./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_1.i --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-new/count_by_1.i -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 490e26872e4d657862c7b215f56fb6c391045902 .................................................................................................................................................................................................................................................................................................................................................................... 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 22:23:18,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:23:18,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:23:18,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:23:18,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:23:18,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:23:18,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:23:18,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:23:18,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:23:18,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:23:18,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:23:18,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:23:18,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:23:18,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:23:18,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:23:18,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:23:18,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:23:18,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:23:18,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:23:18,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:23:18,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:23:18,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:23:18,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:23:18,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:23:18,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:23:18,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:23:18,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:23:18,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:23:18,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:23:18,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:23:18,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:23:18,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:23:18,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:23:18,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:23:18,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:23:18,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:23:18,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:23:18,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:23:18,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:23:18,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:23:18,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:23:18,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:23:18,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:23:18,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:23:18,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:23:18,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:23:18,820 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:23:18,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:23:18,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:23:18,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:23:18,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:23:18,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:23:18,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:23:18,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:23:18,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:23:18,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:23:18,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:23:18,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:23:18,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:23:18,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:23:18,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:23:18,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:23:18,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:23:18,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:23:18,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:23:18,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:23:18,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:23:18,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:23:18,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:23:18,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:23:18,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:23:18,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 490e26872e4d657862c7b215f56fb6c391045902 [2020-10-25 22:23:19,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:23:19,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:23:19,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:23:19,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:23:19,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:23:19,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1.i [2020-10-25 22:23:19,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95c424bd/50a7d6b5806344d0858520fe54f99b26/FLAG79d9c67fd [2020-10-25 22:23:19,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:23:19,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1.i [2020-10-25 22:23:19,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95c424bd/50a7d6b5806344d0858520fe54f99b26/FLAG79d9c67fd [2020-10-25 22:23:20,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e95c424bd/50a7d6b5806344d0858520fe54f99b26 [2020-10-25 22:23:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:23:20,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:23:20,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:23:20,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:23:20,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:23:20,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f05c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20, skipping insertion in model container [2020-10-25 22:23:20,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:23:20,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:23:20,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:23:20,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:23:20,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:23:20,631 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:23:20,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20 WrapperNode [2020-10-25 22:23:20,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:23:20,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:23:20,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:23:20,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:23:20,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:23:20,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:23:20,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:23:20,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:23:20,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (1/1) ... [2020-10-25 22:23:20,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:23:20,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:23:20,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:23:20,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:23:20,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (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 22:23:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:23:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:23:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:23:21,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:23:21,004 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:23:21,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:23:21 BoogieIcfgContainer [2020-10-25 22:23:21,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:23:21,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:23:21,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:23:21,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:23:21,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:23:20" (1/3) ... [2020-10-25 22:23:21,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef9caf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:23:21, skipping insertion in model container [2020-10-25 22:23:21,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:23:20" (2/3) ... [2020-10-25 22:23:21,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef9caf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:23:21, skipping insertion in model container [2020-10-25 22:23:21,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:23:21" (3/3) ... [2020-10-25 22:23:21,016 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-10-25 22:23:21,037 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:23:21,049 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:23:21,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:23:21,132 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:23:21,132 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:23:21,132 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:23:21,132 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:23:21,132 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:23:21,132 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:23:21,133 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:23:21,133 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:23:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-25 22:23:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:23:21,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:23:21,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:23:21,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:23:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:23:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash 211949486, now seen corresponding path program 1 times [2020-10-25 22:23:21,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:23:21,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653067516] [2020-10-25 22:23:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:23:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:23:21,337 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 22:23:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653067516] [2020-10-25 22:23:21,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:23:21,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:23:21,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401874214] [2020-10-25 22:23:21,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:23:21,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:23:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:23:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:23:21,360 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-10-25 22:23:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:23:21,395 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-10-25 22:23:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:23:21,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-25 22:23:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:23:21,406 INFO L225 Difference]: With dead ends: 27 [2020-10-25 22:23:21,406 INFO L226 Difference]: Without dead ends: 12 [2020-10-25 22:23:21,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:23:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-25 22:23:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-10-25 22:23:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-25 22:23:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-25 22:23:21,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-25 22:23:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:23:21,450 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-25 22:23:21,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:23:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-25 22:23:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:23:21,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:23:21,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:23:21,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:23:21,452 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:23:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:23:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1435847344, now seen corresponding path program 1 times [2020-10-25 22:23:21,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:23:21,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606513459] [2020-10-25 22:23:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:23:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:23:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:23:21,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606513459] [2020-10-25 22:23:21,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517239069] [2020-10-25 22:23:21,510 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 22:23:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:23:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 22:23:21,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:23:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:23:21,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:23:21,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:23:21,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375989319] [2020-10-25 22:23:21,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:23:21,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:23:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:23:21,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:23:21,646 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-10-25 22:23:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:23:21,683 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-25 22:23:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:23:21,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-25 22:23:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:23:21,685 INFO L225 Difference]: With dead ends: 20 [2020-10-25 22:23:21,685 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 22:23:21,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:23:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 22:23:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-25 22:23:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-25 22:23:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-25 22:23:21,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-25 22:23:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:23:21,691 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-25 22:23:21,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:23:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-25 22:23:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:23:21,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:23:21,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:23:21,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 22:23:21,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:23:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:23:21,896 INFO L82 PathProgramCache]: Analyzing trace with hash 780649778, now seen corresponding path program 2 times [2020-10-25 22:23:21,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:23:21,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461774272] [2020-10-25 22:23:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:23:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:23:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 22:23:22,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461774272] [2020-10-25 22:23:22,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:23:22,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 22:23:22,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382619383] [2020-10-25 22:23:22,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:23:22,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:23:22,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:23:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:23:22,009 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-10-25 22:23:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:23:22,037 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-25 22:23:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:23:22,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-25 22:23:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:23:22,038 INFO L225 Difference]: With dead ends: 13 [2020-10-25 22:23:22,038 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:23:22,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-25 22:23:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:23:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:23:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:23:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:23:22,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-25 22:23:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:23:22,040 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:23:22,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:23:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:23:22,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:23:22,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:23:22,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:23:22,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:23:22,068 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-25 22:23:22,068 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:23:22,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:23:22,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:23:22,068 INFO L277 CegarLoopResult]: At program point L28(lines 24 29) the Hoare annotation is: true [2020-10-25 22:23:22,068 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-10-25 22:23:22,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 22:23:22,069 INFO L270 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2020-10-25 22:23:22,069 INFO L274 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-10-25 22:23:22,069 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-25 22:23:22,069 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-25 22:23:22,069 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:23:22,072 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 22:23:22,072 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 22:23:22,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:23:22 BoogieIcfgContainer [2020-10-25 22:23:22,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:23:22,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:23:22,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:23:22,088 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:23:22,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:23:21" (3/4) ... [2020-10-25 22:23:22,092 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:23:22,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 22:23:22,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:23:22,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:23:22,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:23:22,143 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:23:22,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:23:22,145 INFO L168 Benchmark]: Toolchain (without parser) took 1819.00 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.9 MB in the beginning and 31.2 MB in the end (delta: -12.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:23:22,146 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 24.9 MB in the beginning and 24.8 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:23:22,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.10 ms. Allocated memory is still 41.9 MB. Free memory was 27.6 MB in the beginning and 18.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:23:22,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.95 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 35.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:23:22,148 INFO L168 Benchmark]: Boogie Preprocessor took 23.75 ms. Allocated memory is still 50.3 MB. Free memory was 35.4 MB in the beginning and 34.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:23:22,149 INFO L168 Benchmark]: RCFGBuilder took 288.39 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 24.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:23:22,150 INFO L168 Benchmark]: TraceAbstraction took 1079.79 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 33.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:23:22,150 INFO L168 Benchmark]: Witness Printer took 55.52 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 31.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:23:22,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 24.9 MB in the beginning and 24.8 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.10 ms. Allocated memory is still 41.9 MB. Free memory was 27.6 MB in the beginning and 18.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.95 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 35.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.75 ms. Allocated memory is still 50.3 MB. Free memory was 35.4 MB in the beginning and 34.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 288.39 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 24.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1079.79 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 33.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 55.52 ms. Allocated memory is still 50.3 MB. Free memory was 33.4 MB in the beginning and 31.2 MB in the end (delta: 2.2 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: 12]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 8 SDslu, 23 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 597 SizeOfPredicates, 1 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...