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:18:58,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:18:58,234 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 12:18:58,238 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 12:18:58,238 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,244 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,274 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-09 12:18:58,297 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 12:18:58,303 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 12:18:58,304 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2018-12-09 12:18:58,305 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,316 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,330 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-09 12:18:58,359 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2018-12-09 12:18:58,363 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2018-12-09 12:18:58,363 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,366 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:18:58,369 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:5 [2018-12-09 12:18:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:18:58,422 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:18:58,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:18:58,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 12:18:58,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 12:18:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 12:18:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:18:58,441 INFO L87 Difference]: Start difference. First operand 12448 states. Second operand 8 states. [2018-12-09 12:18:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:18:59,824 INFO L93 Difference]: Finished difference Result 16343 states and 46027 transitions. [2018-12-09 12:18:59,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 12:18:59,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-12-09 12:18:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:18:59,878 INFO L225 Difference]: With dead ends: 16343 [2018-12-09 12:18:59,878 INFO L226 Difference]: Without dead ends: 14275 [2018-12-09 12:18:59,879 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-12-09 12:18:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2018-12-09 12:19:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 11699. [2018-12-09 12:19:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11699 states. [2018-12-09 12:19:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11699 states to 11699 states and 32894 transitions. [2018-12-09 12:19:00,138 INFO L78 Accepts]: Start accepts. Automaton has 11699 states and 32894 transitions. Word has length 40 [2018-12-09 12:19:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:00,139 INFO L480 AbstractCegarLoop]: Abstraction has 11699 states and 32894 transitions. [2018-12-09 12:19:00,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 12:19:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11699 states and 32894 transitions. [2018-12-09 12:19:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-09 12:19:00,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:00,141 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:00,142 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:00,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1790706994, now seen corresponding path program 1 times [2018-12-09 12:19:00,142 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:00,142 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:00,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:19:00,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:19:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:19:00,244 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:19:00,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:19:00,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 12:19:00,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:19:00,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:19:00,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 12:19:00,247 INFO L87 Difference]: Start difference. First operand 11699 states and 32894 transitions. Second operand 5 states. [2018-12-09 12:19:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:19:00,360 INFO L93 Difference]: Finished difference Result 11693 states and 32887 transitions. [2018-12-09 12:19:00,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 12:19:00,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-12-09 12:19:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:19:00,387 INFO L225 Difference]: With dead ends: 11693 [2018-12-09 12:19:00,388 INFO L226 Difference]: Without dead ends: 11693 [2018-12-09 12:19:00,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:19:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11693 states. [2018-12-09 12:19:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11693 to 11678. [2018-12-09 12:19:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11678 states. [2018-12-09 12:19:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11678 states to 11678 states and 32873 transitions. [2018-12-09 12:19:00,566 INFO L78 Accepts]: Start accepts. Automaton has 11678 states and 32873 transitions. Word has length 44 [2018-12-09 12:19:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:00,567 INFO L480 AbstractCegarLoop]: Abstraction has 11678 states and 32873 transitions. [2018-12-09 12:19:00,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:19:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11678 states and 32873 transitions. [2018-12-09 12:19:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 12:19:00,569 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:00,570 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:00,570 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:00,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash -935718427, now seen corresponding path program 1 times [2018-12-09 12:19:00,571 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:00,571 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:00,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:19:00,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:19:00,782 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 12:19:00,785 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 12:19:00,785 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,789 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,792 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,792 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-12-09 12:19:00,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-09 12:19:00,808 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-12-09 12:19:00,809 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,811 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:00,813 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2018-12-09 12:19:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:19:00,844 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:19:00,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:19:00,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 12:19:00,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 12:19:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 12:19:00,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 12:19:00,847 INFO L87 Difference]: Start difference. First operand 11678 states and 32873 transitions. Second operand 6 states. [2018-12-09 12:19:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:19:01,724 INFO L93 Difference]: Finished difference Result 14929 states and 41678 transitions. [2018-12-09 12:19:01,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 12:19:01,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2018-12-09 12:19:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:19:01,747 INFO L225 Difference]: With dead ends: 14929 [2018-12-09 12:19:01,747 INFO L226 Difference]: Without dead ends: 13141 [2018-12-09 12:19:01,747 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-09 12:19:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13141 states. [2018-12-09 12:19:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13141 to 12819. [2018-12-09 12:19:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12819 states. [2018-12-09 12:19:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 36062 transitions. [2018-12-09 12:19:01,939 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 36062 transitions. Word has length 46 [2018-12-09 12:19:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:01,939 INFO L480 AbstractCegarLoop]: Abstraction has 12819 states and 36062 transitions. [2018-12-09 12:19:01,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 12:19:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 36062 transitions. [2018-12-09 12:19:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 12:19:01,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:01,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:01,942 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:01,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1539300962, now seen corresponding path program 1 times [2018-12-09 12:19:01,943 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:01,943 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:01,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:19:02,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:19:02,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 12:19:02,281 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 12:19:02,281 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,284 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-09 12:19:02,317 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 12:19:02,321 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 12:19:02,321 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2018-12-09 12:19:02,321 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,329 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,341 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-09 12:19:02,370 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-12-09 12:19:02,373 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-12-09 12:19:02,374 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,381 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:02,381 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:5 [2018-12-09 12:19:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:19:02,426 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:19:02,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:19:02,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 12:19:02,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 12:19:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 12:19:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-12-09 12:19:02,429 INFO L87 Difference]: Start difference. First operand 12819 states and 36062 transitions. Second operand 10 states. [2018-12-09 12:19:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:19:03,829 INFO L93 Difference]: Finished difference Result 16746 states and 46930 transitions. [2018-12-09 12:19:03,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 12:19:03,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-12-09 12:19:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:19:03,845 INFO L225 Difference]: With dead ends: 16746 [2018-12-09 12:19:03,845 INFO L226 Difference]: Without dead ends: 16746 [2018-12-09 12:19:03,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2018-12-09 12:19:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16746 states. [2018-12-09 12:19:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16746 to 13657. [2018-12-09 12:19:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13657 states. [2018-12-09 12:19:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 38396 transitions. [2018-12-09 12:19:04,077 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 38396 transitions. Word has length 50 [2018-12-09 12:19:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:04,078 INFO L480 AbstractCegarLoop]: Abstraction has 13657 states and 38396 transitions. [2018-12-09 12:19:04,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 12:19:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 38396 transitions. [2018-12-09 12:19:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-09 12:19:04,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:04,083 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:04,083 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:04,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 369553983, now seen corresponding path program 1 times [2018-12-09 12:19:04,084 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:04,084 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:04,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:19:04,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:19:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:19:04,177 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:19:04,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:19:04,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 12:19:04,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 12:19:04,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 12:19:04,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 12:19:04,180 INFO L87 Difference]: Start difference. First operand 13657 states and 38396 transitions. Second operand 5 states. [2018-12-09 12:19:04,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:19:04,234 INFO L93 Difference]: Finished difference Result 7832 states and 21886 transitions. [2018-12-09 12:19:04,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 12:19:04,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2018-12-09 12:19:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:19:04,241 INFO L225 Difference]: With dead ends: 7832 [2018-12-09 12:19:04,242 INFO L226 Difference]: Without dead ends: 7832 [2018-12-09 12:19:04,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-09 12:19:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2018-12-09 12:19:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7832. [2018-12-09 12:19:04,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7832 states. [2018-12-09 12:19:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 21886 transitions. [2018-12-09 12:19:04,324 INFO L78 Accepts]: Start accepts. Automaton has 7832 states and 21886 transitions. Word has length 54 [2018-12-09 12:19:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:04,324 INFO L480 AbstractCegarLoop]: Abstraction has 7832 states and 21886 transitions. [2018-12-09 12:19:04,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 12:19:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7832 states and 21886 transitions. [2018-12-09 12:19:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-09 12:19:04,327 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:04,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:04,327 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:04,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:04,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1530247818, now seen corresponding path program 1 times [2018-12-09 12:19:04,328 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:04,328 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:04,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:19:04,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:19:04,532 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-12-09 12:19:04,534 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-09 12:19:04,535 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,538 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,541 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,541 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-12-09 12:19:04,551 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-12-09 12:19:04,553 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-12-09 12:19:04,553 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,556 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,558 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 12:19:04,558 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2018-12-09 12:19:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:19:04,587 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 12:19:04,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:19:04,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 12:19:04,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 12:19:04,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 12:19:04,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 12:19:04,590 INFO L87 Difference]: Start difference. First operand 7832 states and 21886 transitions. Second operand 6 states. [2018-12-09 12:19:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:19:05,351 INFO L93 Difference]: Finished difference Result 12239 states and 33799 transitions. [2018-12-09 12:19:05,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 12:19:05,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2018-12-09 12:19:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:19:05,360 INFO L225 Difference]: With dead ends: 12239 [2018-12-09 12:19:05,360 INFO L226 Difference]: Without dead ends: 12239 [2018-12-09 12:19:05,360 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-12-09 12:19:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12239 states. [2018-12-09 12:19:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12239 to 10119. [2018-12-09 12:19:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10119 states. [2018-12-09 12:19:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 28458 transitions. [2018-12-09 12:19:05,468 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 28458 transitions. Word has length 56 [2018-12-09 12:19:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:19:05,468 INFO L480 AbstractCegarLoop]: Abstraction has 10119 states and 28458 transitions. [2018-12-09 12:19:05,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 12:19:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 28458 transitions. [2018-12-09 12:19:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-12-09 12:19:05,471 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:19:05,471 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:19:05,472 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:19:05,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:19:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1536045358, now seen corresponding path program 1 times [2018-12-09 12:19:05,472 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 12:19:05,473 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92fc2ad0-fdd4-4e57-8b6d-0c3104296095/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:05,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:19:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:19:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:19:06,304 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 12:19:06,305 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 12:19:06,311 INFO L168 Benchmark]: Toolchain (without parser) took 10036.42 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 333.4 MB). Free memory was 938.0 MB in the beginning and 829.1 MB in the end (delta: 108.9 MB). Peak memory consumption was 442.4 MB. Max. memory is 11.5 GB. [2018-12-09 12:19:06,313 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:19:06,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -66.8 MB). Peak memory consumption was 86.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:19:06,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:19:06,314 INFO L168 Benchmark]: Boogie Preprocessor took 27.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-09 12:19:06,314 INFO L168 Benchmark]: RCFGBuilder took 493.67 ms. Allocated memory is still 1.2 GB. Free memory was 998.3 MB in the beginning and 954.3 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-12-09 12:19:06,314 INFO L168 Benchmark]: TraceAbstraction took 8770.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 195.6 MB). Free memory was 947.7 MB in the beginning and 829.1 MB in the end (delta: 118.6 MB). Peak memory consumption was 314.2 MB. Max. memory is 11.5 GB. [2018-12-09 12:19:06,316 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 701.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -66.8 MB). Peak memory consumption was 86.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 998.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 493.67 ms. Allocated memory is still 1.2 GB. Free memory was 998.3 MB in the beginning and 954.3 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8770.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 195.6 MB). Free memory was 947.7 MB in the beginning and 829.1 MB in the end (delta: 118.6 MB). Peak memory consumption was 314.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...