./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/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 6b853b7a72b17d5b4054a16a7ba98c728e55c23b ............................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-1dbac8b [2018-10-26 21:44:41,178 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:44:41,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:44:41,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:44:41,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:44:41,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:44:41,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:44:41,193 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:44:41,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:44:41,195 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:44:41,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:44:41,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:44:41,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:44:41,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:44:41,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:44:41,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:44:41,200 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:44:41,202 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:44:41,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:44:41,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:44:41,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:44:41,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:44:41,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:44:41,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:44:41,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:44:41,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:44:41,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:44:41,211 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:44:41,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:44:41,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:44:41,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:44:41,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:44:41,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:44:41,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:44:41,215 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:44:41,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:44:41,216 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 21:44:41,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:44:41,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:44:41,229 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:44:41,229 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:44:41,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:44:41,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:44:41,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:44:41,230 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:44:41,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:44:41,231 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:44:41,232 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:44:41,232 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:44:41,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:44:41,232 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:44:41,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:44:41,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:44:41,234 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:44:41,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:44:41,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:44:41,235 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/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 -> 6b853b7a72b17d5b4054a16a7ba98c728e55c23b [2018-10-26 21:44:41,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:44:41,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:44:41,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:44:41,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:44:41,281 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:44:41,282 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-26 21:44:41,339 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/data/0145c3c32/ff6103359cd045df96c893cfdcabb0da/FLAG43065c730 [2018-10-26 21:44:41,765 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:44:41,767 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-10-26 21:44:41,774 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/data/0145c3c32/ff6103359cd045df96c893cfdcabb0da/FLAG43065c730 [2018-10-26 21:44:41,792 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/data/0145c3c32/ff6103359cd045df96c893cfdcabb0da [2018-10-26 21:44:41,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:44:41,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:44:41,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:41,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:44:41,803 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:44:41,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:41" (1/1) ... [2018-10-26 21:44:41,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:41, skipping insertion in model container [2018-10-26 21:44:41,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:41" (1/1) ... [2018-10-26 21:44:41,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:44:41,838 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:44:41,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:41,975 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:44:41,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:42,002 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:44:42,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42 WrapperNode [2018-10-26 21:44:42,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:42,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:44:42,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:44:42,003 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:44:42,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... [2018-10-26 21:44:42,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:44:42,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:44:42,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:44:42,037 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:44:42,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/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 [2018-10-26 21:44:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:44:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:44:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 21:44:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:44:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 21:44:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 21:44:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:44:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 21:44:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:44:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:44:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:44:42,652 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:44:42,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:42 BoogieIcfgContainer [2018-10-26 21:44:42,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:44:42,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:44:42,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:44:42,659 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:44:42,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:44:41" (1/3) ... [2018-10-26 21:44:42,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548c5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:42, skipping insertion in model container [2018-10-26 21:44:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:42" (2/3) ... [2018-10-26 21:44:42,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548c5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:42, skipping insertion in model container [2018-10-26 21:44:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:42" (3/3) ... [2018-10-26 21:44:42,663 INFO L112 eAbstractionObserver]: Analyzing ICFG id_trans_false-unreach-call_true-termination.i [2018-10-26 21:44:42,674 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:44:42,683 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:44:42,700 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:44:42,732 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:44:42,733 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:44:42,733 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:44:42,734 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:44:42,734 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:44:42,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:44:42,734 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:44:42,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:44:42,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:44:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-26 21:44:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 21:44:42,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:42,764 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:42,766 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:42,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash -243865802, now seen corresponding path program 1 times [2018-10-26 21:44:42,776 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:44:42,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:44:42,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:42,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:42,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:44:43,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:44:43,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:44:43,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:44:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:44:43,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:44:43,080 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-10-26 21:44:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:44:43,329 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-10-26 21:44:43,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:44:43,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-26 21:44:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:44:43,339 INFO L225 Difference]: With dead ends: 48 [2018-10-26 21:44:43,340 INFO L226 Difference]: Without dead ends: 23 [2018-10-26 21:44:43,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:44:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-26 21:44:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-26 21:44:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-26 21:44:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-26 21:44:43,383 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2018-10-26 21:44:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:44:43,384 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-26 21:44:43,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:44:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-26 21:44:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 21:44:43,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:43,386 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:43,386 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:43,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:43,386 INFO L82 PathProgramCache]: Analyzing trace with hash 662571400, now seen corresponding path program 1 times [2018-10-26 21:44:43,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:44:43,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:44:43,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:43,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:43,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:44:43,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:44:43,663 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/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 [2018-10-26 21:44:43,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:43,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:44:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:44:43,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:44:43,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2018-10-26 21:44:43,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 21:44:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 21:44:43,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:44:43,967 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2018-10-26 21:44:44,249 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-10-26 21:44:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:44:44,303 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-10-26 21:44:44,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:44:44,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-26 21:44:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:44:44,304 INFO L225 Difference]: With dead ends: 29 [2018-10-26 21:44:44,305 INFO L226 Difference]: Without dead ends: 27 [2018-10-26 21:44:44,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:44:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-26 21:44:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-26 21:44:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-26 21:44:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-26 21:44:44,313 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-10-26 21:44:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:44:44,313 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-26 21:44:44,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 21:44:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-26 21:44:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 21:44:44,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:44,314 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:44,314 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:44,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash -366649848, now seen corresponding path program 1 times [2018-10-26 21:44:44,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:44:44,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:44:44,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:44,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:44,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:44:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:44:44,369 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:44:44,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:44:44 BoogieIcfgContainer [2018-10-26 21:44:44,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:44:44,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:44:44,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:44:44,392 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:44:44,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:42" (3/4) ... [2018-10-26 21:44:44,395 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 21:44:44,438 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3ee3a4e7-3363-42f0-90d1-9a35f2ab49f6/bin-2019/uautomizer/witness.graphml [2018-10-26 21:44:44,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:44:44,439 INFO L168 Benchmark]: Toolchain (without parser) took 2642.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:44,440 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:44:44,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.72 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:44,441 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:44:44,442 INFO L168 Benchmark]: RCFGBuilder took 619.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -224.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:44,442 INFO L168 Benchmark]: TraceAbstraction took 1736.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:44,444 INFO L168 Benchmark]: Witness Printer took 46.21 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. [2018-10-26 21:44:44,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.72 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 619.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -224.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1736.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. * Witness Printer took 46.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] __VERIFIER_assert( 0 <= j) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] __VERIFIER_assert( j < material_length ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNSAFE Result, 1.6s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 21 SDslu, 129 SDs, 0 SdLazy, 93 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...