./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/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 0.1.25-f470102 [2019-12-07 17:31:27,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:31:27,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:31:27,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:31:27,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:31:27,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:31:27,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:31:27,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:31:27,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:31:27,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:31:27,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:31:27,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:31:27,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:31:27,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:31:27,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:31:27,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:31:27,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:31:27,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:31:27,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:31:27,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:31:27,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:31:27,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:31:27,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:31:27,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:31:27,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:31:27,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:31:27,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:31:27,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:31:27,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:31:27,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:31:27,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:31:27,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:31:27,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:31:27,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:31:27,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:31:27,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:31:27,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:31:27,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:31:27,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:31:27,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:31:27,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:31:27,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:31:27,684 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:31:27,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:31:27,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:31:27,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:31:27,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:31:27,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:31:27,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:31:27,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:31:27,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:31:27,688 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_fdd1cc37-581a-444d-b2fb-560914c031fa/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 [2019-12-07 17:31:27,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:31:27,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:31:27,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:31:27,803 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:31:27,803 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:31:27,804 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd01-1.c [2019-12-07 17:31:27,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/data/b111da343/46412e58b2b34276a292a161ded5233f/FLAG9cd13ac00 [2019-12-07 17:31:28,309 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:31:28,310 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/sv-benchmarks/c/recursive/gcd01-1.c [2019-12-07 17:31:28,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/data/b111da343/46412e58b2b34276a292a161ded5233f/FLAG9cd13ac00 [2019-12-07 17:31:28,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/data/b111da343/46412e58b2b34276a292a161ded5233f [2019-12-07 17:31:28,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:31:28,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:31:28,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:28,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:31:28,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:31:28,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:28,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fae70f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28, skipping insertion in model container [2019-12-07 17:31:28,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:28,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:31:28,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:31:28,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:28,947 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:31:28,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:31:28,999 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:31:28,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28 WrapperNode [2019-12-07 17:31:28,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:31:29,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:29,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:31:29,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:31:29,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:31:29,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:31:29,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:31:29,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:31:29,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... [2019-12-07 17:31:29,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:31:29,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:31:29,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:31:29,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:31:29,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/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 [2019-12-07 17:31:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-12-07 17:31:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-12-07 17:31:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:31:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:31:29,177 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:31:29,177 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:31:29,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:29 BoogieIcfgContainer [2019-12-07 17:31:29,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:31:29,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:31:29,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:31:29,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:31:29,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:31:28" (1/3) ... [2019-12-07 17:31:29,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8fe54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:29, skipping insertion in model container [2019-12-07 17:31:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:31:28" (2/3) ... [2019-12-07 17:31:29,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8fe54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:31:29, skipping insertion in model container [2019-12-07 17:31:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:29" (3/3) ... [2019-12-07 17:31:29,182 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2019-12-07 17:31:29,189 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:31:29,193 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:31:29,200 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:31:29,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:31:29,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:31:29,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:31:29,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:31:29,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:31:29,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:31:29,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:31:29,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:31:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-12-07 17:31:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:31:29,230 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,230 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,230 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,234 INFO L82 PathProgramCache]: Analyzing trace with hash -540428153, now seen corresponding path program 1 times [2019-12-07 17:31:29,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831918095] [2019-12-07 17:31:29,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:31:29,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831918095] [2019-12-07 17:31:29,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:29,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 17:31:29,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124456570] [2019-12-07 17:31:29,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:31:29,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:29,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:31:29,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:31:29,400 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2019-12-07 17:31:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:29,477 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-12-07 17:31:29,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:31:29,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 17:31:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:29,484 INFO L225 Difference]: With dead ends: 36 [2019-12-07 17:31:29,484 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 17:31:29,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:31:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 17:31:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 17:31:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:31:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-12-07 17:31:29,513 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-12-07 17:31:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:29,514 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 17:31:29,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:31:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-12-07 17:31:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:31:29,515 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,515 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,515 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash 999682999, now seen corresponding path program 1 times [2019-12-07 17:31:29,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349354528] [2019-12-07 17:31:29,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:31:29,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349354528] [2019-12-07 17:31:29,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:29,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 17:31:29,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729840458] [2019-12-07 17:31:29,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:31:29,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:31:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:31:29,562 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2019-12-07 17:31:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:29,593 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-12-07 17:31:29,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:31:29,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 17:31:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:29,594 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:31:29,594 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 17:31:29,594 INFO L630 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 [2019-12-07 17:31:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 17:31:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-12-07 17:31:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:31:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-12-07 17:31:29,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2019-12-07 17:31:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:29,599 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 17:31:29,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:31:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-12-07 17:31:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:31:29,600 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,600 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,600 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1243478463, now seen corresponding path program 1 times [2019-12-07 17:31:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255158977] [2019-12-07 17:31:29,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 17:31:29,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255158977] [2019-12-07 17:31:29,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:29,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:31:29,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695267015] [2019-12-07 17:31:29,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:31:29,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:31:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:31:29,666 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2019-12-07 17:31:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:29,736 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2019-12-07 17:31:29,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:31:29,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 17:31:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:29,737 INFO L225 Difference]: With dead ends: 32 [2019-12-07 17:31:29,738 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 17:31:29,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:31:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 17:31:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-12-07 17:31:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 17:31:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-12-07 17:31:29,743 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2019-12-07 17:31:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:29,743 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 17:31:29,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:31:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-12-07 17:31:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:31:29,744 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,744 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,744 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -102281283, now seen corresponding path program 1 times [2019-12-07 17:31:29,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274690037] [2019-12-07 17:31:29,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 17:31:29,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274690037] [2019-12-07 17:31:29,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:29,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:31:29,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822612709] [2019-12-07 17:31:29,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:31:29,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:29,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:31:29,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:31:29,812 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2019-12-07 17:31:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:29,883 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-12-07 17:31:29,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:31:29,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 17:31:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:29,884 INFO L225 Difference]: With dead ends: 32 [2019-12-07 17:31:29,884 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 17:31:29,884 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:31:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 17:31:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-12-07 17:31:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:31:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-12-07 17:31:29,888 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 19 [2019-12-07 17:31:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:29,889 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-12-07 17:31:29,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:31:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-12-07 17:31:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:31:29,889 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,889 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,890 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1914749337, now seen corresponding path program 1 times [2019-12-07 17:31:29,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388512759] [2019-12-07 17:31:29,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 17:31:29,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388512759] [2019-12-07 17:31:29,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:29,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:31:29,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718736493] [2019-12-07 17:31:29,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:31:29,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:29,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:31:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:31:29,940 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2019-12-07 17:31:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:29,972 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-12-07 17:31:29,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:31:29,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-12-07 17:31:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:29,973 INFO L225 Difference]: With dead ends: 27 [2019-12-07 17:31:29,973 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:31:29,974 INFO L630 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 [2019-12-07 17:31:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:31:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-12-07 17:31:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 17:31:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 17:31:29,977 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 20 [2019-12-07 17:31:29,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:29,977 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 17:31:29,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:31:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 17:31:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:31:29,978 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:29,978 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:29,978 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:29,978 INFO L82 PathProgramCache]: Analyzing trace with hash -675898105, now seen corresponding path program 1 times [2019-12-07 17:31:29,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:29,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031614966] [2019-12-07 17:31:29,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 17:31:30,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031614966] [2019-12-07 17:31:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:30,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:31:30,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182434082] [2019-12-07 17:31:30,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:31:30,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:31:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:31:30,020 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2019-12-07 17:31:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:30,053 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-12-07 17:31:30,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:31:30,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-12-07 17:31:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:30,055 INFO L225 Difference]: With dead ends: 30 [2019-12-07 17:31:30,055 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:31:30,055 INFO L630 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 [2019-12-07 17:31:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:31:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 17:31:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:31:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 17:31:30,059 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2019-12-07 17:31:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:30,059 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 17:31:30,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:31:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 17:31:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 17:31:30,060 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:31:30,060 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:31:30,061 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:31:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:31:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash -482715817, now seen corresponding path program 1 times [2019-12-07 17:31:30,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:31:30,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320071752] [2019-12-07 17:31:30,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:31:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:31:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-12-07 17:31:30,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320071752] [2019-12-07 17:31:30,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:31:30,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 17:31:30,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420876850] [2019-12-07 17:31:30,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:31:30,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:31:30,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:31:30,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:31:30,120 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2019-12-07 17:31:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:31:30,155 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-12-07 17:31:30,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:31:30,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-12-07 17:31:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:31:30,156 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:31:30,156 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:31:30,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:31:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:31:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:31:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:31:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:31:30,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-12-07 17:31:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:31:30,158 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:31:30,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:31:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:31:30,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:31:30,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:31:30,197 INFO L246 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2019-12-07 17:31:30,197 INFO L246 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2019-12-07 17:31:30,197 INFO L242 CegarLoopResult]: 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)) [2019-12-07 17:31:30,197 INFO L246 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L249 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2019-12-07 17:31:30,198 INFO L242 CegarLoopResult]: 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)) [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:31:30,198 INFO L246 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L249 CegarLoopResult]: At program point L41(lines 28 43) the Hoare annotation is: true [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L242 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~m~0) (<= 1 ULTIMATE.start_main_~n~0)) [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-12-07 17:31:30,199 INFO L246 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-12-07 17:31:30,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:31:30 BoogieIcfgContainer [2019-12-07 17:31:30,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:31:30,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:31:30,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:31:30,206 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:31:30,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:31:29" (3/4) ... [2019-12-07 17:31:30,209 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:31:30,213 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-12-07 17:31:30,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 17:31:30,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:31:30,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fdd1cc37-581a-444d-b2fb-560914c031fa/bin/uautomizer/witness.graphml [2019-12-07 17:31:30,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:31:30,249 INFO L168 Benchmark]: Toolchain (without parser) took 1419.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 938.0 MB in the beginning and 917.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 128.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,249 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:30,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:31:30,250 INFO L168 Benchmark]: Boogie Preprocessor took 11.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,250 INFO L168 Benchmark]: RCFGBuilder took 146.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,251 INFO L168 Benchmark]: TraceAbstraction took 1027.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.5 MB in the end (delta: 162.0 MB). Peak memory consumption was 162.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,251 INFO L168 Benchmark]: Witness Printer took 41.38 ms. Allocated memory is still 1.1 GB. Free memory was 922.5 MB in the beginning and 917.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:31:30,253 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 146.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1027.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.5 MB in the end (delta: 162.0 MB). Peak memory consumption was 162.0 MB. Max. memory is 11.5 GB. * Witness Printer took 41.38 ms. Allocated memory is still 1.1 GB. Free memory was 922.5 MB in the beginning and 917.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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: 0.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 96 SDslu, 351 SDs, 0 SdLazy, 300 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s 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: 0.0s 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, 0.0s SatisfiabilityAnalysisTime, 0.3s 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...