./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-examples/standard_sentinel_true-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_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/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 b4fbc36a28ccee76a98a185e0c5cc58738af3c30 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:03:09,520 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:03:09,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:03:09,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:03:09,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:03:09,527 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:03:09,528 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:03:09,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:03:09,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:03:09,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:03:09,531 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:03:09,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:03:09,532 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:03:09,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:03:09,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:03:09,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:03:09,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:03:09,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:03:09,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:03:09,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:03:09,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:03:09,538 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:03:09,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:03:09,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:03:09,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:03:09,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:03:09,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:03:09,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:03:09,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:03:09,544 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:03:09,544 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:03:09,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:03:09,545 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:03:09,545 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:03:09,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:03:09,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:03:09,546 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 12:03:09,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:03:09,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:03:09,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:03:09,554 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 12:03:09,555 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:03:09,555 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:03:09,555 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:03:09,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:03:09,555 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:03:09,556 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:03:09,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:03:09,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:03:09,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:03:09,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:03:09,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:03:09,558 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:03:09,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:03:09,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:03:09,558 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_b3693592-8f09-4928-9f56-fa9f3b008593/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 -> b4fbc36a28ccee76a98a185e0c5cc58738af3c30 [2018-11-18 12:03:09,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:03:09,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:03:09,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:03:09,588 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:03:09,588 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:03:09,588 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-18 12:03:09,624 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/data/722e5d58d/356c17cd558145629fc8237439578ade/FLAG2d27c4a3a [2018-11-18 12:03:09,919 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:03:09,920 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-11-18 12:03:09,923 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/data/722e5d58d/356c17cd558145629fc8237439578ade/FLAG2d27c4a3a [2018-11-18 12:03:09,932 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/data/722e5d58d/356c17cd558145629fc8237439578ade [2018-11-18 12:03:09,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:03:09,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:03:09,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:03:09,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:03:09,938 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:03:09,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:03:09" (1/1) ... [2018-11-18 12:03:09,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f427c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:09, skipping insertion in model container [2018-11-18 12:03:09,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:03:09" (1/1) ... [2018-11-18 12:03:09,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:03:09,961 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:03:10,072 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:03:10,074 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:03:10,085 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:03:10,097 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:03:10,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10 WrapperNode [2018-11-18 12:03:10,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:03:10,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:03:10,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:03:10,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:03:10,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... [2018-11-18 12:03:10,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:03:10,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:03:10,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:03:10,120 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:03:10,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/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 12:03:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:03:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:03:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:03:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:03:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:03:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 12:03:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:03:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:03:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:03:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 12:03:10,323 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:03:10,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:03:10 BoogieIcfgContainer [2018-11-18 12:03:10,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:03:10,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:03:10,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:03:10,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:03:10,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:03:09" (1/3) ... [2018-11-18 12:03:10,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cc421f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:03:10, skipping insertion in model container [2018-11-18 12:03:10,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:03:10" (2/3) ... [2018-11-18 12:03:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cc421f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:03:10, skipping insertion in model container [2018-11-18 12:03:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:03:10" (3/3) ... [2018-11-18 12:03:10,328 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call_true-termination.i [2018-11-18 12:03:10,334 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:03:10,339 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:03:10,347 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:03:10,372 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:03:10,373 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:03:10,373 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:03:10,373 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:03:10,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:03:10,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:03:10,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:03:10,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:03:10,373 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:03:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 12:03:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:03:10,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:03:10,392 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:03:10,394 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:03:10,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:03:10,399 INFO L82 PathProgramCache]: Analyzing trace with hash -136856004, now seen corresponding path program 1 times [2018-11-18 12:03:10,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:03:10,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:03:10,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:03:10,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:10,488 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 12:03:10,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:03:10,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:03:10,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:03:10,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:03:10,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:03:10,504 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 12:03:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:03:10,520 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-11-18 12:03:10,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:03:10,521 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-18 12:03:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:03:10,527 INFO L225 Difference]: With dead ends: 34 [2018-11-18 12:03:10,527 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 12:03:10,530 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 12:03:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 12:03:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 12:03:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 12:03:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-18 12:03:10,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-18 12:03:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:03:10,551 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-18 12:03:10,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:03:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-18 12:03:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:03:10,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:03:10,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:03:10,552 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:03:10,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:03:10,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1358164726, now seen corresponding path program 1 times [2018-11-18 12:03:10,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:03:10,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:03:10,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:03:10,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:10,645 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 12:03:10,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:03:10,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:03:10,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:03:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:03:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:03:10,647 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-11-18 12:03:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:03:10,685 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-18 12:03:10,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:03:10,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 12:03:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:03:10,686 INFO L225 Difference]: With dead ends: 23 [2018-11-18 12:03:10,686 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:03:10,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:03:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:03:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 12:03:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 12:03:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 12:03:10,689 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-18 12:03:10,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:03:10,690 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 12:03:10,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:03:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 12:03:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 12:03:10,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:03:10,690 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:03:10,690 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:03:10,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:03:10,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1389199971, now seen corresponding path program 1 times [2018-11-18 12:03:10,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:03:10,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:03:10,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:03:10,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:10,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:03:10,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/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 12:03:10,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:03:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:10,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:03:10,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-18 12:03:10,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 12:03:10,987 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 12:03:10,990 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:10,994 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:10,995 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-18 12:03:11,010 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-11-18 12:03:11,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2018-11-18 12:03:11,021 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 12:03:11,024 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 12:03:11,031 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-18 12:03:11,032 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-11-18 12:03:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:11,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:03:11,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2018-11-18 12:03:11,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 12:03:11,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 12:03:11,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:03:11,132 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 12 states. [2018-11-18 12:03:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:03:11,206 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-18 12:03:11,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:03:11,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2018-11-18 12:03:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:03:11,207 INFO L225 Difference]: With dead ends: 26 [2018-11-18 12:03:11,207 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 12:03:11,208 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:03:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 12:03:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 12:03:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 12:03:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-18 12:03:11,211 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-18 12:03:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:03:11,211 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-18 12:03:11,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 12:03:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-18 12:03:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 12:03:11,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:03:11,212 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:03:11,212 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:03:11,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:03:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1060871574, now seen corresponding path program 2 times [2018-11-18 12:03:11,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:03:11,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:03:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:11,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:03:11,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:11,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:03:11,520 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:03:11,532 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:03:11,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:03:11,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:03:11,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:03:11,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-18 12:03:11,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 12:03:11,551 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 12:03:11,553 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:11,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:11,557 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-18 12:03:11,592 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 21 [2018-11-18 12:03:11,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 33 [2018-11-18 12:03:11,604 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-18 12:03:11,615 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 12:03:11,625 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 12:03:11,625 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:48 [2018-11-18 12:03:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:11,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:03:11,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2018-11-18 12:03:11,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 12:03:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 12:03:11,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:03:11,714 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 15 states. [2018-11-18 12:03:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:03:11,893 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-11-18 12:03:11,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:03:11,894 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2018-11-18 12:03:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:03:11,894 INFO L225 Difference]: With dead ends: 33 [2018-11-18 12:03:11,894 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 12:03:11,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2018-11-18 12:03:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 12:03:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 12:03:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 12:03:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-18 12:03:11,898 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2018-11-18 12:03:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:03:11,899 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-18 12:03:11,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 12:03:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-18 12:03:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:03:11,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:03:11,899 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:03:11,899 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:03:11,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:03:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 260100150, now seen corresponding path program 3 times [2018-11-18 12:03:11,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:03:11,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:03:11,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:11,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:03:11,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:03:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:03:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:12,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:03:12,320 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:03:12,326 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:03:12,336 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-18 12:03:12,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:03:12,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:03:12,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-18 12:03:12,342 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 12:03:12,342 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 12:03:12,344 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:12,347 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 12:03:12,347 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-18 12:03:12,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 33 [2018-11-18 12:03:12,456 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 12:03:12,458 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 12:03:12,459 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 12:03:12,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 61 [2018-11-18 12:03:12,472 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 12:03:12,487 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 12:03:12,499 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 12:03:12,499 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:62 [2018-11-18 12:03:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:03:12,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:03:12,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 23 [2018-11-18 12:03:12,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 12:03:12,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 12:03:12,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2018-11-18 12:03:12,578 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 23 states. [2018-11-18 12:03:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:03:12,813 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-18 12:03:12,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 12:03:12,813 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 26 [2018-11-18 12:03:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:03:12,814 INFO L225 Difference]: With dead ends: 31 [2018-11-18 12:03:12,814 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:03:12,814 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2018-11-18 12:03:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:03:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:03:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:03:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:03:12,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-18 12:03:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:03:12,815 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:03:12,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 12:03:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:03:12,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:03:12,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:03:12,928 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:03:12,928 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:03:12,928 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:03:12,928 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 17) the Hoare annotation is: true [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 17) no Hoare annotation was computed. [2018-11-18 12:03:12,928 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 17) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 15) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse4 (* 4 main_~pos~0))) (let ((.cse2 (+ .cse4 |main_~#a~0.offset|)) (.cse0 (<= 0 main_~pos~0)) (.cse1 (select |#memory_int| |main_~#a~0.base|)) (.cse3 (= |main_~#a~0.offset| 0))) (or (and .cse0 (= (select .cse1 .cse2) main_~marker~0) (= main_~i~0 0) .cse3) (and (not (= .cse2 0)) .cse0 (= main_~marker~0 (select .cse1 (+ |main_~#a~0.offset| .cse4))) (< main_~i~0 (+ main_~pos~0 1)) .cse3)))) [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point L8-1(lines 8 15) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (let ((.cse0 (<= 0 main_~pos~0))) (or (and .cse0 (= main_~i~0 0)) (and (<= main_~i~0 main_~pos~0) (not (= (+ (* 4 main_~pos~0) |main_~#a~0.offset|) 0)) .cse0 (= |main_~#a~0.offset| 0)))) [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-11-18 12:03:12,929 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-11-18 12:03:12,930 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-11-18 12:03:12,930 INFO L425 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-11-18 12:03:12,930 INFO L425 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-11-18 12:03:12,934 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,935 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,938 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,938 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:03:12 BoogieIcfgContainer [2018-11-18 12:03:12,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:03:12,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:03:12,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:03:12,940 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:03:12,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:03:10" (3/4) ... [2018-11-18 12:03:12,944 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:03:12,948 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:03:12,948 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:03:12,949 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 12:03:12,952 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 12:03:12,952 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 12:03:12,952 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:03:12,981 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b3693592-8f09-4928-9f56-fa9f3b008593/bin-2019/uautomizer/witness.graphml [2018-11-18 12:03:12,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:03:12,982 INFO L168 Benchmark]: Toolchain (without parser) took 3047.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 960.3 MB in the beginning and 1.2 GB in the end (delta: -211.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:03:12,983 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:03:12,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.28 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 12:03:12,983 INFO L168 Benchmark]: Boogie Preprocessor took 22.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:03:12,984 INFO L168 Benchmark]: RCFGBuilder took 202.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:03:12,984 INFO L168 Benchmark]: TraceAbstraction took 2616.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -55.2 MB). Peak memory consumption was 249.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:03:12,984 INFO L168 Benchmark]: Witness Printer took 41.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:03:12,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.28 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 22.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 202.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2616.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -55.2 MB). Peak memory consumption was 249.7 MB. Max. memory is 11.5 GB. * Witness Printer took 41.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2018-11-18 12:03:12,989 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,989 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,990 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 12:03:12,990 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((0 <= pos && unknown-#memory_int-unknown[a][4 * pos + a] == marker) && i == 0) && a == 0) || ((((!(4 * pos + a == 0) && 0 <= pos) && marker == unknown-#memory_int-unknown[a][a + 4 * pos]) && i < pos + 1) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 74 SDslu, 229 SDs, 0 SdLazy, 271 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 84 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 312 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 41853 SizeOfPredicates, 18 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...