./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/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 0ab550a6e9aa370752671d7ad69781384c889e75 ................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-5842f4b [2018-11-18 16:25:11,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:25:11,851 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:25:11,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:25:11,858 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:25:11,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:25:11,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:25:11,861 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:25:11,862 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:25:11,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:25:11,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:25:11,863 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:25:11,864 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:25:11,865 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:25:11,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:25:11,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:25:11,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:25:11,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:25:11,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:25:11,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:25:11,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:25:11,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:25:11,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:25:11,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:25:11,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:25:11,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:25:11,873 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:25:11,874 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:25:11,874 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:25:11,875 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:25:11,875 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:25:11,876 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:25:11,876 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:25:11,876 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:25:11,877 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:25:11,877 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:25:11,877 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 16:25:11,884 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:25:11,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:25:11,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:25:11,885 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:25:11,885 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:25:11,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:25:11,886 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:25:11,887 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:25:11,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:25:11,888 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:25:11,888 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:25:11,889 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:25:11,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:25:11,889 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_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/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 -> 0ab550a6e9aa370752671d7ad69781384c889e75 [2018-11-18 16:25:11,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:25:11,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:25:11,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:25:11,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:25:11,921 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:25:11,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-11-18 16:25:11,962 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/data/bf19f52d4/443d43986dc44d9a8d19ebf76e484f17/FLAG78b9e1a08 [2018-11-18 16:25:12,287 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:25:12,287 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-11-18 16:25:12,292 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/data/bf19f52d4/443d43986dc44d9a8d19ebf76e484f17/FLAG78b9e1a08 [2018-11-18 16:25:12,304 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/data/bf19f52d4/443d43986dc44d9a8d19ebf76e484f17 [2018-11-18 16:25:12,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:25:12,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:25:12,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:25:12,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:25:12,312 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:25:12,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88e9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12, skipping insertion in model container [2018-11-18 16:25:12,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:25:12,338 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:25:12,448 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:25:12,450 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:25:12,459 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:25:12,469 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:25:12,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12 WrapperNode [2018-11-18 16:25:12,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:25:12,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:25:12,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:25:12,470 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:25:12,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... [2018-11-18 16:25:12,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:25:12,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:25:12,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:25:12,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:25:12,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/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 [2018-11-18 16:25:12,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:25:12,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:25:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:25:12,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:25:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:25:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:25:12,673 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:25:12,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:12 BoogieIcfgContainer [2018-11-18 16:25:12,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:25:12,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:25:12,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:25:12,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:25:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:25:12" (1/3) ... [2018-11-18 16:25:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466bf98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:25:12, skipping insertion in model container [2018-11-18 16:25:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:12" (2/3) ... [2018-11-18 16:25:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466bf98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:25:12, skipping insertion in model container [2018-11-18 16:25:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:12" (3/3) ... [2018-11-18 16:25:12,680 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-11-18 16:25:12,688 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:25:12,694 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:25:12,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:25:12,727 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:25:12,728 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:25:12,728 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:25:12,728 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:25:12,728 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:25:12,728 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:25:12,728 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:25:12,728 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:25:12,728 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:25:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-18 16:25:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 16:25:12,747 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:12,748 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:12,749 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:12,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1420455248, now seen corresponding path program 1 times [2018-11-18 16:25:12,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:25:12,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:25:12,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:12,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:25:12,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:12,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:25:12,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:25:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:25:12,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:25:12,837 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-11-18 16:25:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:12,852 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2018-11-18 16:25:12,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:25:12,853 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 16:25:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:12,860 INFO L225 Difference]: With dead ends: 42 [2018-11-18 16:25:12,860 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 16:25:12,862 INFO L604 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 [2018-11-18 16:25:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 16:25:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 16:25:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 16:25:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-18 16:25:12,888 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-11-18 16:25:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:12,888 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-18 16:25:12,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:25:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-18 16:25:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:25:12,889 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:12,889 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:12,889 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:12,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1573461901, now seen corresponding path program 1 times [2018-11-18 16:25:12,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:25:12,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:25:12,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:12,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:25:12,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:12,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 16:25:13,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:25:13,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:25:13,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:13,001 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2018-11-18 16:25:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:13,119 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 16:25:13,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:25:13,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-18 16:25:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:13,120 INFO L225 Difference]: With dead ends: 31 [2018-11-18 16:25:13,120 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 16:25:13,121 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:25:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 16:25:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-18 16:25:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:25:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-18 16:25:13,128 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2018-11-18 16:25:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:13,129 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-18 16:25:13,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:25:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-18 16:25:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:25:13,130 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:13,130 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:13,130 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:13,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:13,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1075995346, now seen corresponding path program 1 times [2018-11-18 16:25:13,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:25:13,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:25:13,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:13,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:25:13,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:13,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/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 [2018-11-18 16:25:13,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:13,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:25:13,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:13,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2018-11-18 16:25:13,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 16:25:13,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 16:25:13,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:25:13,338 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 11 states. [2018-11-18 16:25:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:13,463 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-18 16:25:13,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:25:13,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-11-18 16:25:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:13,465 INFO L225 Difference]: With dead ends: 38 [2018-11-18 16:25:13,465 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 16:25:13,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-18 16:25:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 16:25:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-11-18 16:25:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 16:25:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-18 16:25:13,470 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2018-11-18 16:25:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:13,470 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-18 16:25:13,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 16:25:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-18 16:25:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:25:13,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:13,471 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:13,471 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:13,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash 977980684, now seen corresponding path program 1 times [2018-11-18 16:25:13,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:25:13,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:25:13,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:13,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:25:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:25:13,500 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:25:13,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:25:13 BoogieIcfgContainer [2018-11-18 16:25:13,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:25:13,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:25:13,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:25:13,518 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:25:13,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:12" (3/4) ... [2018-11-18 16:25:13,522 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:25:13,558 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_928cd0cd-5dbe-4fca-8ecf-6c4b4c44066b/bin-2019/uautomizer/witness.graphml [2018-11-18 16:25:13,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:25:13,559 INFO L168 Benchmark]: Toolchain (without parser) took 1251.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -75.7 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:13,560 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:25:13,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.01 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:13,561 INFO L168 Benchmark]: Boogie Preprocessor took 19.81 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 945.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:13,562 INFO L168 Benchmark]: RCFGBuilder took 182.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:13,562 INFO L168 Benchmark]: TraceAbstraction took 843.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.0 MB). Peak memory consumption was 94.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:13,563 INFO L168 Benchmark]: Witness Printer took 40.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:25:13,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.01 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.81 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 945.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 843.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.0 MB). Peak memory consumption was 94.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i