./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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/floats-cbmc-regression/float2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/floats-cbmc-regression/float2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 069e404bf7b01a351383c4004538ba52022db96a ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:57:15,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:15,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:15,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:15,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:15,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:15,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:15,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:15,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:15,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:15,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:15,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:15,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:15,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:15,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:15,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:15,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:15,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:15,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:15,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:15,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:15,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:15,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:15,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:15,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:15,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:15,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:15,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:15,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:15,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:15,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:15,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:15,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:15,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:15,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:15,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:15,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:15,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:15,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:15,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:15,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:15,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:57:15,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:15,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:15,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:15,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:15,682 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:15,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:15,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:15,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:57:15,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:15,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:15,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:15,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:15,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:15,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:15,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:15,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:15,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:15,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:15,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:15,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:15,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:15,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:15,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:15,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:15,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:15,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:57:15,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:57:15,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:15,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:15,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-10-24 21:57:16,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:16,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:16,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:16,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:16,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:16,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-10-24 21:57:16,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16842ec64/75876afb0f294ad0b84e8fd4eee259be/FLAGc52ad46f0 [2020-10-24 21:57:16,942 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:16,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-10-24 21:57:16,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16842ec64/75876afb0f294ad0b84e8fd4eee259be/FLAGc52ad46f0 [2020-10-24 21:57:17,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16842ec64/75876afb0f294ad0b84e8fd4eee259be [2020-10-24 21:57:17,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:17,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:17,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:17,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:17,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:17,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c8449e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17, skipping insertion in model container [2020-10-24 21:57:17,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:17,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:17,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:17,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:17,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:17,554 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:17,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17 WrapperNode [2020-10-24 21:57:17,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:17,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:17,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:17,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:17,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:17,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:17,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:17,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:17,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (1/1) ... [2020-10-24 21:57:17,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:17,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:17,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:17,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:17,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (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 [2020-10-24 21:57:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:57:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:18,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:18,190 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:57:18,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:18 BoogieIcfgContainer [2020-10-24 21:57:18,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:18,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:18,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:18,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:18,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:17" (1/3) ... [2020-10-24 21:57:18,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31988f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:18, skipping insertion in model container [2020-10-24 21:57:18,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:17" (2/3) ... [2020-10-24 21:57:18,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31988f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:18, skipping insertion in model container [2020-10-24 21:57:18,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:18" (3/3) ... [2020-10-24 21:57:18,200 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-10-24 21:57:18,213 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:18,218 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-24 21:57:18,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-24 21:57:18,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:18,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:18,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:18,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:18,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:18,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:18,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:18,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-24 21:57:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 21:57:18,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:18,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 21:57:18,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:18,297 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 21:57:18,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:57:18,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564755883] [2020-10-24 21:57:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:57:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:18,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:18,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:18,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:57:18,503 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:57:18,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:57:18,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:18 BoogieIcfgContainer [2020-10-24 21:57:18,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:57:18,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:57:18,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:57:18,540 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:57:18,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:18" (3/4) ... [2020-10-24 21:57:18,546 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:57:18,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:57:18,551 INFO L168 Benchmark]: Toolchain (without parser) took 1251.01 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.9 MB in the beginning and 32.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:18,554 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:18,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.52 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 25.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:18,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 24.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:18,561 INFO L168 Benchmark]: Boogie Preprocessor took 24.69 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 23.2 MB in the end (delta: 910.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:18,562 INFO L168 Benchmark]: RCFGBuilder took 565.92 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.5 MB in the end (delta: -303.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:18,564 INFO L168 Benchmark]: TraceAbstraction took 344.35 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 32.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:18,565 INFO L168 Benchmark]: Witness Printer took 7.04 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 32.0 MB in the end (delta: 478.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:18,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.52 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 25.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 24.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.69 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 23.2 MB in the end (delta: 910.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 565.92 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.5 MB in the end (delta: -303.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 344.35 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 32.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 7.04 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 32.0 MB in the end (delta: 478.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L3] __assert_fail("0", "float2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:57:21,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:21,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:21,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:21,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:21,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:21,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:21,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:21,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:21,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:21,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:21,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:21,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:21,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:21,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:21,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:21,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:21,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:21,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:21,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:21,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:21,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:21,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:21,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:21,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:21,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:21,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:21,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:21,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:21,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:21,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:21,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:21,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:21,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:21,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:21,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:21,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:21,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:21,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:21,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:21,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:21,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:57:21,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:21,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:21,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:21,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:21,465 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:21,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:21,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:21,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:21,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:21,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:21,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:21,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:21,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:57:21,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:57:21,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:21,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:21,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:21,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:21,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:21,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:21,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:21,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:21,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:21,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:21,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:21,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:21,473 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:57:21,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:57:21,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:21,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:21,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:57:21,474 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-10-24 21:57:21,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:22,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:22,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:22,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:22,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:22,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-10-24 21:57:22,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085e25ed5/b10aac3e60684effa5545ccc27a6362e/FLAG5d4b5e7ca [2020-10-24 21:57:22,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:22,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-10-24 21:57:22,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085e25ed5/b10aac3e60684effa5545ccc27a6362e/FLAG5d4b5e7ca [2020-10-24 21:57:23,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085e25ed5/b10aac3e60684effa5545ccc27a6362e [2020-10-24 21:57:23,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:23,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:23,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:23,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:23,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:23,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b3d34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23, skipping insertion in model container [2020-10-24 21:57:23,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:23,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:23,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:23,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:23,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:23,350 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:23,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23 WrapperNode [2020-10-24 21:57:23,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:23,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:23,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:23,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:23,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:23,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:23,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:23,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:23,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (1/1) ... [2020-10-24 21:57:23,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:23,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:23,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:23,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:23,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (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 [2020-10-24 21:57:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:23,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:57:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:23,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:23,898 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:57:23,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:23 BoogieIcfgContainer [2020-10-24 21:57:23,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:23,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:23,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:23,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:23,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:23" (1/3) ... [2020-10-24 21:57:23,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe64f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:23, skipping insertion in model container [2020-10-24 21:57:23,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:23" (2/3) ... [2020-10-24 21:57:23,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe64f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:23, skipping insertion in model container [2020-10-24 21:57:23,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:23" (3/3) ... [2020-10-24 21:57:23,915 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-10-24 21:57:23,942 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:23,955 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-24 21:57:23,977 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-24 21:57:24,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:24,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:24,008 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:24,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:24,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:24,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:24,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:24,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-24 21:57:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 21:57:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:24,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 21:57:24,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:24,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 21:57:24,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:24,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225012945] [2020-10-24 21:57:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 21:57:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:24,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 21:57:24,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:24,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:24,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225012945] [2020-10-24 21:57:24,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:24,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 21:57:24,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494457345] [2020-10-24 21:57:24,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 21:57:24,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 21:57:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:24,675 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-24 21:57:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:24,846 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-24 21:57:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 21:57:24,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-24 21:57:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:24,860 INFO L225 Difference]: With dead ends: 39 [2020-10-24 21:57:24,860 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 21:57:24,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 21:57:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 21:57:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 21:57:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 21:57:24,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2020-10-24 21:57:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:24,911 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 21:57:24,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 21:57:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 21:57:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:57:24,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:24,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:57:25,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:57:25,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:25,131 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-10-24 21:57:25,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:25,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700250031] [2020-10-24 21:57:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 21:57:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:25,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 21:57:25,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:25,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:25,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700250031] [2020-10-24 21:57:25,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:25,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 21:57:25,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467843084] [2020-10-24 21:57:25,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 21:57:25,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:25,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 21:57:25,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:25,214 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2020-10-24 21:57:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:25,315 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-10-24 21:57:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 21:57:25,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-24 21:57:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:25,317 INFO L225 Difference]: With dead ends: 15 [2020-10-24 21:57:25,317 INFO L226 Difference]: Without dead ends: 13 [2020-10-24 21:57:25,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-24 21:57:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-24 21:57:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-24 21:57:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-10-24 21:57:25,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2020-10-24 21:57:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:25,326 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-10-24 21:57:25,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 21:57:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-10-24 21:57:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 21:57:25,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:25,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:57:25,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:57:25,541 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-10-24 21:57:25,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:25,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781539102] [2020-10-24 21:57:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 21:57:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:25,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 21:57:25,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:25,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:25,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781539102] [2020-10-24 21:57:25,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:25,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 21:57:25,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123110863] [2020-10-24 21:57:25,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 21:57:25,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:25,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 21:57:25,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:25,638 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-10-24 21:57:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:25,812 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-10-24 21:57:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 21:57:25,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-24 21:57:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:25,814 INFO L225 Difference]: With dead ends: 13 [2020-10-24 21:57:25,814 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 21:57:25,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 21:57:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 21:57:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 21:57:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-10-24 21:57:25,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-10-24 21:57:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:25,818 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-10-24 21:57:25,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 21:57:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-10-24 21:57:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 21:57:25,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:25,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:57:26,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 21:57:26,029 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 179821258, now seen corresponding path program 1 times [2020-10-24 21:57:26,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:26,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224540363] [2020-10-24 21:57:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 21:57:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:26,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 21:57:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:26,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:26,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224540363] [2020-10-24 21:57:26,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:26,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 21:57:26,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002450213] [2020-10-24 21:57:26,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 21:57:26,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 21:57:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:26,120 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2020-10-24 21:57:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:26,245 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-10-24 21:57:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 21:57:26,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-24 21:57:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:26,246 INFO L225 Difference]: With dead ends: 11 [2020-10-24 21:57:26,247 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 21:57:26,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 21:57:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 21:57:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 21:57:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 21:57:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 21:57:26,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-24 21:57:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:26,249 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 21:57:26,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 21:57:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 21:57:26,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 21:57:26,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 21:57:26,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 21:57:26,458 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 21:57:26,458 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,458 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-24 21:57:26,459 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,459 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-24 21:57:26,459 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-10-24 21:57:26,459 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 21:57:26,459 INFO L274 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-10-24 21:57:26,465 INFO L274 CegarLoopResult]: For program point L5(lines 5 24) no Hoare annotation was computed. [2020-10-24 21:57:26,465 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,466 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,466 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,466 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,467 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 21:57:26,467 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,467 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,467 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 21:57:26,467 INFO L274 CegarLoopResult]: For program point L3-6(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 21:57:26,468 INFO L274 CegarLoopResult]: For program point L3-7(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 21:57:26,469 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-24 21:57:26,469 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-24 21:57:26,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:26 BoogieIcfgContainer [2020-10-24 21:57:26,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:57:26,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:57:26,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:57:26,477 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:57:26,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:23" (3/4) ... [2020-10-24 21:57:26,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 21:57:26,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 21:57:26,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 21:57:26,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 21:57:26,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:57:26,562 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:57:26,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:57:26,567 INFO L168 Benchmark]: Toolchain (without parser) took 3496.32 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 43.0 MB in the end (delta: -16.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:26,568 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:26,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.17 ms. Allocated memory is still 52.4 MB. Free memory was 25.8 MB in the beginning and 29.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:26,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:26,576 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 52.4 MB. Free memory was 27.9 MB in the beginning and 26.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:26,577 INFO L168 Benchmark]: RCFGBuilder took 472.58 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 30.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:26,577 INFO L168 Benchmark]: TraceAbstraction took 2571.38 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:26,578 INFO L168 Benchmark]: Witness Printer took 87.35 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:26,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.17 ms. Allocated memory is still 52.4 MB. Free memory was 25.8 MB in the beginning and 29.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.17 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 52.4 MB. Free memory was 27.9 MB in the beginning and 26.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 472.58 ms. Allocated memory is still 52.4 MB. Free memory was 26.7 MB in the beginning and 30.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2571.38 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 87.35 ms. Allocated memory is still 62.9 MB. Free memory was 45.4 MB in the beginning and 43.0 MB in the end (delta: 2.5 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...