./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 01:01:17,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:01:17,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:01:17,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:01:17,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:01:17,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:01:17,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:01:17,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:01:17,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:01:17,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:01:17,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:01:17,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:01:17,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:01:17,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:01:17,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:01:17,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:01:17,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:01:17,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:01:17,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:01:17,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:01:17,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:01:17,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:01:17,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:01:17,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:01:17,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:01:17,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:01:17,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:01:17,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:01:17,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:01:17,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:01:17,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:01:17,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:01:17,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:01:17,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:01:17,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:01:17,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:01:17,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:01:17,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:01:17,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:01:17,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:01:17,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:01:17,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:01:17,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:01:17,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:01:17,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:01:17,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:01:17,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:01:17,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:01:17,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:01:17,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:01:17,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:01:17,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:01:17,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:01:17,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:01:17,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:01:17,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:01:17,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:01:17,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:01:17,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:01:17,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:01:17,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:01:17,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:01:17,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:01:17,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:01:17,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:01:17,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:01:17,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 [2020-10-20 01:01:17,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:01:17,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:01:17,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:01:17,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:01:17,929 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:01:17,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1.i [2020-10-20 01:01:18,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf6a7e0/4fbb301cc53a49ab907482999c360894/FLAG2da3c0d9b [2020-10-20 01:01:18,418 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:01:18,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1.i [2020-10-20 01:01:18,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf6a7e0/4fbb301cc53a49ab907482999c360894/FLAG2da3c0d9b [2020-10-20 01:01:18,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddf6a7e0/4fbb301cc53a49ab907482999c360894 [2020-10-20 01:01:18,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:01:18,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:01:18,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:01:18,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:01:18,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:01:18,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:01:18" (1/1) ... [2020-10-20 01:01:18,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e43e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:18, skipping insertion in model container [2020-10-20 01:01:18,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:01:18" (1/1) ... [2020-10-20 01:01:18,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:01:18,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:01:19,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:01:19,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:01:19,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:01:19,230 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:01:19,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19 WrapperNode [2020-10-20 01:01:19,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:01:19,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:01:19,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:01:19,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:01:19,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:01:19,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:01:19,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:01:19,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:01:19,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (1/1) ... [2020-10-20 01:01:19,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:01:19,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:01:19,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:01:19,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:01:19,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (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 [2020-10-20 01:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:01:19,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:01:19,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:01:19,594 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 01:01:19,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:01:19 BoogieIcfgContainer [2020-10-20 01:01:19,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:01:19,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:01:19,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:01:19,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:01:19,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:01:18" (1/3) ... [2020-10-20 01:01:19,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5393eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:01:19, skipping insertion in model container [2020-10-20 01:01:19,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:01:19" (2/3) ... [2020-10-20 01:01:19,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5393eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:01:19, skipping insertion in model container [2020-10-20 01:01:19,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:01:19" (3/3) ... [2020-10-20 01:01:19,608 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-10-20 01:01:19,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:01:19,632 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:01:19,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:01:19,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:01:19,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:01:19,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:01:19,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:01:19,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:01:19,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:01:19,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:01:19,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:01:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 01:01:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 01:01:19,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:01:19,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:01:19,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:01:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:01:19,716 INFO L82 PathProgramCache]: Analyzing trace with hash 211949486, now seen corresponding path program 1 times [2020-10-20 01:01:19,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:01:19,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052664161] [2020-10-20 01:01:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:01:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:01:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:01:19,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052664161] [2020-10-20 01:01:19,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:01:19,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:01:19,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928246643] [2020-10-20 01:01:19,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:01:19,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:01:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:01:19,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:01:19,953 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-10-20 01:01:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:01:19,986 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-10-20 01:01:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:01:19,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 01:01:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:01:19,999 INFO L225 Difference]: With dead ends: 27 [2020-10-20 01:01:19,999 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 01:01:20,003 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 [2020-10-20 01:01:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 01:01:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-10-20 01:01:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 01:01:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 01:01:20,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-20 01:01:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:01:20,036 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 01:01:20,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:01:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 01:01:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:01:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:01:20,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:01:20,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:01:20,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:01:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:01:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1435847344, now seen corresponding path program 1 times [2020-10-20 01:01:20,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:01:20,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120479425] [2020-10-20 01:01:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:01:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:01:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:01:20,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120479425] [2020-10-20 01:01:20,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665084665] [2020-10-20 01:01:20,084 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 [2020-10-20 01:01:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:01:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 01:01:20,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:01:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:01:20,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:01:20,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 01:01:20,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759894549] [2020-10-20 01:01:20,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:01:20,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:01:20,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:01:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:01:20,212 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-10-20 01:01:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:01:20,243 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 01:01:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:01:20,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 01:01:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:01:20,245 INFO L225 Difference]: With dead ends: 20 [2020-10-20 01:01:20,245 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 01:01:20,246 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 [2020-10-20 01:01:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 01:01:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-20 01:01:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 01:01:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 01:01:20,250 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-20 01:01:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:01:20,250 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 01:01:20,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:01:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 01:01:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:01:20,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:01:20,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:01:20,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:01:20,463 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:01:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:01:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash 780649778, now seen corresponding path program 2 times [2020-10-20 01:01:20,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:01:20,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851544260] [2020-10-20 01:01:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:01:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:01:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:01:20,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851544260] [2020-10-20 01:01:20,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:01:20,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:01:20,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3950103] [2020-10-20 01:01:20,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:01:20,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:01:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:01:20,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:01:20,558 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-10-20 01:01:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:01:20,590 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-20 01:01:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:01:20,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-20 01:01:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:01:20,591 INFO L225 Difference]: With dead ends: 13 [2020-10-20 01:01:20,591 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:01:20,592 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 [2020-10-20 01:01:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:01:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:01:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:01:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:01:20,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-20 01:01:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:01:20,593 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:01:20,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:01:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:01:20,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:01:20,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:01:20,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:01:20,641 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:01:20,642 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 01:01:20,642 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:01:20,642 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:01:20,642 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:01:20,643 INFO L277 CegarLoopResult]: At program point L28(lines 24 29) the Hoare annotation is: true [2020-10-20 01:01:20,643 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-10-20 01:01:20,643 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:01:20,643 INFO L270 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2020-10-20 01:01:20,643 INFO L274 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-10-20 01:01:20,643 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:01:20,644 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-20 01:01:20,644 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 01:01:20,645 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 01:01:20,645 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 01:01:20,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:01:20 BoogieIcfgContainer [2020-10-20 01:01:20,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:01:20,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:01:20,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:01:20,677 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:01:20,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:01:19" (3/4) ... [2020-10-20 01:01:20,689 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:01:20,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 01:01:20,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:01:20,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:01:20,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:01:20,826 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:01:20,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:01:20,829 INFO L168 Benchmark]: Toolchain (without parser) took 2007.98 ms. Allocated memory was 40.4 MB in the beginning and 45.6 MB in the end (delta: 5.2 MB). Free memory was 19.2 MB in the beginning and 27.9 MB in the end (delta: -8.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:01:20,830 INFO L168 Benchmark]: CDTParser took 1.52 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 6.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.06 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 18.2 MB in the beginning and 20.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 40.9 MB. Free memory was 20.4 MB in the beginning and 18.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,832 INFO L168 Benchmark]: Boogie Preprocessor took 37.49 ms. Allocated memory is still 40.9 MB. Free memory was 18.9 MB in the beginning and 17.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,833 INFO L168 Benchmark]: RCFGBuilder took 280.94 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 17.7 MB in the beginning and 22.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,834 INFO L168 Benchmark]: TraceAbstraction took 1077.62 ms. Allocated memory was 42.5 MB in the beginning and 45.6 MB in the end (delta: 3.1 MB). Free memory was 21.9 MB in the beginning and 30.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,835 INFO L168 Benchmark]: Witness Printer took 149.83 ms. Allocated memory is still 45.6 MB. Free memory was 30.7 MB in the beginning and 27.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:01:20,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 6.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 405.06 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 18.2 MB in the beginning and 20.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 40.9 MB. Free memory was 20.4 MB in the beginning and 18.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.49 ms. Allocated memory is still 40.9 MB. Free memory was 18.9 MB in the beginning and 17.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 280.94 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 17.7 MB in the beginning and 22.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1077.62 ms. Allocated memory was 42.5 MB in the beginning and 45.6 MB in the end (delta: 3.1 MB). Free memory was 21.9 MB in the beginning and 30.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. * Witness Printer took 149.83 ms. Allocated memory is still 45.6 MB. Free memory was 30.7 MB in the beginning and 27.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 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, 0.0s 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...