./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54c9c3f123e280a35d761deadfd537de0a28f053 ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-09 06:36:59,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 06:36:59,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 06:36:59,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 06:36:59,588 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 06:36:59,589 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 06:36:59,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 06:36:59,591 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 06:36:59,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 06:36:59,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 06:36:59,593 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 06:36:59,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 06:36:59,594 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 06:36:59,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 06:36:59,596 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 06:36:59,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 06:36:59,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 06:36:59,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 06:36:59,600 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 06:36:59,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 06:36:59,602 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 06:36:59,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 06:36:59,604 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 06:36:59,604 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 06:36:59,604 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 06:36:59,605 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 06:36:59,606 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 06:36:59,606 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 06:36:59,607 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 06:36:59,608 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 06:36:59,608 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 06:36:59,608 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 06:36:59,608 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 06:36:59,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 06:36:59,609 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 06:36:59,610 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 06:36:59,610 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 06:36:59,620 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 06:36:59,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 06:36:59,621 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 06:36:59,621 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 06:36:59,621 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 06:36:59,621 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 06:36:59,621 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 06:36:59,621 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 06:36:59,622 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 06:36:59,622 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 06:36:59,622 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 06:36:59,622 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 06:36:59,622 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 06:36:59,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 06:36:59,623 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 06:36:59,623 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 06:36:59,623 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 06:36:59,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 06:36:59,624 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 06:36:59,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 06:36:59,625 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 06:36:59,625 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 06:36:59,625 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 06:36:59,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:36:59,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 06:36:59,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 06:36:59,626 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2018-12-09 06:36:59,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 06:36:59,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 06:36:59,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 06:36:59,663 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 06:36:59,663 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 06:36:59,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-12-09 06:36:59,708 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/data/22a718fc2/dde4263afc034b6887c05a2a5e897c1f/FLAG9d9e552d7 [2018-12-09 06:37:00,008 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 06:37:00,009 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-12-09 06:37:00,013 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/data/22a718fc2/dde4263afc034b6887c05a2a5e897c1f/FLAG9d9e552d7 [2018-12-09 06:37:00,022 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/data/22a718fc2/dde4263afc034b6887c05a2a5e897c1f [2018-12-09 06:37:00,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 06:37:00,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 06:37:00,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 06:37:00,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 06:37:00,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 06:37:00,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00, skipping insertion in model container [2018-12-09 06:37:00,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 06:37:00,043 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 06:37:00,135 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:37:00,140 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 06:37:00,151 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 06:37:00,160 INFO L195 MainTranslator]: Completed translation [2018-12-09 06:37:00,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00 WrapperNode [2018-12-09 06:37:00,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 06:37:00,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 06:37:00,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 06:37:00,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 06:37:00,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 06:37:00,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 06:37:00,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 06:37:00,174 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 06:37:00,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... [2018-12-09 06:37:00,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 06:37:00,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 06:37:00,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 06:37:00,222 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 06:37:00,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 06:37:00,253 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-12-09 06:37:00,253 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 06:37:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-12-09 06:37:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 06:37:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-12-09 06:37:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 06:37:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 06:37:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 06:37:00,380 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 06:37:00,380 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 06:37:00,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:37:00 BoogieIcfgContainer [2018-12-09 06:37:00,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 06:37:00,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 06:37:00,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 06:37:00,383 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 06:37:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:37:00" (1/3) ... [2018-12-09 06:37:00,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305da6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:37:00, skipping insertion in model container [2018-12-09 06:37:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:37:00" (2/3) ... [2018-12-09 06:37:00,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305da6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:37:00, skipping insertion in model container [2018-12-09 06:37:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:37:00" (3/3) ... [2018-12-09 06:37:00,384 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_false-unreach-call.c [2018-12-09 06:37:00,390 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 06:37:00,394 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 06:37:00,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 06:37:00,422 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 06:37:00,422 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 06:37:00,422 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 06:37:00,422 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 06:37:00,422 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 06:37:00,422 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 06:37:00,422 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 06:37:00,422 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 06:37:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-12-09 06:37:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 06:37:00,435 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:37:00,436 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:37:00,437 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:37:00,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:37:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1838243936, now seen corresponding path program 1 times [2018-12-09 06:37:00,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:37:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:00,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:37:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:00,469 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:37:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:37:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-09 06:37:00,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 06:37:00,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 06:37:00,544 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 06:37:00,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 06:37:00,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 06:37:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 06:37:00,556 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-12-09 06:37:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:37:00,568 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2018-12-09 06:37:00,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 06:37:00,569 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-12-09 06:37:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:37:00,574 INFO L225 Difference]: With dead ends: 49 [2018-12-09 06:37:00,574 INFO L226 Difference]: Without dead ends: 31 [2018-12-09 06:37:00,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 06:37:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-09 06:37:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-09 06:37:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-09 06:37:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-12-09 06:37:00,599 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2018-12-09 06:37:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:37:00,600 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-12-09 06:37:00,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 06:37:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-12-09 06:37:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 06:37:00,601 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:37:00,602 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:37:00,602 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:37:00,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:37:00,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1291679579, now seen corresponding path program 1 times [2018-12-09 06:37:00,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:37:00,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:00,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:37:00,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:00,603 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:37:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:37:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 06:37:00,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:37:00,736 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 06:37:00,736 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-12-09 06:37:00,738 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [10], [11], [17], [19], [21], [24], [30], [35], [38], [45], [48], [55], [58], [59], [60], [61], [62], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73] [2018-12-09 06:37:00,766 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 06:37:00,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 06:37:00,898 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 06:37:00,898 INFO L272 AbstractInterpreter]: Visited 32 different actions 38 times. Never merged. Never widened. Performed 306 root evaluator evaluations with a maximum evaluation depth of 5. Performed 306 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 39 variables. [2018-12-09 06:37:00,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:37:00,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 06:37:00,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 06:37:00,904 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 06:37:00,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:37:00,910 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 06:37:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 06:37:00,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 06:37:01,121 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-12-09 06:37:01,123 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-12-09 06:37:01,124 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 06:37:01,126 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 06:37:01,129 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 06:37:01,129 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:5 [2018-12-09 06:37:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 06:37:01,146 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 06:37:01,182 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2018-12-09 06:37:01,184 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-12-09 06:37:01,184 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 06:37:01,190 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 06:37:01,191 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 06:37:01,192 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-09 06:37:01,193 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 06:37:01,195 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 06:37:01,198 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-09 06:37:01,198 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:13, output treesize:7 [2018-12-09 06:37:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 06:37:01,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 06:37:01,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 30 [2018-12-09 06:37:01,523 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 06:37:01,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 06:37:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 06:37:01,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2018-12-09 06:37:01,525 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 20 states. [2018-12-09 06:37:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 06:37:01,851 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2018-12-09 06:37:01,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 06:37:01,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-12-09 06:37:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 06:37:01,854 INFO L225 Difference]: With dead ends: 69 [2018-12-09 06:37:01,854 INFO L226 Difference]: Without dead ends: 61 [2018-12-09 06:37:01,855 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 06:37:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-09 06:37:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2018-12-09 06:37:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 06:37:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-12-09 06:37:01,865 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2018-12-09 06:37:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 06:37:01,865 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-09 06:37:01,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 06:37:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2018-12-09 06:37:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 06:37:01,867 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 06:37:01,867 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 06:37:01,867 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 06:37:01,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 06:37:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash 270611225, now seen corresponding path program 1 times [2018-12-09 06:37:01,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 06:37:01,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:01,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 06:37:01,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 06:37:01,869 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 06:37:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:37:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 06:37:01,916 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 06:37:01,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:37:01 BoogieIcfgContainer [2018-12-09 06:37:01,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 06:37:01,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 06:37:01,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 06:37:01,940 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 06:37:01,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:37:00" (3/4) ... [2018-12-09 06:37:01,942 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 06:37:01,972 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cb9a0288-70a9-4189-be20-77af3b7597c5/bin-2019/utaipan/witness.graphml [2018-12-09 06:37:01,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 06:37:01,972 INFO L168 Benchmark]: Toolchain (without parser) took 1948.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 953.4 MB in the beginning and 815.0 MB in the end (delta: 138.4 MB). Peak memory consumption was 279.4 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,973 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:37:01,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.54 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.43 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,974 INFO L168 Benchmark]: Boogie Preprocessor took 47.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,974 INFO L168 Benchmark]: RCFGBuilder took 158.30 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,974 INFO L168 Benchmark]: TraceAbstraction took 1558.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 815.0 MB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 11.5 GB. [2018-12-09 06:37:01,975 INFO L168 Benchmark]: Witness Printer took 32.22 ms. Allocated memory is still 1.2 GB. Free memory is still 815.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 06:37:01,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.54 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.43 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -198.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.30 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: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1558.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 815.0 MB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 11.5 GB. * Witness Printer took 32.22 ms. Allocated memory is still 1.2 GB. Free memory is still 815.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=19, \old(d1)=25, \old(d2)=21, \old(d2)=24, d1={20:0}, d2={22:0}] [L32] CALL init() VAL [d1={20:0}, d2={22:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={20:0}, d2={22:0}] [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={20:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={20:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={20:0}, pd1={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={22:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={22:0}, pd1={20:0}, pd2={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=6, d1={20:0}, d2={22:0}, i=0, pd1={20:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={20:0}, pd3={22:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [\read(*pa)=6, d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=7, d1={20:0}, d2={22:0}, s1={20:0}] [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 65 SDslu, 367 SDs, 0 SdLazy, 337 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 27936 SizeOfPredicates, 17 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 36/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...