./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test23_false-unreach-call.c --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_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 b974f281a213c0803f91ef44d205e442fb2a5f8f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:36:42,441 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:36:42,443 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:36:42,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:36:42,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:36:42,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:36:42,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:36:42,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:36:42,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:36:42,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:36:42,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:36:42,464 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:36:42,464 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:36:42,466 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:36:42,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:36:42,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:36:42,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:36:42,470 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:36:42,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:36:42,473 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:36:42,474 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:36:42,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:36:42,477 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:36:42,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:36:42,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:36:42,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:36:42,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:36:42,480 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:36:42,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:36:42,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:36:42,482 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:36:42,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:36:42,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:36:42,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:36:42,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:36:42,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:36:42,485 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 19:36:42,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:36:42,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:36:42,498 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:36:42,498 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:36:42,498 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:36:42,498 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:36:42,498 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:36:42,499 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:36:42,499 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:36:42,499 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:36:42,499 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:36:42,499 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:36:42,499 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:36:42,500 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:36:42,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:36:42,501 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:36:42,501 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:36:42,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:36:42,503 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:36:42,503 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:36:42,504 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:36:42,504 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:36:42,504 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:36:42,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:36:42,504 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_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 -> b974f281a213c0803f91ef44d205e442fb2a5f8f [2018-10-26 19:36:42,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:36:42,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:36:42,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:36:42,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:36:42,556 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:36:42,557 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test23_false-unreach-call.c [2018-10-26 19:36:42,611 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/data/e4031a73e/fd12948a671a426e9323ccf6e2407455/FLAG0b8cb43ed [2018-10-26 19:36:43,009 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:36:43,009 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/sv-benchmarks/c/ldv-regression/test23_false-unreach-call.c [2018-10-26 19:36:43,015 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/data/e4031a73e/fd12948a671a426e9323ccf6e2407455/FLAG0b8cb43ed [2018-10-26 19:36:43,027 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/data/e4031a73e/fd12948a671a426e9323ccf6e2407455 [2018-10-26 19:36:43,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:36:43,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:36:43,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:36:43,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:36:43,037 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:36:43,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeeae86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43, skipping insertion in model container [2018-10-26 19:36:43,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:36:43,070 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:36:43,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:36:43,264 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:36:43,285 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:36:43,304 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:36:43,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43 WrapperNode [2018-10-26 19:36:43,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:36:43,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:36:43,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:36:43,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:36:43,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... [2018-10-26 19:36:43,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:36:43,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:36:43,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:36:43,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:36:43,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:36:43,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:36:43,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:36:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-10-26 19:36:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-10-26 19:36:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-10-26 19:36:43,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:36:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 19:36:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 19:36:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-10-26 19:36:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 19:36:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 19:36:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:36:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 19:36:44,156 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:36:44,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:36:44 BoogieIcfgContainer [2018-10-26 19:36:44,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:36:44,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:36:44,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:36:44,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:36:44,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:36:43" (1/3) ... [2018-10-26 19:36:44,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e3584f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:36:44, skipping insertion in model container [2018-10-26 19:36:44,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:36:43" (2/3) ... [2018-10-26 19:36:44,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e3584f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:36:44, skipping insertion in model container [2018-10-26 19:36:44,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:36:44" (3/3) ... [2018-10-26 19:36:44,165 INFO L112 eAbstractionObserver]: Analyzing ICFG test23_false-unreach-call.c [2018-10-26 19:36:44,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:36:44,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:36:44,190 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:36:44,217 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:36:44,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:36:44,218 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:36:44,218 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:36:44,218 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:36:44,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:36:44,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:36:44,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:36:44,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:36:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2018-10-26 19:36:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-26 19:36:44,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:44,243 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:44,246 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:44,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash 211714867, now seen corresponding path program 1 times [2018-10-26 19:36:44,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:44,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:44,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:44,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:44,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:44,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:36:44,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:36:44,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 19:36:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 19:36:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:36:44,550 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2018-10-26 19:36:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:44,577 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2018-10-26 19:36:44,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:36:44,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 82 [2018-10-26 19:36:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:44,588 INFO L225 Difference]: With dead ends: 101 [2018-10-26 19:36:44,589 INFO L226 Difference]: Without dead ends: 81 [2018-10-26 19:36:44,592 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 [2018-10-26 19:36:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-26 19:36:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-26 19:36:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-26 19:36:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-26 19:36:44,633 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 82 [2018-10-26 19:36:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:44,635 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-26 19:36:44,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 19:36:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-26 19:36:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-26 19:36:44,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:44,638 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:44,639 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:44,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:44,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1243526489, now seen corresponding path program 1 times [2018-10-26 19:36:44,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:44,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:44,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:44,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:44,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:46,331 WARN L179 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 10 [2018-10-26 19:36:46,793 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 23 [2018-10-26 19:36:47,064 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 24 [2018-10-26 19:36:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:47,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:36:47,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-26 19:36:47,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 19:36:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 19:36:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:36:47,307 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 15 states. [2018-10-26 19:36:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:48,162 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2018-10-26 19:36:48,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 19:36:48,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 84 [2018-10-26 19:36:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:48,166 INFO L225 Difference]: With dead ends: 115 [2018-10-26 19:36:48,166 INFO L226 Difference]: Without dead ends: 105 [2018-10-26 19:36:48,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-10-26 19:36:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-26 19:36:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 95. [2018-10-26 19:36:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-26 19:36:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2018-10-26 19:36:48,179 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 84 [2018-10-26 19:36:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:48,179 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2018-10-26 19:36:48,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 19:36:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2018-10-26 19:36:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-26 19:36:48,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:48,181 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:48,181 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:48,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 734053399, now seen corresponding path program 1 times [2018-10-26 19:36:48,182 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:48,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:48,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:48,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:48,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:36:48,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:36:48,364 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:36:48,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:48,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:36:48,468 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 6 treesize of output 5 [2018-10-26 19:36:48,470 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:48,477 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:48,478 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-26 19:36:48,528 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:36:48,528 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:36:48,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 19:36:48,530 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:48,533 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:48,534 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2018-10-26 19:36:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:36:48,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:36:48,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2018-10-26 19:36:48,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 19:36:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 19:36:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:36:48,608 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 14 states. [2018-10-26 19:36:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:49,384 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2018-10-26 19:36:49,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 19:36:49,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2018-10-26 19:36:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:49,386 INFO L225 Difference]: With dead ends: 122 [2018-10-26 19:36:49,386 INFO L226 Difference]: Without dead ends: 103 [2018-10-26 19:36:49,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:36:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-26 19:36:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2018-10-26 19:36:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-26 19:36:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2018-10-26 19:36:49,395 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 84 [2018-10-26 19:36:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:49,396 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2018-10-26 19:36:49,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 19:36:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2018-10-26 19:36:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-26 19:36:49,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:49,397 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:49,397 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:49,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash 952908117, now seen corresponding path program 1 times [2018-10-26 19:36:49,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:49,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:49,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:49,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:49,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:49,898 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 3 [2018-10-26 19:36:50,432 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 9 [2018-10-26 19:36:50,597 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 10 [2018-10-26 19:36:50,815 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 10 [2018-10-26 19:36:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:51,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:36:51,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-10-26 19:36:51,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-26 19:36:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-26 19:36:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-10-26 19:36:51,310 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2018-10-26 19:36:51,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:51,966 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2018-10-26 19:36:51,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 19:36:51,967 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2018-10-26 19:36:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:51,968 INFO L225 Difference]: With dead ends: 116 [2018-10-26 19:36:51,968 INFO L226 Difference]: Without dead ends: 106 [2018-10-26 19:36:51,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2018-10-26 19:36:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-26 19:36:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2018-10-26 19:36:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-26 19:36:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2018-10-26 19:36:51,977 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 84 [2018-10-26 19:36:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:51,978 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2018-10-26 19:36:51,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-26 19:36:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2018-10-26 19:36:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:36:51,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:51,979 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:51,979 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:51,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1140082873, now seen corresponding path program 1 times [2018-10-26 19:36:51,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:51,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:51,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:51,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:51,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:52,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:36:52,675 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 [2018-10-26 19:36:52,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:52,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:36:52,862 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 16 treesize of output 13 [2018-10-26 19:36:52,869 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 13 treesize of output 12 [2018-10-26 19:36:52,870 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:52,871 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:53,006 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:53,006 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2018-10-26 19:36:53,274 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 36 treesize of output 30 [2018-10-26 19:36:53,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 9 [2018-10-26 19:36:53,291 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:53,294 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:53,297 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:53,297 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2018-10-26 19:36:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:53,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:36:53,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 25 [2018-10-26 19:36:53,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-26 19:36:53,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-26 19:36:53,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2018-10-26 19:36:53,353 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 25 states. [2018-10-26 19:36:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:54,566 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2018-10-26 19:36:54,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 19:36:54,567 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 87 [2018-10-26 19:36:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:54,568 INFO L225 Difference]: With dead ends: 124 [2018-10-26 19:36:54,568 INFO L226 Difference]: Without dead ends: 114 [2018-10-26 19:36:54,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2018-10-26 19:36:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-26 19:36:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2018-10-26 19:36:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-26 19:36:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-10-26 19:36:54,579 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 87 [2018-10-26 19:36:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:54,579 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-10-26 19:36:54,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-26 19:36:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-10-26 19:36:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:36:54,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:54,581 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:54,582 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:54,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash -297934389, now seen corresponding path program 1 times [2018-10-26 19:36:54,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:54,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:54,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:54,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:54,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:56,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:36:56,243 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 [2018-10-26 19:36:56,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:56,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:36:56,337 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 16 treesize of output 13 [2018-10-26 19:36:56,338 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 13 treesize of output 12 [2018-10-26 19:36:56,339 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,340 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,344 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,344 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2018-10-26 19:36:56,574 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 36 treesize of output 30 [2018-10-26 19:36:56,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 9 [2018-10-26 19:36:56,580 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,583 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,586 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:36:56,586 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2018-10-26 19:36:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:36:56,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:36:56,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 29 [2018-10-26 19:36:56,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-26 19:36:56,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-26 19:36:56,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2018-10-26 19:36:56,631 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 29 states. [2018-10-26 19:36:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:36:58,269 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2018-10-26 19:36:58,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 19:36:58,271 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 87 [2018-10-26 19:36:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:36:58,273 INFO L225 Difference]: With dead ends: 128 [2018-10-26 19:36:58,273 INFO L226 Difference]: Without dead ends: 118 [2018-10-26 19:36:58,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2018-10-26 19:36:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-26 19:36:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2018-10-26 19:36:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-26 19:36:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2018-10-26 19:36:58,283 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 87 [2018-10-26 19:36:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:36:58,284 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2018-10-26 19:36:58,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-26 19:36:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2018-10-26 19:36:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-26 19:36:58,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:36:58,287 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:36:58,287 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:36:58,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:36:58,288 INFO L82 PathProgramCache]: Analyzing trace with hash 139632135, now seen corresponding path program 2 times [2018-10-26 19:36:58,288 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:36:58,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:36:58,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:58,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:36:58,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:36:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:36:58,873 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-26 19:36:59,209 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-26 19:36:59,546 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 20 [2018-10-26 19:36:59,852 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 40 [2018-10-26 19:37:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:37:00,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:37:00,470 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 [2018-10-26 19:37:00,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 19:37:01,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:37:01,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:37:01,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:37:01,992 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 16 treesize of output 13 [2018-10-26 19:37:01,994 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 13 treesize of output 12 [2018-10-26 19:37:01,994 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:01,996 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:02,001 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:02,001 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2018-10-26 19:37:02,235 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 36 treesize of output 30 [2018-10-26 19:37:02,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 9 [2018-10-26 19:37:02,237 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:02,243 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:02,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:02,245 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2018-10-26 19:37:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:37:02,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:37:02,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16] total 34 [2018-10-26 19:37:02,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-26 19:37:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-26 19:37:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2018-10-26 19:37:02,307 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 34 states. [2018-10-26 19:37:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:03,877 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2018-10-26 19:37:03,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-26 19:37:03,878 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 93 [2018-10-26 19:37:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:03,879 INFO L225 Difference]: With dead ends: 142 [2018-10-26 19:37:03,879 INFO L226 Difference]: Without dead ends: 132 [2018-10-26 19:37:03,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=447, Invalid=2523, Unknown=0, NotChecked=0, Total=2970 [2018-10-26 19:37:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-26 19:37:03,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2018-10-26 19:37:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-26 19:37:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2018-10-26 19:37:03,889 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 93 [2018-10-26 19:37:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:03,890 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2018-10-26 19:37:03,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-26 19:37:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2018-10-26 19:37:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-26 19:37:03,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:03,891 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:03,891 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:03,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1500763531, now seen corresponding path program 2 times [2018-10-26 19:37:03,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:03,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:03,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:03,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 19:37:03,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:04,440 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 35 [2018-10-26 19:37:04,656 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 28 [2018-10-26 19:37:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:37:05,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:37:05,238 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/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 [2018-10-26 19:37:05,245 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 19:37:06,410 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:37:06,410 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:37:06,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:37:06,523 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 16 treesize of output 13 [2018-10-26 19:37:06,525 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 13 treesize of output 12 [2018-10-26 19:37:06,525 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,528 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,533 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,534 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2018-10-26 19:37:06,801 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 39 treesize of output 33 [2018-10-26 19:37:06,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 9 [2018-10-26 19:37:06,803 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,806 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:06,810 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:9 [2018-10-26 19:37:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:37:06,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:37:06,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 36 [2018-10-26 19:37:06,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-26 19:37:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-26 19:37:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2018-10-26 19:37:06,863 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 36 states. [2018-10-26 19:37:07,890 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2018-10-26 19:37:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:09,366 INFO L93 Difference]: Finished difference Result 187 states and 196 transitions. [2018-10-26 19:37:09,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-26 19:37:09,367 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 93 [2018-10-26 19:37:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:09,367 INFO L225 Difference]: With dead ends: 187 [2018-10-26 19:37:09,368 INFO L226 Difference]: Without dead ends: 177 [2018-10-26 19:37:09,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1089, Invalid=5553, Unknown=0, NotChecked=0, Total=6642 [2018-10-26 19:37:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-26 19:37:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 107. [2018-10-26 19:37:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-26 19:37:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2018-10-26 19:37:09,380 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 93 [2018-10-26 19:37:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:09,382 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2018-10-26 19:37:09,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-26 19:37:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2018-10-26 19:37:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 19:37:09,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:09,383 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:09,384 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:09,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:09,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1151059065, now seen corresponding path program 3 times [2018-10-26 19:37:09,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:09,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:09,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:09,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 19:37:09,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:09,983 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-26 19:37:10,694 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 30 [2018-10-26 19:37:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:37:11,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:37:11,524 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:37:11,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 19:37:13,558 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-26 19:37:13,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:37:13,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:37:13,767 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 16 treesize of output 13 [2018-10-26 19:37:13,772 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 13 treesize of output 12 [2018-10-26 19:37:13,772 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:13,774 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:13,778 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:13,778 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2018-10-26 19:37:14,232 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 36 treesize of output 30 [2018-10-26 19:37:14,242 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 9 [2018-10-26 19:37:14,242 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:14,245 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:14,247 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:14,247 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2018-10-26 19:37:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:37:14,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:37:14,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2018-10-26 19:37:14,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-26 19:37:14,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-26 19:37:14,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2018-10-26 19:37:14,303 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 45 states. [2018-10-26 19:37:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:16,969 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2018-10-26 19:37:16,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-26 19:37:16,970 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 105 [2018-10-26 19:37:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:16,971 INFO L225 Difference]: With dead ends: 166 [2018-10-26 19:37:16,971 INFO L226 Difference]: Without dead ends: 156 [2018-10-26 19:37:16,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=816, Invalid=4734, Unknown=0, NotChecked=0, Total=5550 [2018-10-26 19:37:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-26 19:37:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2018-10-26 19:37:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-26 19:37:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-10-26 19:37:16,985 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 105 [2018-10-26 19:37:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:16,985 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-10-26 19:37:16,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-26 19:37:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-10-26 19:37:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 19:37:16,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:16,987 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:16,987 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:16,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2063971061, now seen corresponding path program 3 times [2018-10-26 19:37:16,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:16,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:16,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:16,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 19:37:16,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:17,638 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-10-26 19:37:18,309 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 49 [2018-10-26 19:37:18,563 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 37 [2018-10-26 19:37:18,772 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 32 [2018-10-26 19:37:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:37:20,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:37:20,015 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:37:20,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 19:37:22,798 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-10-26 19:37:22,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:37:22,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:37:23,101 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 16 treesize of output 13 [2018-10-26 19:37:23,103 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 13 treesize of output 12 [2018-10-26 19:37:23,103 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:23,104 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:23,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:23,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2018-10-26 19:37:24,003 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 34 treesize of output 28 [2018-10-26 19:37:24,005 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 19:37:24,005 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 0 case distinctions, treesize of input 28 treesize of output 17 [2018-10-26 19:37:24,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:37:24,009 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:24,014 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:37:24,015 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:52, output treesize:5 [2018-10-26 19:37:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:37:24,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:37:24,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 24] total 55 [2018-10-26 19:37:24,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-26 19:37:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-26 19:37:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2795, Unknown=0, NotChecked=0, Total=2970 [2018-10-26 19:37:24,079 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 55 states. [2018-10-26 19:37:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:30,357 INFO L93 Difference]: Finished difference Result 168 states and 175 transitions. [2018-10-26 19:37:30,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-26 19:37:30,358 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 105 [2018-10-26 19:37:30,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:30,359 INFO L225 Difference]: With dead ends: 168 [2018-10-26 19:37:30,359 INFO L226 Difference]: Without dead ends: 158 [2018-10-26 19:37:30,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1326, Invalid=10884, Unknown=0, NotChecked=0, Total=12210 [2018-10-26 19:37:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-26 19:37:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 119. [2018-10-26 19:37:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-26 19:37:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2018-10-26 19:37:30,378 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 105 [2018-10-26 19:37:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:30,378 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2018-10-26 19:37:30,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-26 19:37:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2018-10-26 19:37:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-26 19:37:30,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:30,379 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:30,379 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:30,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash -109733625, now seen corresponding path program 4 times [2018-10-26 19:37:30,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:30,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:30,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:30,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 19:37:30,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:37:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:37:30,458 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 19:37:30,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:37:30 BoogieIcfgContainer [2018-10-26 19:37:30,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:37:30,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:37:30,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:37:30,541 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:37:30,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:36:44" (3/4) ... [2018-10-26 19:37:30,545 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 19:37:30,609 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ae21bb79-dcee-41f6-a38e-c4ffafca0354/bin-2019/uautomizer/witness.graphml [2018-10-26 19:37:30,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:37:30,609 INFO L168 Benchmark]: Toolchain (without parser) took 47578.75 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 503.3 MB). Free memory was 959.3 MB in the beginning and 1.4 GB in the end (delta: -419.8 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. [2018-10-26 19:37:30,610 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:37:30,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:37:30,610 INFO L168 Benchmark]: Boogie Preprocessor took 43.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:37:30,611 INFO L168 Benchmark]: RCFGBuilder took 807.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2018-10-26 19:37:30,611 INFO L168 Benchmark]: TraceAbstraction took 46383.26 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 353.4 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -263.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:37:30,611 INFO L168 Benchmark]: Witness Printer took 67.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:37:30,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.02 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 807.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 46383.26 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 353.4 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -263.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] FCALL struct dummy d1, d2; VAL [\old(d1)=80, \old(d1)=74, \old(d2)=79, \old(d2)=75, d1={77:0}, d2={76:0}] [L33] CALL init() VAL [d1={77:0}, d2={76:0}] [L14] FCALL d1.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={77:0}, d2={76:0}] [L15] FCALL d1.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={77:0}, d2={76:0}] [L17] FCALL d2.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={77:0}, d2={76:0}] [L18] RET, FCALL d2.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, d1={77:0}, d2={76:0}] [L33] init() VAL [d1={77:0}, d2={76:0}] [L34] CALL, EXPR get_dummy() VAL [d1={77:0}, d2={76:0}] [L23] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={77:0}, d1={77:0}, d2={76:0}] [L23] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] EXPR get_dummy() VAL [d1={77:0}, d2={76:0}, get_dummy()={77:0}] [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] CALL, EXPR get_dummy() VAL [d1={77:0}, d2={76:0}] [L23] COND TRUE, EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={77:0}, d1={77:0}, d2={76:0}] [L23] RET return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] EXPR get_dummy() VAL [d1={77:0}, d2={76:0}, get_dummy()={77:0}, pd1={77:0}] [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] int i = __VERIFIER_nondet_int(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 VAL [d1={77:0}, d2={76:0}, i=0, pd1={77:0}, pd2={77:0}] [L37] FCALL pd2->array[i] = i VAL [d1={77:0}, d2={76:0}, i=0, pd1={77:0}, pd2={77:0}] [L38] int *pa = &pd1->array[i]; VAL [d1={77:0}, d2={76:0}, i=0, pa={77:8}, pd1={77:0}, pd2={77:0}] [L39] EXPR, FCALL pd2->array[i] VAL [d1={77:0}, d2={76:0}, i=0, pa={77:8}, pd1={77:0}, pd2={77:0}, pd2->array[i]=0] [L39] i = pd2->array[i] - 10 [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-10, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-9, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-9, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-8, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-8, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-7, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-7, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-6, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-6, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-5, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-5, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-4, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-4, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-3, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-3, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-2, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-2, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=-1, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=-1, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=0, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=0, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={77:0}, d2={76:0}, i=1, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] EXPR, FCALL \read(*pa) VAL [\read(*pa)=0, d1={77:0}, d2={76:0}, i=1, pa={77:8}, pd1={77:0}, pd2={77:0}] [L40] COND FALSE !(i <= *pa) [L43] CALL, EXPR check(pd2, i) VAL [\old(i)=1, d1={77:0}, d2={76:0}, s1={77:0}] [L28] EXPR, FCALL s1->array[i] VAL [\old(i)=1, d1={77:0}, d2={76:0}, i=1, s1={77:0}, s1={77:0}, s1->array[i]=0] [L28] RET return s1->array[i] == i; [L43] EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={77:0}, d2={76:0}, i=1, pa={77:8}, pd1={77:0}, pd2={77:0}] [L43] COND TRUE !check(pd2, i) [L50] __VERIFIER_error() VAL [d1={77:0}, d2={76:0}, i=1, pa={77:8}, pd1={77:0}, pd2={77:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 86 locations, 1 error locations. UNSAFE Result, 46.3s OverallTime, 11 OverallIterations, 12 TraceHistogramMax, 18.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 526 SDtfs, 1343 SDslu, 6065 SDs, 0 SdLazy, 11352 SolverSat, 530 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1090 GetRequests, 594 SyntacticMatches, 35 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6251 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=9, 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 230 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 1675 NumberOfCodeBlocks, 1675 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1541 ConstructedInterpolants, 84 QuantifiedInterpolants, 1225820 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1560 ConjunctsInSsa, 243 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 55/488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...