./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:02:28,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:02:28,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:02:28,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:02:28,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:02:28,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:02:28,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:02:28,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:02:28,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:02:28,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:02:28,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:02:28,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:02:28,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:02:28,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:02:28,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:02:28,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:02:28,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:02:28,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:02:28,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:02:28,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:02:28,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:02:28,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:02:28,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:02:28,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:02:28,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:02:28,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:02:28,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:02:28,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:02:28,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:02:28,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:02:28,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:02:28,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:02:28,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:02:28,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:02:28,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:02:28,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:02:28,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:02:28,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:02:28,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:02:28,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:02:28,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:02:28,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:02:28,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:02:28,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:02:28,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:02:28,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:02:28,747 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:02:28,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:02:28,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:02:28,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:02:28,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:02:28,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:02:28,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:02:28,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:02:28,750 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:02:28,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:02:28,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:02:28,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:02:28,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:02:28,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:02:28,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:02:28,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:02:28,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:02:28,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:02:28,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:02:28,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:02:28,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:02:28,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:02:28,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:02:28,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:02:28,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 [2020-10-26 04:02:29,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:02:29,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:02:29,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:02:29,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:02:29,201 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:02:29,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-10-26 04:02:29,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f7d115a/129d3fab2ed24c1ca5024991660a58fb/FLAGacf541bdf [2020-10-26 04:02:30,012 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:02:30,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-10-26 04:02:30,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f7d115a/129d3fab2ed24c1ca5024991660a58fb/FLAGacf541bdf [2020-10-26 04:02:30,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f7d115a/129d3fab2ed24c1ca5024991660a58fb [2020-10-26 04:02:30,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:02:30,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:02:30,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:30,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:02:30,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:02:30,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abcd7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30, skipping insertion in model container [2020-10-26 04:02:30,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:02:30,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:02:30,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:30,710 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:02:30,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:30,789 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:02:30,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30 WrapperNode [2020-10-26 04:02:30,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:30,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:30,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:02:30,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:02:30,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:30,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:02:30,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:02:30,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:02:30,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... [2020-10-26 04:02:30,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:02:30,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:02:30,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:02:30,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:02:30,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:02:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-10-26 04:02:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-10-26 04:02:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-10-26 04:02:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-10-26 04:02:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:02:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:02:31,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:02:31,253 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 04:02:31,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:31 BoogieIcfgContainer [2020-10-26 04:02:31,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:02:31,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:02:31,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:02:31,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:02:31,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:02:30" (1/3) ... [2020-10-26 04:02:31,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd820dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:31, skipping insertion in model container [2020-10-26 04:02:31,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:30" (2/3) ... [2020-10-26 04:02:31,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd820dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:31, skipping insertion in model container [2020-10-26 04:02:31,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:31" (3/3) ... [2020-10-26 04:02:31,269 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2020-10-26 04:02:31,300 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:02:31,313 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-26 04:02:31,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-26 04:02:31,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:02:31,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:02:31,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:02:31,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:02:31,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:02:31,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:02:31,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:02:31,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:02:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-26 04:02:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-26 04:02:31,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:31,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-26 04:02:31,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:31,468 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2020-10-26 04:02:31,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:31,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242576097] [2020-10-26 04:02:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:31,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242576097] [2020-10-26 04:02:31,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:31,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:31,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724282117] [2020-10-26 04:02:31,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:02:31,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:02:31,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:02:31,710 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-10-26 04:02:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:31,875 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-26 04:02:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:02:31,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-10-26 04:02:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:31,888 INFO L225 Difference]: With dead ends: 44 [2020-10-26 04:02:31,889 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 04:02:31,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:02:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 04:02:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-26 04:02:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 04:02:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-26 04:02:31,946 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2020-10-26 04:02:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:31,946 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-26 04:02:31,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:02:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-26 04:02:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 04:02:31,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:31,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:02:31,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:02:31,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2020-10-26 04:02:31,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:31,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820262061] [2020-10-26 04:02:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:02:31,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820262061] [2020-10-26 04:02:31,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:31,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:02:31,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590296322] [2020-10-26 04:02:31,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:02:31,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:02:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:31,986 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2020-10-26 04:02:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:32,013 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-26 04:02:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:02:32,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-26 04:02:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:32,018 INFO L225 Difference]: With dead ends: 41 [2020-10-26 04:02:32,018 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 04:02:32,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 04:02:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-26 04:02:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 04:02:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-26 04:02:32,030 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-10-26 04:02:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:32,031 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-26 04:02:32,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:02:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-26 04:02:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 04:02:32,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:32,032 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:32,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:02:32,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -509849608, now seen corresponding path program 1 times [2020-10-26 04:02:32,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:32,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289951475] [2020-10-26 04:02:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 04:02:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:02:32,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289951475] [2020-10-26 04:02:32,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:32,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 04:02:32,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31415517] [2020-10-26 04:02:32,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 04:02:32,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:32,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:02:32,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:02:32,160 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-10-26 04:02:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:32,304 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2020-10-26 04:02:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 04:02:32,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-26 04:02:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:32,307 INFO L225 Difference]: With dead ends: 84 [2020-10-26 04:02:32,307 INFO L226 Difference]: Without dead ends: 53 [2020-10-26 04:02:32,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:02:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-26 04:02:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-10-26 04:02:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 04:02:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-26 04:02:32,323 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 16 [2020-10-26 04:02:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:32,324 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-26 04:02:32,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 04:02:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-26 04:02:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 04:02:32,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:32,325 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:32,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:02:32,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash -786790687, now seen corresponding path program 1 times [2020-10-26 04:02:32,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:32,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574445271] [2020-10-26 04:02:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 04:02:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 04:02:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 04:02:32,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574445271] [2020-10-26 04:02:32,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:32,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:02:32,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85722891] [2020-10-26 04:02:32,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 04:02:32,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:02:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:32,386 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 3 states. [2020-10-26 04:02:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:32,427 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-26 04:02:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:02:32,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-26 04:02:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:32,430 INFO L225 Difference]: With dead ends: 46 [2020-10-26 04:02:32,430 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 04:02:32,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:02:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 04:02:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-26 04:02:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 04:02:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-26 04:02:32,440 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2020-10-26 04:02:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:32,441 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-26 04:02:32,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 04:02:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-26 04:02:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 04:02:32,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:32,442 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:32,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 04:02:32,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1379292549, now seen corresponding path program 1 times [2020-10-26 04:02:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:32,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680723093] [2020-10-26 04:02:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 04:02:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 04:02:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 04:02:32,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680723093] [2020-10-26 04:02:32,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:32,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:02:32,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666554609] [2020-10-26 04:02:32,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 04:02:32,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:32,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:02:32,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:32,498 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 4 states. [2020-10-26 04:02:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:32,524 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-26 04:02:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:02:32,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 04:02:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:32,526 INFO L225 Difference]: With dead ends: 51 [2020-10-26 04:02:32,526 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 04:02:32,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:02:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 04:02:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-26 04:02:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 04:02:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-26 04:02:32,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 25 [2020-10-26 04:02:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:32,538 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-26 04:02:32,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 04:02:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-26 04:02:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 04:02:32,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:32,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:02:32,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 04:02:32,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1009751068, now seen corresponding path program 1 times [2020-10-26 04:02:32,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:32,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149315819] [2020-10-26 04:02:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 04:02:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 04:02:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-26 04:02:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:02:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-26 04:02:32,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149315819] [2020-10-26 04:02:32,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:02:32,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 04:02:32,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451430247] [2020-10-26 04:02:32,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 04:02:32,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:02:32,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 04:02:32,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:02:32,722 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 8 states. [2020-10-26 04:02:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:02:32,827 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-26 04:02:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 04:02:32,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-26 04:02:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:02:32,829 INFO L225 Difference]: With dead ends: 64 [2020-10-26 04:02:32,829 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 04:02:32,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-26 04:02:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 04:02:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 04:02:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 04:02:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:02:32,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-26 04:02:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:02:32,832 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:02:32,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 04:02:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:02:32,833 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 04:02:32,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 04:02:32,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 04:02:32,981 INFO L274 CegarLoopResult]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,981 INFO L274 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-10-26 04:02:32,982 INFO L274 CegarLoopResult]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,982 INFO L274 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-10-26 04:02:32,982 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,982 INFO L277 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-10-26 04:02:32,982 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,982 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-10-26 04:02:32,983 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-10-26 04:02:32,983 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,983 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,984 INFO L274 CegarLoopResult]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,984 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,984 INFO L270 CegarLoopResult]: At program point L14-6(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-10-26 04:02:32,984 INFO L274 CegarLoopResult]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,985 INFO L274 CegarLoopResult]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,985 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,985 INFO L274 CegarLoopResult]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,985 INFO L270 CegarLoopResult]: At program point L14-8(line 14) the Hoare annotation is: (not (<= |rec1_#in~i| 0)) [2020-10-26 04:02:32,985 INFO L274 CegarLoopResult]: For program point L14-9(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,985 INFO L274 CegarLoopResult]: For program point L14-10(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point L14-11(line 14) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,986 INFO L274 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-10-26 04:02:32,987 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= rec2_~j 2147483647) (<= 1 rec2_~j))) [2020-10-26 04:02:32,987 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,987 INFO L270 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (or (not (<= |rec2_#in~j| 2147483647)) (and (<= rec2_~j 2147483647) (<= 1 rec2_~j) (<= |rec2_#t~ret3| 0))) [2020-10-26 04:02:32,987 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,987 INFO L274 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,987 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,987 INFO L277 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-26 04:02:32,988 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 04:02:32,989 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-26 04:02:32,989 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-26 04:02:32,989 INFO L274 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-10-26 04:02:32,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:02:32 BoogieIcfgContainer [2020-10-26 04:02:32,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:02:32,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:02:32,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:02:32,998 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:02:32,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:31" (3/4) ... [2020-10-26 04:02:33,002 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 04:02:33,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2020-10-26 04:02:33,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2020-10-26 04:02:33,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-26 04:02:33,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 04:02:33,090 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:02:33,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:02:33,099 INFO L168 Benchmark]: Toolchain (without parser) took 2694.12 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.1 MB in the beginning and 18.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,101 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 39.8 MB. Free memory was 25.5 MB in the beginning and 25.5 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:33,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.90 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.5 MB in the beginning and 24.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.68 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,107 INFO L168 Benchmark]: Boogie Preprocessor took 20.92 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 22.4 MB in the end (delta: 872.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:33,108 INFO L168 Benchmark]: RCFGBuilder took 402.55 ms. Allocated memory is still 48.2 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: -61.8 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,108 INFO L168 Benchmark]: TraceAbstraction took 1739.11 ms. Allocated memory is still 48.2 MB. Free memory was 22.0 MB in the beginning and 21.5 MB in the end (delta: 519.8 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,109 INFO L168 Benchmark]: Witness Printer took 92.97 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 18.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:33,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 39.8 MB. Free memory was 25.5 MB in the beginning and 25.5 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.90 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.5 MB in the beginning and 24.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.68 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.92 ms. Allocated memory is still 48.2 MB. Free memory was 23.2 MB in the beginning and 22.4 MB in the end (delta: 872.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 402.55 ms. Allocated memory is still 48.2 MB. Free memory was 22.3 MB in the beginning and 22.3 MB in the end (delta: -61.8 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1739.11 ms. Allocated memory is still 48.2 MB. Free memory was 22.0 MB in the beginning and 21.5 MB in the end (delta: 519.8 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 92.97 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 18.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 54 SDslu, 493 SDs, 0 SdLazy, 125 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, 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, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 47 PreInvPairs, 51 NumberOfFragments, 44 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 47/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...