./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/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 0497b69437c9ebb889888bdb31aaefcc8eaad029 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:43:41,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:43:41,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:43:41,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:43:41,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:43:41,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:43:41,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:43:41,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:43:41,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:43:41,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:43:41,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:43:41,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:43:41,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:43:41,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:43:41,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:43:41,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:43:41,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:43:41,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:43:41,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:43:41,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:43:41,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:43:41,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:43:41,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:43:41,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:43:41,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:43:41,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:43:41,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:43:41,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:43:41,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:43:41,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:43:41,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:43:41,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:43:41,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:43:41,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:43:41,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:43:41,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:43:41,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:43:41,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:43:41,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:43:41,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:43:41,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:43:41,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:43:41,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:43:41,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:43:41,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:43:41,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:43:41,462 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:43:41,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:43:41,463 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:43:41,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:43:41,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:43:41,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:43:41,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:43:41,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:43:41,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:43:41,465 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:43:41,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:43:41,466 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:43:41,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:43:41,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:43:41,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:43:41,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:43:41,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:43:41,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:43:41,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:43:41,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:43:41,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:43:41,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:43:41,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:43:41,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:43:41,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/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 -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2019-11-15 22:43:41,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:43:41,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:43:41,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:43:41,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:43:41,524 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:43:41,525 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd01-1.c [2019-11-15 22:43:41,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/data/5302cdd88/b45b87d9c41c437fb5a6ccaec22e04b7/FLAGa9e040719 [2019-11-15 22:43:42,080 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:43:42,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/sv-benchmarks/c/recursive/gcd01-1.c [2019-11-15 22:43:42,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/data/5302cdd88/b45b87d9c41c437fb5a6ccaec22e04b7/FLAGa9e040719 [2019-11-15 22:43:42,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/data/5302cdd88/b45b87d9c41c437fb5a6ccaec22e04b7 [2019-11-15 22:43:42,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:43:42,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:43:42,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:43:42,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:43:42,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:43:42,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5366b4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42, skipping insertion in model container [2019-11-15 22:43:42,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:43:42,527 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:43:42,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:43:42,715 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:43:42,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:43:42,839 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:43:42,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42 WrapperNode [2019-11-15 22:43:42,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:43:42,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:43:42,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:43:42,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:43:42,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:43:42,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:43:42,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:43:42,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:43:42,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... [2019-11-15 22:43:42,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:43:42,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:43:42,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:43:42,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:43:42,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/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 [2019-11-15 22:43:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-11-15 22:43:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-11-15 22:43:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:43:43,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:43:43,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:43:43,241 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 22:43:43,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:43:43 BoogieIcfgContainer [2019-11-15 22:43:43,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:43:43,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:43:43,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:43:43,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:43:43,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:43:42" (1/3) ... [2019-11-15 22:43:43,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5f283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:43:43, skipping insertion in model container [2019-11-15 22:43:43,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:43:42" (2/3) ... [2019-11-15 22:43:43,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5f283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:43:43, skipping insertion in model container [2019-11-15 22:43:43,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:43:43" (3/3) ... [2019-11-15 22:43:43,253 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2019-11-15 22:43:43,266 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:43:43,276 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:43:43,302 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:43:43,357 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:43:43,357 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:43:43,358 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:43:43,372 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:43:43,372 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:43:43,373 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:43:43,373 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:43:43,373 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:43:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-15 22:43:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:43:43,404 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:43,421 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:43,423 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash -540428153, now seen corresponding path program 1 times [2019-11-15 22:43:43,440 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:43,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268692400] [2019-11-15 22:43:43,441 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:43,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:43,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:43:43,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268692400] [2019-11-15 22:43:43,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:43,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:43:43,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917181234] [2019-11-15 22:43:43,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:43:43,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:43,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:43:43,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:43:43,809 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2019-11-15 22:43:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:44,025 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-11-15 22:43:44,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:43:44,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 22:43:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:44,047 INFO L225 Difference]: With dead ends: 36 [2019-11-15 22:43:44,048 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 22:43:44,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 22:43:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-15 22:43:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 22:43:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-15 22:43:44,128 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-11-15 22:43:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:44,130 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-15 22:43:44,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:43:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-15 22:43:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:43:44,135 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:44,136 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:44,136 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:44,137 INFO L82 PathProgramCache]: Analyzing trace with hash 999682999, now seen corresponding path program 1 times [2019-11-15 22:43:44,138 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:44,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418901017] [2019-11-15 22:43:44,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:43:44,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418901017] [2019-11-15 22:43:44,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:44,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:43:44,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285839626] [2019-11-15 22:43:44,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:43:44,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:44,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:43:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:43:44,248 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2019-11-15 22:43:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:44,346 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-15 22:43:44,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:43:44,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 22:43:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:44,351 INFO L225 Difference]: With dead ends: 26 [2019-11-15 22:43:44,351 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 22:43:44,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 22:43:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-15 22:43:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 22:43:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-15 22:43:44,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2019-11-15 22:43:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:44,365 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-15 22:43:44,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:43:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-11-15 22:43:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 22:43:44,368 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:44,368 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:44,369 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:44,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1243478463, now seen corresponding path program 1 times [2019-11-15 22:43:44,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:44,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807138473] [2019-11-15 22:43:44,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:43:44,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807138473] [2019-11-15 22:43:44,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:44,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:43:44,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694090889] [2019-11-15 22:43:44,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:43:44,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:44,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:43:44,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:44,555 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2019-11-15 22:43:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:44,751 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2019-11-15 22:43:44,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:43:44,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-15 22:43:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:44,755 INFO L225 Difference]: With dead ends: 32 [2019-11-15 22:43:44,755 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 22:43:44,756 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:43:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 22:43:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-15 22:43:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 22:43:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-15 22:43:44,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2019-11-15 22:43:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:44,771 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-15 22:43:44,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:43:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-15 22:43:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 22:43:44,776 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:44,776 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:44,776 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash -102281283, now seen corresponding path program 1 times [2019-11-15 22:43:44,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:44,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361988697] [2019-11-15 22:43:44,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:44,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:43:44,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361988697] [2019-11-15 22:43:44,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:44,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:43:44,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729997480] [2019-11-15 22:43:44,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:43:44,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:44,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:43:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:44,964 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2019-11-15 22:43:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:45,172 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-15 22:43:45,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:43:45,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-15 22:43:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:45,176 INFO L225 Difference]: With dead ends: 32 [2019-11-15 22:43:45,176 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 22:43:45,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:43:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 22:43:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-15 22:43:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 22:43:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-15 22:43:45,184 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 19 [2019-11-15 22:43:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:45,188 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-15 22:43:45,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:43:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-15 22:43:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 22:43:45,191 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:45,191 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:45,191 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1914749337, now seen corresponding path program 1 times [2019-11-15 22:43:45,192 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:45,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077854325] [2019-11-15 22:43:45,192 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 22:43:45,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077854325] [2019-11-15 22:43:45,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:45,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:43:45,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107821346] [2019-11-15 22:43:45,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:43:45,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:45,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:43:45,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:45,333 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2019-11-15 22:43:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:45,416 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-11-15 22:43:45,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:43:45,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-15 22:43:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:45,418 INFO L225 Difference]: With dead ends: 27 [2019-11-15 22:43:45,419 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 22:43:45,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:43:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 22:43:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-15 22:43:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 22:43:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-15 22:43:45,427 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 20 [2019-11-15 22:43:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:45,427 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-15 22:43:45,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:43:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-15 22:43:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 22:43:45,429 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:45,429 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:45,430 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -675898105, now seen corresponding path program 1 times [2019-11-15 22:43:45,431 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:45,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331008438] [2019-11-15 22:43:45,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:43:45,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331008438] [2019-11-15 22:43:45,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:45,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:43:45,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119576833] [2019-11-15 22:43:45,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:43:45,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:43:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:43:45,540 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2019-11-15 22:43:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:45,624 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-15 22:43:45,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:43:45,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-11-15 22:43:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:45,626 INFO L225 Difference]: With dead ends: 30 [2019-11-15 22:43:45,626 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 22:43:45,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:43:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 22:43:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 22:43:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 22:43:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-15 22:43:45,637 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2019-11-15 22:43:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:45,638 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-15 22:43:45,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:43:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-15 22:43:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-15 22:43:45,639 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:43:45,640 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:43:45,644 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:43:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:43:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash -482715817, now seen corresponding path program 1 times [2019-11-15 22:43:45,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:43:45,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295695048] [2019-11-15 22:43:45,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:43:45,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:43:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:43:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-15 22:43:45,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295695048] [2019-11-15 22:43:45,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:43:45,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:43:45,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483062161] [2019-11-15 22:43:45,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:43:45,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:43:45,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:43:45,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:43:45,846 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2019-11-15 22:43:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:43:45,955 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-15 22:43:45,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:43:45,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-15 22:43:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:43:45,957 INFO L225 Difference]: With dead ends: 26 [2019-11-15 22:43:45,957 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:43:45,958 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:43:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:43:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:43:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:43:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:43:45,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-15 22:43:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:43:45,959 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:43:45,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:43:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:43:45,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:43:45,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 22:43:46,072 INFO L443 ceAbstractionStarter]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2019-11-15 22:43:46,072 INFO L443 ceAbstractionStarter]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2019-11-15 22:43:46,073 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= 1 gcd_~y1) (<= (+ gcd_~y1 1) gcd_~y2)) [2019-11-15 22:43:46,073 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-15 22:43:46,073 INFO L446 ceAbstractionStarter]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2019-11-15 22:43:46,073 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y2 1) gcd_~y1)) [2019-11-15 22:43:46,073 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 32) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 22:43:46,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 22:43:46,075 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-15 22:43:46,075 INFO L446 ceAbstractionStarter]: At program point L41(lines 28 43) the Hoare annotation is: true [2019-11-15 22:43:46,075 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-15 22:43:46,075 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2019-11-15 22:43:46,076 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~m~0) (<= 1 ULTIMATE.start_main_~n~0)) [2019-11-15 22:43:46,076 INFO L443 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-15 22:43:46,076 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-11-15 22:43:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:43:46 BoogieIcfgContainer [2019-11-15 22:43:46,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:43:46,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:43:46,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:43:46,089 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:43:46,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:43:43" (3/4) ... [2019-11-15 22:43:46,094 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:43:46,102 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-11-15 22:43:46,109 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 22:43:46,109 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:43:46,161 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d2c5f6d-984e-472e-b1a6-619e906a624f/bin/uautomizer/witness.graphml [2019-11-15 22:43:46,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:43:46,164 INFO L168 Benchmark]: Toolchain (without parser) took 3676.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 945.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 142.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,165 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:43:46,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,167 INFO L168 Benchmark]: Boogie Preprocessor took 40.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:43:46,168 INFO L168 Benchmark]: RCFGBuilder took 317.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,168 INFO L168 Benchmark]: TraceAbstraction took 2843.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.6 MB in the end (delta: 158.7 MB). Peak memory consumption was 158.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,169 INFO L168 Benchmark]: Witness Printer took 73.49 ms. Allocated memory is still 1.2 GB. Free memory was 952.6 MB in the beginning and 945.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:43:46,172 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 317.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2843.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 952.6 MB in the end (delta: 158.7 MB). Peak memory consumption was 158.7 MB. Max. memory is 11.5 GB. * Witness Printer took 73.49 ms. Allocated memory is still 1.2 GB. Free memory was 952.6 MB in the beginning and 945.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 112 SDtfs, 96 SDslu, 351 SDs, 0 SdLazy, 300 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 5212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 34/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...