./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/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 0d29117e01c2d68b456be2ae55b4c10d8b73c290 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:35:58,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:35:58,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:35:58,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:35:58,372 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:35:58,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:35:58,374 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:35:58,375 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:35:58,377 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:35:58,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:35:58,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:35:58,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:35:58,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:35:58,380 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:35:58,381 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:35:58,382 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:35:58,383 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:35:58,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:35:58,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:35:58,388 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:35:58,389 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:35:58,390 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:35:58,392 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:35:58,392 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:35:58,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:35:58,393 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:35:58,394 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:35:58,395 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:35:58,395 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:35:58,396 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:35:58,396 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:35:58,397 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:35:58,397 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:35:58,397 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:35:58,399 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:35:58,399 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:35:58,400 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-27 00:35:58,410 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:35:58,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:35:58,411 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:35:58,411 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-27 00:35:58,412 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 00:35:58,412 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 00:35:58,412 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 00:35:58,412 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:35:58,413 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:35:58,414 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:35:58,414 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:35:58,415 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:35:58,416 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:35:58,416 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:35:58,417 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 00:35:58,417 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:35:58,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:35:58,417 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_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/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 -> 0d29117e01c2d68b456be2ae55b4c10d8b73c290 [2018-10-27 00:35:58,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:35:58,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:35:58,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:35:58,457 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:35:58,457 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:35:58,458 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-10-27 00:35:58,514 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/data/8fc285da3/30fbc6aab6c84973aa680893f0ca33b5/FLAGb8e52e150 [2018-10-27 00:35:58,877 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:35:58,877 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-10-27 00:35:58,883 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/data/8fc285da3/30fbc6aab6c84973aa680893f0ca33b5/FLAGb8e52e150 [2018-10-27 00:35:58,895 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/data/8fc285da3/30fbc6aab6c84973aa680893f0ca33b5 [2018-10-27 00:35:58,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:35:58,899 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:35:58,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:35:58,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:35:58,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:35:58,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:58" (1/1) ... [2018-10-27 00:35:58,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccde937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:58, skipping insertion in model container [2018-10-27 00:35:58,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:58" (1/1) ... [2018-10-27 00:35:58,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:35:58,933 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:35:59,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:35:59,058 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:35:59,069 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:35:59,081 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:35:59,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59 WrapperNode [2018-10-27 00:35:59,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:35:59,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:35:59,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:35:59,083 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:35:59,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... [2018-10-27 00:35:59,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:35:59,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:35:59,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:35:59,111 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:35:59,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:35:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:35:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:35:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 00:35:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:35:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-27 00:35:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:35:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:35:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:35:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:35:59,420 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:35:59,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:59 BoogieIcfgContainer [2018-10-27 00:35:59,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:35:59,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:35:59,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:35:59,424 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:35:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:35:58" (1/3) ... [2018-10-27 00:35:59,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0cace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:59, skipping insertion in model container [2018-10-27 00:35:59,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:59" (2/3) ... [2018-10-27 00:35:59,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e0cace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:59, skipping insertion in model container [2018-10-27 00:35:59,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:59" (3/3) ... [2018-10-27 00:35:59,428 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_false-unreach-call1_true-termination.i [2018-10-27 00:35:59,437 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:35:59,444 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:35:59,459 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:35:59,485 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:35:59,486 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:35:59,486 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:35:59,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:35:59,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:35:59,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:35:59,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:35:59,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:35:59,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:35:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-27 00:35:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 00:35:59,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:59,507 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:35:59,508 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:59,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-27 00:35:59,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:35:59,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:35:59,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:59,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:35:59,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:35:59,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 00:35:59,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 00:35:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 00:35:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:35:59,628 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-27 00:35:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:59,648 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-27 00:35:59,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 00:35:59,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-27 00:35:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:59,660 INFO L225 Difference]: With dead ends: 29 [2018-10-27 00:35:59,660 INFO L226 Difference]: Without dead ends: 12 [2018-10-27 00:35:59,664 INFO L605 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 [2018-10-27 00:35:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-27 00:35:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-27 00:35:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 00:35:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-27 00:35:59,699 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-27 00:35:59,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:59,699 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-27 00:35:59,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 00:35:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-27 00:35:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 00:35:59,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:59,700 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:35:59,700 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:59,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:59,701 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-27 00:35:59,701 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:35:59,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:35:59,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:59,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:35:59,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:35:59,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:35:59,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:35:59,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:35:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:35:59,830 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-27 00:35:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:59,871 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-27 00:35:59,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:35:59,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-27 00:35:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:59,872 INFO L225 Difference]: With dead ends: 19 [2018-10-27 00:35:59,872 INFO L226 Difference]: Without dead ends: 14 [2018-10-27 00:35:59,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:35:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-27 00:35:59,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 00:35:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 00:35:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-27 00:35:59,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-27 00:35:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:59,876 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-27 00:35:59,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:35:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-27 00:35:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 00:35:59,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:59,877 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:35:59,877 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:59,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:59,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-27 00:35:59,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:35:59,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:35:59,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:59,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:35:59,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:35:59,967 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:35:59,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:36:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:36:00,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:36:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:36:00,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-27 00:36:00,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:36:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:36:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:36:00,066 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-10-27 00:36:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:36:00,107 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-27 00:36:00,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:36:00,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-27 00:36:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:36:00,109 INFO L225 Difference]: With dead ends: 21 [2018-10-27 00:36:00,109 INFO L226 Difference]: Without dead ends: 16 [2018-10-27 00:36:00,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:36:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-27 00:36:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-27 00:36:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-27 00:36:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-27 00:36:00,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-10-27 00:36:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:36:00,113 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-27 00:36:00,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:36:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-27 00:36:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 00:36:00,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:36:00,114 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:36:00,114 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:36:00,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:36:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash -720896604, now seen corresponding path program 2 times [2018-10-27 00:36:00,115 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:36:00,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:36:00,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:36:00,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:36:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:36:00,224 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/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 [2018-10-27 00:36:00,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 00:36:00,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 00:36:00,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:36:00,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:36:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:36:00,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-27 00:36:00,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:36:00,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:36:00,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:36:00,307 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-10-27 00:36:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:36:00,379 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-27 00:36:00,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 00:36:00,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-27 00:36:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:36:00,380 INFO L225 Difference]: With dead ends: 23 [2018-10-27 00:36:00,380 INFO L226 Difference]: Without dead ends: 18 [2018-10-27 00:36:00,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:36:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-27 00:36:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-27 00:36:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-27 00:36:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-27 00:36:00,384 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-10-27 00:36:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:36:00,384 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-27 00:36:00,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:36:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-27 00:36:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 00:36:00,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:36:00,385 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:36:00,386 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:36:00,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:36:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -296916246, now seen corresponding path program 3 times [2018-10-27 00:36:00,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:36:00,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:36:00,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 00:36:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:36:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:36:00,628 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/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 [2018-10-27 00:36:00,635 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-27 00:36:00,658 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-27 00:36:00,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:36:00,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:36:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:36:00,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-27 00:36:00,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:36:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:36:00,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:36:00,695 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-10-27 00:36:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:36:00,743 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-27 00:36:00,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:36:00,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-10-27 00:36:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:36:00,744 INFO L225 Difference]: With dead ends: 25 [2018-10-27 00:36:00,745 INFO L226 Difference]: Without dead ends: 20 [2018-10-27 00:36:00,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:36:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-27 00:36:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-27 00:36:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 00:36:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-27 00:36:00,750 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-10-27 00:36:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:36:00,750 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-27 00:36:00,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:36:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-27 00:36:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-27 00:36:00,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:36:00,751 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:36:00,751 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:36:00,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:36:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash -873685328, now seen corresponding path program 4 times [2018-10-27 00:36:00,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:36:00,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:36:00,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 00:36:00,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:36:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:00,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:36:00,893 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:36:00,911 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-27 00:36:00,939 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-27 00:36:00,939 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:36:00,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:36:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:01,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:36:01,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-27 00:36:01,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:36:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:36:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:36:01,027 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-10-27 00:36:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:36:01,064 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-27 00:36:01,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:36:01,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-10-27 00:36:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:36:01,065 INFO L225 Difference]: With dead ends: 27 [2018-10-27 00:36:01,065 INFO L226 Difference]: Without dead ends: 22 [2018-10-27 00:36:01,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:36:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-27 00:36:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-27 00:36:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-27 00:36:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-27 00:36:01,069 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-10-27 00:36:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:36:01,069 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-27 00:36:01,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 00:36:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-27 00:36:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 00:36:01,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:36:01,072 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:36:01,073 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:36:01,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:36:01,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1097991946, now seen corresponding path program 5 times [2018-10-27 00:36:01,073 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:36:01,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:36:01,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:01,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 00:36:01,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:36:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:01,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:36:01,196 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:36:01,205 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-27 00:36:01,232 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-27 00:36:01,232 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:36:01,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:36:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:36:01,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:36:01,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-27 00:36:01,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:36:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:36:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:36:01,261 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-10-27 00:36:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:36:01,512 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-27 00:36:01,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:36:01,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-10-27 00:36:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:36:01,513 INFO L225 Difference]: With dead ends: 29 [2018-10-27 00:36:01,513 INFO L226 Difference]: Without dead ends: 24 [2018-10-27 00:36:01,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:36:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-27 00:36:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-27 00:36:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-27 00:36:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-27 00:36:01,518 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-10-27 00:36:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:36:01,520 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-27 00:36:01,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 00:36:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-27 00:36:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 00:36:01,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:36:01,521 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:36:01,521 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:36:01,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:36:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1908287044, now seen corresponding path program 6 times [2018-10-27 00:36:01,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 00:36:01,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 00:36:01,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:01,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 00:36:01,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:36:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:36:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:36:01,577 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:36:01,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:36:01 BoogieIcfgContainer [2018-10-27 00:36:01,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:36:01,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:36:01,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:36:01,609 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:36:01,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:59" (3/4) ... [2018-10-27 00:36:01,614 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 00:36:01,661 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_80a0e0d3-d585-47cf-8ed4-c617d2fdd1ef/bin-2019/uautomizer/witness.graphml [2018-10-27 00:36:01,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:36:01,662 INFO L168 Benchmark]: Toolchain (without parser) took 2763.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 960.7 MB in the beginning and 1.0 GB in the end (delta: -87.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:36:01,664 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:36:01,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.45 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:36:01,667 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 1.0 GB. Free memory is still 949.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:36:01,667 INFO L168 Benchmark]: RCFGBuilder took 309.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -227.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:36:01,667 INFO L168 Benchmark]: TraceAbstraction took 2186.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:36:01,668 INFO L168 Benchmark]: Witness Printer took 52.28 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. [2018-10-27 00:36:01,670 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.45 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 1.0 GB. Free memory is still 949.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 309.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -227.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2186.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. * Witness Printer took 52.28 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] unsigned int x = 0; [L10] unsigned int y = 1; VAL [x=0, y=1] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=1, y=2] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=2, y=4] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=3, y=8] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=4, y=16] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=5, y=32] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=6, y=64] [L11] COND FALSE !(x < 6) VAL [x=6, y=64] [L15] CALL __VERIFIER_assert(y != 64) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 2.1s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 0 SDslu, 239 SDs, 0 SdLazy, 133 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 11101 SizeOfPredicates, 5 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 0/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...