./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/odd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loop-invariants/odd.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0150d0ee9b9ae3758be926b566349c1f8c8a0ebd ................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:31:07,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:31:07,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:31:07,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:31:07,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:31:07,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:31:07,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:31:07,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:31:07,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:31:07,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:31:07,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:31:07,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:31:07,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:31:07,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:31:07,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:31:07,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:31:07,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:31:07,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:31:07,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:31:07,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:31:07,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:31:07,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:31:07,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:31:07,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:31:07,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:31:07,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:31:07,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:31:07,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:31:07,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:31:07,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:31:07,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:31:07,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:31:07,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:31:07,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:31:07,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:31:07,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:31:07,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:31:07,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:31:07,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:31:07,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:31:07,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:31:07,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:31:07,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:31:07,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:31:07,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:31:07,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:31:07,942 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:31:07,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:31:07,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:31:07,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:31:07,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:31:07,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:31:07,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:31:07,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:31:07,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:31:07,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:31:07,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:31:07,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:31:07,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:31:07,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:31:07,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:31:07,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:31:07,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:31:07,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:31:07,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:31:07,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:31:07,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:31:07,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:31:07,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:31:07,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:31:07,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:31:07,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0150d0ee9b9ae3758be926b566349c1f8c8a0ebd [2020-10-25 22:31:08,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:31:08,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:31:08,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:31:08,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:31:08,431 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:31:08,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/odd.c [2020-10-25 22:31:08,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffde5f50/d75e2f53cb6843f8ab0d404b419497ef/FLAG721091d7e [2020-10-25 22:31:09,208 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:31:09,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/odd.c [2020-10-25 22:31:09,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffde5f50/d75e2f53cb6843f8ab0d404b419497ef/FLAG721091d7e [2020-10-25 22:31:09,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffde5f50/d75e2f53cb6843f8ab0d404b419497ef [2020-10-25 22:31:09,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:31:09,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:31:09,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:31:09,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:31:09,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:31:09,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c888e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09, skipping insertion in model container [2020-10-25 22:31:09,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:31:09,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:31:09,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:31:09,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:31:09,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:31:09,905 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:31:09,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09 WrapperNode [2020-10-25 22:31:09,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:31:09,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:31:09,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:31:09,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:31:09,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:31:09,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:31:09,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:31:09,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:31:09,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (1/1) ... [2020-10-25 22:31:09,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:31:09,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:31:09,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:31:09,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:31:09,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (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 [2020-10-25 22:31:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:31:10,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:31:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:31:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:31:10,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:31:10,528 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:31:10,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:10 BoogieIcfgContainer [2020-10-25 22:31:10,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:31:10,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:31:10,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:31:10,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:31:10,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:31:09" (1/3) ... [2020-10-25 22:31:10,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db52025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:31:10, skipping insertion in model container [2020-10-25 22:31:10,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:31:09" (2/3) ... [2020-10-25 22:31:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db52025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:31:10, skipping insertion in model container [2020-10-25 22:31:10,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:10" (3/3) ... [2020-10-25 22:31:10,542 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2020-10-25 22:31:10,556 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:31:10,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:31:10,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:31:10,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:31:10,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:31:10,633 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:31:10,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:31:10,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:31:10,633 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:31:10,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:31:10,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:31:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-25 22:31:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 22:31:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:10,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 22:31:10,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:10,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:10,676 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2020-10-25 22:31:10,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:10,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918396790] [2020-10-25 22:31:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:10,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918396790] [2020-10-25 22:31:10,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:31:10,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:31:10,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828151835] [2020-10-25 22:31:10,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:31:10,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:31:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:31:10,950 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-25 22:31:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:10,971 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-25 22:31:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:31:10,973 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 22:31:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:10,984 INFO L225 Difference]: With dead ends: 21 [2020-10-25 22:31:10,985 INFO L226 Difference]: Without dead ends: 8 [2020-10-25 22:31:10,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:31:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-25 22:31:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-25 22:31:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-25 22:31:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-25 22:31:11,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-10-25 22:31:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:11,042 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-25 22:31:11,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:31:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-25 22:31:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:31:11,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:11,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:31:11,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:31:11,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:11,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1806847180, now seen corresponding path program 1 times [2020-10-25 22:31:11,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:11,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735411011] [2020-10-25 22:31:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:11,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735411011] [2020-10-25 22:31:11,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:31:11,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:31:11,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778710479] [2020-10-25 22:31:11,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:31:11,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:31:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:31:11,238 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-10-25 22:31:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:11,303 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-25 22:31:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:31:11,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-25 22:31:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:11,305 INFO L225 Difference]: With dead ends: 14 [2020-10-25 22:31:11,306 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 22:31:11,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:31:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 22:31:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 22:31:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 22:31:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-25 22:31:11,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-10-25 22:31:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:11,314 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-25 22:31:11,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:31:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-25 22:31:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 22:31:11,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:31:11,316 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:31:11,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:31:11,317 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:31:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:31:11,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1262026695, now seen corresponding path program 1 times [2020-10-25 22:31:11,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:31:11,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133914477] [2020-10-25 22:31:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:31:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:11,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133914477] [2020-10-25 22:31:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496252907] [2020-10-25 22:31:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:31:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:31:11,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 22:31:11,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:31:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:31:11,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:31:11,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 22:31:11,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199701490] [2020-10-25 22:31:11,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:31:11,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:31:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:31:11,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:31:11,563 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2020-10-25 22:31:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:31:11,616 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-10-25 22:31:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:31:11,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-25 22:31:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:31:11,617 INFO L225 Difference]: With dead ends: 14 [2020-10-25 22:31:11,617 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:31:11,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:31:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:31:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:31:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:31:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:31:11,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-25 22:31:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:31:11,620 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:31:11,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:31:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:31:11,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:31:11,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 22:31:11,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:31:11,860 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:31:11,860 INFO L277 CegarLoopResult]: At program point L17(lines 11 18) the Hoare annotation is: true [2020-10-25 22:31:11,860 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L270 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div ULTIMATE.start_main_~x~0 2)) 1) ULTIMATE.start_main_~x~0) [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:31:11,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:31:11,862 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-25 22:31:11,862 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-10-25 22:31:11,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:31:11 BoogieIcfgContainer [2020-10-25 22:31:11,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:31:11,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:31:11,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:31:11,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:31:11,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:31:10" (3/4) ... [2020-10-25 22:31:11,887 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:31:11,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-25 22:31:11,900 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-25 22:31:11,900 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 22:31:11,900 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:31:11,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:31:11,944 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:31:11,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:31:11,947 INFO L168 Benchmark]: Toolchain (without parser) took 2374.27 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 18.1 MB in the beginning and 27.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,948 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 27.1 MB in the beginning and 27.1 MB in the end (delta: 20.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:31:11,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.75 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 25.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.91 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 24.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:31:11,950 INFO L168 Benchmark]: Boogie Preprocessor took 25.02 ms. Allocated memory is still 50.3 MB. Free memory was 24.4 MB in the beginning and 23.5 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,951 INFO L168 Benchmark]: RCFGBuilder took 557.64 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 24.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,952 INFO L168 Benchmark]: TraceAbstraction took 1347.35 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 30.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,953 INFO L168 Benchmark]: Witness Printer took 62.82 ms. Allocated memory is still 60.8 MB. Free memory was 30.2 MB in the beginning and 27.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:31:11,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 27.1 MB in the beginning and 27.1 MB in the end (delta: 20.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.75 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 25.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.91 ms. Allocated memory is still 50.3 MB. Free memory was 25.9 MB in the beginning and 24.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.02 ms. Allocated memory is still 50.3 MB. Free memory was 24.4 MB in the beginning and 23.5 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 557.64 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 24.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1347.35 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 30.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.82 ms. Allocated memory is still 60.8 MB. Free memory was 30.2 MB in the beginning and 27.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 22 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 11 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 573 SizeOfPredicates, 3 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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...