./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f270b702de634d3ad2ee5a400388c6410a4cf10 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:02:31,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:02:31,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:02:31,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:02:31,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:02:31,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:02:31,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:02:31,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:02:31,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:02:31,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:02:31,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:02:31,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:02:31,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:02:31,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:02:31,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:02:31,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:02:31,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:02:31,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:02:31,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:02:31,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:02:31,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:02:31,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:02:31,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:02:31,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:02:31,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:02:31,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:02:31,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:02:31,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:02:31,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:02:31,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:02:31,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:02:31,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:02:31,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:02:31,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:02:31,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:02:31,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:02:31,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:02:31,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:02:31,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:02:31,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:02:31,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:02:31,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:02:31,535 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:02:31,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:02:31,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:02:31,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:02:31,538 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:02:31,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:02:31,539 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:02:31,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:02:31,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:02:31,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:02:31,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:02:31,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:02:31,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:02:31,541 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:02:31,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:02:31,541 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:02:31,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:02:31,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:02:31,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:02:31,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:02:31,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:02:31,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:02:31,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:02:31,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:02:31,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:02:31,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:02:31,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:02:31,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:02:31,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2019-11-19 22:02:31,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:02:31,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:02:31,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:02:31,731 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:02:31,731 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:02:31,732 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-11-19 22:02:31,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/data/6742be37e/de2fb92aa4e0401ca09df0d57fb2a2d6/FLAG0177baf04 [2019-11-19 22:02:32,288 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:02:32,289 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-11-19 22:02:32,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/data/6742be37e/de2fb92aa4e0401ca09df0d57fb2a2d6/FLAG0177baf04 [2019-11-19 22:02:32,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/data/6742be37e/de2fb92aa4e0401ca09df0d57fb2a2d6 [2019-11-19 22:02:32,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:02:32,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:02:32,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:02:32,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:02:32,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:02:32,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:02:32" (1/1) ... [2019-11-19 22:02:32,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2651b422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:32, skipping insertion in model container [2019-11-19 22:02:32,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:02:32" (1/1) ... [2019-11-19 22:02:32,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:02:32,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:02:33,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:02:33,086 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:02:33,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:02:33,196 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:02:33,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33 WrapperNode [2019-11-19 22:02:33,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:02:33,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:02:33,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:02:33,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:02:33,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:02:33,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:02:33,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:02:33,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:02:33,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... [2019-11-19 22:02:33,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:02:33,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:02:33,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:02:33,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:02:33,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:02:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 22:02:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 22:02:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:02:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:02:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:02:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:02:33,837 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:02:33,837 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-19 22:02:33,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:02:33 BoogieIcfgContainer [2019-11-19 22:02:33,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:02:33,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:02:33,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:02:33,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:02:33,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:02:32" (1/3) ... [2019-11-19 22:02:33,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a44b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:02:33, skipping insertion in model container [2019-11-19 22:02:33,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:02:33" (2/3) ... [2019-11-19 22:02:33,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a44b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:02:33, skipping insertion in model container [2019-11-19 22:02:33,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:02:33" (3/3) ... [2019-11-19 22:02:33,847 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2019-11-19 22:02:33,858 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:02:33,865 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-19 22:02:33,875 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-19 22:02:33,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:02:33,903 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:02:33,903 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:02:33,903 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:02:33,903 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:02:33,903 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:02:33,903 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:02:33,903 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:02:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-19 22:02:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 22:02:33,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:02:33,922 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:02:33,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:02:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:02:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2019-11-19 22:02:33,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:02:33,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995239802] [2019-11-19 22:02:33,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:02:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:02:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:02:34,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995239802] [2019-11-19 22:02:34,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:02:34,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:02:34,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693810478] [2019-11-19 22:02:34,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 22:02:34,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:02:34,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 22:02:34,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 22:02:34,084 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-19 22:02:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:02:34,100 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2019-11-19 22:02:34,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 22:02:34,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-19 22:02:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:02:34,108 INFO L225 Difference]: With dead ends: 53 [2019-11-19 22:02:34,108 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 22:02:34,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 22:02:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 22:02:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-19 22:02:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 22:02:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-19 22:02:34,140 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2019-11-19 22:02:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:02:34,140 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-19 22:02:34,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 22:02:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-19 22:02:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:02:34,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:02:34,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:02:34,141 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:02:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:02:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2019-11-19 22:02:34,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:02:34,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782431936] [2019-11-19 22:02:34,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:02:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:02:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:02:34,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782431936] [2019-11-19 22:02:34,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:02:34,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:02:34,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803877826] [2019-11-19 22:02:34,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:02:34,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:02:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:02:34,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:02:34,209 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2019-11-19 22:02:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:02:34,303 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-11-19 22:02:34,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:02:34,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 22:02:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:02:34,305 INFO L225 Difference]: With dead ends: 31 [2019-11-19 22:02:34,305 INFO L226 Difference]: Without dead ends: 29 [2019-11-19 22:02:34,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:02:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-19 22:02:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2019-11-19 22:02:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 22:02:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-19 22:02:34,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2019-11-19 22:02:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:02:34,310 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-19 22:02:34,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:02:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-19 22:02:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:02:34,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:02:34,311 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:02:34,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:02:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:02:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2019-11-19 22:02:34,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:02:34,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726806556] [2019-11-19 22:02:34,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:02:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:02:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:02:34,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726806556] [2019-11-19 22:02:34,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:02:34,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:02:34,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74476454] [2019-11-19 22:02:34,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:02:34,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:02:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:02:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:02:34,444 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2019-11-19 22:02:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:02:34,608 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-11-19 22:02:34,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:02:34,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-19 22:02:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:02:34,611 INFO L225 Difference]: With dead ends: 47 [2019-11-19 22:02:34,611 INFO L226 Difference]: Without dead ends: 45 [2019-11-19 22:02:34,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:02:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-19 22:02:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-19 22:02:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 22:02:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-19 22:02:34,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2019-11-19 22:02:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:02:34,621 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-19 22:02:34,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:02:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-19 22:02:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 22:02:34,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:02:34,622 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:02:34,623 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:02:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:02:34,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2019-11-19 22:02:34,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:02:34,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982090949] [2019-11-19 22:02:34,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:02:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:02:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:02:34,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982090949] [2019-11-19 22:02:34,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642780900] [2019-11-19 22:02:34,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:02:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:02:35,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-19 22:02:35,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:02:35,084 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 [2019-11-19 22:02:35,084 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,101 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,107 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-19 22:02:35,108 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,119 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,120 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,120 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2019-11-19 22:02:35,191 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,191 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-19 22:02:35,192 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,276 INFO L567 ElimStorePlain]: treesize reduction 14, result has 88.6 percent of original size [2019-11-19 22:02:35,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:02:35,289 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,330 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,336 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,373 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,378 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,408 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,416 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:02:35,434 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,435 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2019-11-19 22:02:35,436 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,489 INFO L567 ElimStorePlain]: treesize reduction 20, result has 72.2 percent of original size [2019-11-19 22:02:35,491 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,491 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:111, output treesize:27 [2019-11-19 22:02:35,569 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,570 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2019-11-19 22:02:35,571 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,638 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_23|, |v_#memory_int_30|, |v_#memory_int_31|, |v_#memory_int_32|], 4=[|v_#memory_int_34|]} [2019-11-19 22:02:35,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:02:35,646 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,699 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,740 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,744 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,780 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:02:35,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:02:35,889 INFO L343 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2019-11-19 22:02:35,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2019-11-19 22:02:35,890 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-19 22:02:35,977 INFO L567 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2019-11-19 22:02:35,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:02:35,987 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2019-11-19 22:02:35,987 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:107 [2019-11-19 22:02:42,064 WARN L191 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 76 [2019-11-19 22:03:06,348 WARN L191 SmtUtils]: Spent 24.13 s on a formula simplification that was a NOOP. DAG size: 78 [2019-11-19 22:03:06,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-19 22:03:06,386 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2019-11-19 22:03:06,387 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:03:06,439 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:03:06,447 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2019-11-19 22:03:06,448 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:03:06,491 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:03:06,496 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2019-11-19 22:03:06,497 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-19 22:03:06,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:03:06,530 INFO L496 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:03:06,530 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 18 variables, input treesize:136, output treesize:3 [2019-11-19 22:03:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:03:06,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:03:06,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-19 22:03:06,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123768958] [2019-11-19 22:03:06,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:03:06,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:03:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:03:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:03:06,537 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2019-11-19 22:03:36,827 WARN L191 SmtUtils]: Spent 30.13 s on a formula simplification that was a NOOP. DAG size: 115 [2019-11-19 22:03:49,157 WARN L191 SmtUtils]: Spent 12.11 s on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2019-11-19 22:04:01,312 WARN L191 SmtUtils]: Spent 12.08 s on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-11-19 22:04:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:04:01,409 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2019-11-19 22:04:01,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 22:04:01,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-19 22:04:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:04:01,411 INFO L225 Difference]: With dead ends: 60 [2019-11-19 22:04:01,411 INFO L226 Difference]: Without dead ends: 58 [2019-11-19 22:04:01,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 84.9s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:04:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-19 22:04:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 19. [2019-11-19 22:04:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-19 22:04:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-19 22:04:01,417 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-19 22:04:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:04:01,417 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-19 22:04:01,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:04:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-19 22:04:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 22:04:01,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:04:01,418 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:04:01,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:04:01,622 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:04:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:04:01,622 INFO L82 PathProgramCache]: Analyzing trace with hash -839217458, now seen corresponding path program 1 times [2019-11-19 22:04:01,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:04:01,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915943776] [2019-11-19 22:04:01,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:04:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:04:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:04:01,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915943776] [2019-11-19 22:04:01,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:04:01,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:04:01,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392149164] [2019-11-19 22:04:01,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:04:01,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:04:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:04:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:04:01,742 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-19 22:04:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:04:01,812 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-19 22:04:01,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:04:01,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-19 22:04:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:04:01,813 INFO L225 Difference]: With dead ends: 35 [2019-11-19 22:04:01,813 INFO L226 Difference]: Without dead ends: 27 [2019-11-19 22:04:01,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:04:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-19 22:04:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-11-19 22:04:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 22:04:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-19 22:04:01,818 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2019-11-19 22:04:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:04:01,818 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-19 22:04:01,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:04:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-19 22:04:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 22:04:01,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:04:01,819 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:04:01,819 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:04:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:04:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -839157876, now seen corresponding path program 1 times [2019-11-19 22:04:01,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:04:01,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152634497] [2019-11-19 22:04:01,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:04:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:04:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:04:01,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:04:01,857 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:04:01,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:04:01 BoogieIcfgContainer [2019-11-19 22:04:01,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:04:01,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:04:01,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:04:01,881 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:04:01,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:02:33" (3/4) ... [2019-11-19 22:04:01,883 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:04:01,922 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_498aca96-e27d-4f8b-abda-05108d060ddd/bin/uautomizer/witness.graphml [2019-11-19 22:04:01,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:04:01,924 INFO L168 Benchmark]: Toolchain (without parser) took 89308.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,924 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:04:01,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.89 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,926 INFO L168 Benchmark]: Boogie Preprocessor took 35.18 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. [2019-11-19 22:04:01,926 INFO L168 Benchmark]: RCFGBuilder took 558.22 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,927 INFO L168 Benchmark]: TraceAbstraction took 88040.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,927 INFO L168 Benchmark]: Witness Printer took 41.93 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: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:04:01,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 577.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.89 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.18 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 558.22 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 88040.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.93 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: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Result: UNSAFE, OverallTime: 87.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 55.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 152 SDslu, 202 SDs, 0 SdLazy, 206 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 85.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 6 QuantifiedInterpolants, 12720 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...