./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9281afa68f10f88b0abb59461461cab9597c1d50 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:03:10,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:03:10,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:03:10,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:03:10,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:03:10,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:03:10,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:03:10,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:03:10,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:03:10,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:03:10,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:03:10,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:03:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:03:10,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:03:10,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:03:10,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:03:10,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:03:10,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:03:10,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:03:10,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:03:10,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:03:10,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:03:10,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:03:10,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:03:10,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:03:10,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:03:10,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:03:10,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:03:10,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:03:10,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:03:10,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:03:10,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:03:10,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:03:10,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:03:10,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:03:10,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:03:10,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:03:10,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:03:10,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:03:10,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:03:10,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:03:10,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:03:10,618 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:03:10,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:03:10,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:03:10,620 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:03:10,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:03:10,620 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:03:10,620 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:03:10,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:03:10,621 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:03:10,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:03:10,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:03:10,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:03:10,622 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:03:10,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:03:10,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:03:10,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:03:10,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:03:10,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:03:10,623 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:03:10,624 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:03:10,625 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:03:10,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:03:10,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:03:10,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:03:10,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:03:10,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:03:10,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:03:10,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:03:10,626 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:03:10,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:03:10,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:03:10,627 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 9281afa68f10f88b0abb59461461cab9597c1d50 [2019-11-26 02:03:10,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:03:10,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:03:10,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:03:10,815 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:03:10,815 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:03:10,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-11-26 02:03:10,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/data/028d20649/479906b155f0458ebaad67dc946b544b/FLAG2f419974f [2019-11-26 02:03:11,351 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:03:11,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/sv-benchmarks/c/memsafety/lockfree-3.2.i [2019-11-26 02:03:11,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/data/028d20649/479906b155f0458ebaad67dc946b544b/FLAG2f419974f [2019-11-26 02:03:11,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/data/028d20649/479906b155f0458ebaad67dc946b544b [2019-11-26 02:03:11,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:03:11,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:03:11,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:03:11,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:03:11,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:03:11,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:03:11" (1/1) ... [2019-11-26 02:03:11,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ad524b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:11, skipping insertion in model container [2019-11-26 02:03:11,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:03:11" (1/1) ... [2019-11-26 02:03:11,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:03:11,913 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:03:12,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:03:12,278 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:03:12,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:03:12,376 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:03:12,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12 WrapperNode [2019-11-26 02:03:12,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:03:12,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:03:12,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:03:12,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:03:12,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:03:12,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:03:12,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:03:12,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:03:12,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... [2019-11-26 02:03:12,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:03:12,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:03:12,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:03:12,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:03:12,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:03:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:03:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:03:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:03:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:03:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:03:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:03:12,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:03:12,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:03:13,040 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:03:13,040 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-26 02:03:13,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:03:13 BoogieIcfgContainer [2019-11-26 02:03:13,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:03:13,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:03:13,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:03:13,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:03:13,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:03:11" (1/3) ... [2019-11-26 02:03:13,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3063e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:03:13, skipping insertion in model container [2019-11-26 02:03:13,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:03:12" (2/3) ... [2019-11-26 02:03:13,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3063e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:03:13, skipping insertion in model container [2019-11-26 02:03:13,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:03:13" (3/3) ... [2019-11-26 02:03:13,046 INFO L109 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2019-11-26 02:03:13,053 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:03:13,058 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-11-26 02:03:13,066 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-11-26 02:03:13,081 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:03:13,081 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:03:13,082 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:03:13,082 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:03:13,082 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:03:13,082 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:03:13,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:03:13,082 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:03:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-11-26 02:03:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:03:13,104 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:13,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:03:13,105 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash 28701576, now seen corresponding path program 1 times [2019-11-26 02:03:13,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:13,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [947975190] [2019-11-26 02:03:13,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:13,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:03:13,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:13,249 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:13,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [947975190] [2019-11-26 02:03:13,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:13,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:03:13,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130690915] [2019-11-26 02:03:13,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:03:13,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:13,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:03:13,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:13,273 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2019-11-26 02:03:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:13,376 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2019-11-26 02:03:13,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:03:13,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:03:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:13,386 INFO L225 Difference]: With dead ends: 103 [2019-11-26 02:03:13,387 INFO L226 Difference]: Without dead ends: 101 [2019-11-26 02:03:13,388 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-26 02:03:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2019-11-26 02:03:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-26 02:03:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2019-11-26 02:03:13,421 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 5 [2019-11-26 02:03:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:13,422 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2019-11-26 02:03:13,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:03:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2019-11-26 02:03:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:03:13,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:13,422 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:03:13,624 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:13,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:13,625 INFO L82 PathProgramCache]: Analyzing trace with hash 889747453, now seen corresponding path program 1 times [2019-11-26 02:03:13,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:13,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [821189089] [2019-11-26 02:03:13,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:13,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:03:13,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:13,719 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:13,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [821189089] [2019-11-26 02:03:13,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:13,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:03:13,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503329347] [2019-11-26 02:03:13,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:03:13,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:03:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:13,723 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand 3 states. [2019-11-26 02:03:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:13,867 INFO L93 Difference]: Finished difference Result 155 states and 235 transitions. [2019-11-26 02:03:13,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:03:13,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:03:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:13,869 INFO L225 Difference]: With dead ends: 155 [2019-11-26 02:03:13,869 INFO L226 Difference]: Without dead ends: 152 [2019-11-26 02:03:13,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-26 02:03:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-11-26 02:03:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-26 02:03:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 221 transitions. [2019-11-26 02:03:13,890 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 221 transitions. Word has length 6 [2019-11-26 02:03:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:13,890 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 221 transitions. [2019-11-26 02:03:13,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:03:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 221 transitions. [2019-11-26 02:03:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:03:13,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:13,891 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:03:14,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:14,092 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:14,092 INFO L82 PathProgramCache]: Analyzing trace with hash 889692424, now seen corresponding path program 1 times [2019-11-26 02:03:14,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:14,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [588144118] [2019-11-26 02:03:14,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:14,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:03:14,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:14,234 INFO L377 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 6 treesize of output 5 [2019-11-26 02:03:14,234 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:03:14,238 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:03:14,239 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:03:14,239 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:03:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:14,247 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:14,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [588144118] [2019-11-26 02:03:14,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:14,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:03:14,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415887981] [2019-11-26 02:03:14,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:03:14,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:03:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:14,251 INFO L87 Difference]: Start difference. First operand 132 states and 221 transitions. Second operand 3 states. [2019-11-26 02:03:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:14,420 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2019-11-26 02:03:14,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:03:14,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:03:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:14,423 INFO L225 Difference]: With dead ends: 199 [2019-11-26 02:03:14,423 INFO L226 Difference]: Without dead ends: 199 [2019-11-26 02:03:14,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:03:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-11-26 02:03:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 178. [2019-11-26 02:03:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-26 02:03:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 304 transitions. [2019-11-26 02:03:14,438 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 304 transitions. Word has length 6 [2019-11-26 02:03:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:14,438 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 304 transitions. [2019-11-26 02:03:14,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:03:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 304 transitions. [2019-11-26 02:03:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:03:14,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:14,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:03:14,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:14,642 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:14,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:14,642 INFO L82 PathProgramCache]: Analyzing trace with hash 889692425, now seen corresponding path program 1 times [2019-11-26 02:03:14,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:14,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [176112278] [2019-11-26 02:03:14,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:14,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:03:14,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:14,749 INFO L377 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 6 treesize of output 5 [2019-11-26 02:03:14,749 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:03:14,755 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:03:14,756 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:03:14,756 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-26 02:03:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:14,767 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:14,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176112278] [2019-11-26 02:03:14,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:14,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:03:14,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979827653] [2019-11-26 02:03:14,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:03:14,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:14,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:03:14,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:03:14,804 INFO L87 Difference]: Start difference. First operand 178 states and 304 transitions. Second operand 4 states. [2019-11-26 02:03:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:15,127 INFO L93 Difference]: Finished difference Result 262 states and 412 transitions. [2019-11-26 02:03:15,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:03:15,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-26 02:03:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:15,129 INFO L225 Difference]: With dead ends: 262 [2019-11-26 02:03:15,129 INFO L226 Difference]: Without dead ends: 262 [2019-11-26 02:03:15,129 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:03:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-11-26 02:03:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 224. [2019-11-26 02:03:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-11-26 02:03:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 385 transitions. [2019-11-26 02:03:15,145 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 385 transitions. Word has length 6 [2019-11-26 02:03:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:15,145 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 385 transitions. [2019-11-26 02:03:15,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:03:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 385 transitions. [2019-11-26 02:03:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:03:15,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:15,146 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:03:15,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:15,350 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1810669365, now seen corresponding path program 1 times [2019-11-26 02:03:15,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:15,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1579671599] [2019-11-26 02:03:15,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:15,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:03:15,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:15,441 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:15,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:03:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:15,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1579671599] [2019-11-26 02:03:15,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:15,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:03:15,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092393181] [2019-11-26 02:03:15,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:03:15,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:03:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:03:15,455 INFO L87 Difference]: Start difference. First operand 224 states and 385 transitions. Second operand 4 states. [2019-11-26 02:03:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:15,503 INFO L93 Difference]: Finished difference Result 226 states and 319 transitions. [2019-11-26 02:03:15,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:03:15,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:03:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:15,506 INFO L225 Difference]: With dead ends: 226 [2019-11-26 02:03:15,506 INFO L226 Difference]: Without dead ends: 226 [2019-11-26 02:03:15,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:03:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-11-26 02:03:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 134. [2019-11-26 02:03:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-26 02:03:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 219 transitions. [2019-11-26 02:03:15,515 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 219 transitions. Word has length 7 [2019-11-26 02:03:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:15,515 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 219 transitions. [2019-11-26 02:03:15,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:03:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 219 transitions. [2019-11-26 02:03:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:03:15,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:15,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:03:15,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:15,722 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash 346576936, now seen corresponding path program 1 times [2019-11-26 02:03:15,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:15,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [583652006] [2019-11-26 02:03:15,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:15,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:03:15,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:15,813 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:15,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:03:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:15,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [583652006] [2019-11-26 02:03:15,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:03:15,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:03:15,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796476990] [2019-11-26 02:03:15,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:03:15,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:03:15,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:03:15,818 INFO L87 Difference]: Start difference. First operand 134 states and 219 transitions. Second operand 4 states. [2019-11-26 02:03:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:15,861 INFO L93 Difference]: Finished difference Result 251 states and 398 transitions. [2019-11-26 02:03:15,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:03:15,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:03:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:15,863 INFO L225 Difference]: With dead ends: 251 [2019-11-26 02:03:15,863 INFO L226 Difference]: Without dead ends: 251 [2019-11-26 02:03:15,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:03:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-11-26 02:03:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 178. [2019-11-26 02:03:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-26 02:03:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 288 transitions. [2019-11-26 02:03:15,870 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 288 transitions. Word has length 8 [2019-11-26 02:03:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:15,871 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 288 transitions. [2019-11-26 02:03:15,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:03:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 288 transitions. [2019-11-26 02:03:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:03:15,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:15,872 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:03:16,073 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:16,073 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 212840816, now seen corresponding path program 1 times [2019-11-26 02:03:16,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:16,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1486136775] [2019-11-26 02:03:16,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/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 [2019-11-26 02:03:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:16,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:03:16,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:16,173 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:16,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:03:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:16,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1486136775] [2019-11-26 02:03:16,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49636461] [2019-11-26 02:03:16,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:03:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:03:16,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:03:16,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:03:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:16,297 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:03:16,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:03:16,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:03:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:03:16,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:03:16,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-11-26 02:03:16,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010600935] [2019-11-26 02:03:16,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:03:16,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:03:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:03:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:03:16,348 INFO L87 Difference]: Start difference. First operand 178 states and 288 transitions. Second operand 10 states. [2019-11-26 02:03:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:03:16,684 INFO L93 Difference]: Finished difference Result 709 states and 1136 transitions. [2019-11-26 02:03:16,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-26 02:03:16,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-11-26 02:03:16,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:03:16,689 INFO L225 Difference]: With dead ends: 709 [2019-11-26 02:03:16,689 INFO L226 Difference]: Without dead ends: 709 [2019-11-26 02:03:16,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-11-26 02:03:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-11-26 02:03:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 388. [2019-11-26 02:03:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-11-26 02:03:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 640 transitions. [2019-11-26 02:03:16,706 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 640 transitions. Word has length 11 [2019-11-26 02:03:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:03:16,707 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 640 transitions. [2019-11-26 02:03:16,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:03:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 640 transitions. [2019-11-26 02:03:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:03:16,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:03:16,711 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:03:17,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:17,122 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:03:17,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:03:17,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1598757208, now seen corresponding path program 1 times [2019-11-26 02:03:17,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:03:17,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [210306067] [2019-11-26 02:03:17,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_47107ba9-891d-4a29-a3aa-722d5b73b459/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:03:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:03:17,294 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:03:17,294 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:03:17,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:03:17,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:03:17 BoogieIcfgContainer [2019-11-26 02:03:17,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:03:17,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:03:17,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:03:17,527 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:03:17,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:03:13" (3/4) ... [2019-11-26 02:03:17,530 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:03:17,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:03:17,532 INFO L168 Benchmark]: Toolchain (without parser) took 5692.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -112.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:03:17,532 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:03:17,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:03:17,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:03:17,533 INFO L168 Benchmark]: Boogie Preprocessor took 39.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:03:17,534 INFO L168 Benchmark]: RCFGBuilder took 578.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:03:17,534 INFO L168 Benchmark]: TraceAbstraction took 4484.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:03:17,535 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:03:17,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 536.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 578.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4484.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 581]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 581. Possible FailurePath: [L518] int pc1 = 1; [L519] int pc4 = 1; [L517] struct cell *S; [L520] static struct cell *t1 = ((void *)0); [L521] static struct cell *x1 = ((void *)0); [L550] struct cell* garbage; [L551] static struct cell *t4 = ((void *)0); [L552] static struct cell *x4 = ((void *)0); [L555] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L583] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L584] COND TRUE __VERIFIER_nondet_int() [L524] pc1++ [L525] case 1: [L526] x1 = malloc(sizeof(*x1)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2147483648:0}, x4={0:0}] [L527] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2147483648:0}, x4={0:0}] [L528] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2147483648:0}, x4={0:0}] [L583] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L589] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2147483648:0}, x4={0:0}] [L594] S = ((void *)0) [L595] t1 = ((void *)0) [L596] x1 = ((void *)0) [L597] t4 = ((void *)0) [L598] x4 = ((void *)0) [L599] return !!garbage; VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 20 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 779 SDtfs, 1096 SDslu, 1112 SDs, 0 SdLazy, 303 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 583 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 2197 SizeOfPredicates, 15 NumberOfNonLiveVariables, 296 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 0/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...