./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float1.c --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/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 ................................................................................................................................................................................................................................ 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_1.3.100.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/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 .............................................................................................................................................................................................................................................................................. 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 00:15:38,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:38,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:38,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:38,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:38,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:38,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:38,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:38,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:38,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:38,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:38,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:38,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:38,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:38,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:38,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:38,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:38,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:38,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:38,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:38,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:38,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:38,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:38,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:38,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:38,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:38,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:38,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:38,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:38,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:38,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:38,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:38,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:38,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:38,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:38,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:38,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:38,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:38,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:38,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:38,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:38,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:15:38,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:38,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:38,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:38,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:38,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:38,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:38,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:38,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:15:38,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:38,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:38,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:38,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:38,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:38,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:38,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:38,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:38,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:38,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:38,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:38,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:38,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:38,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:38,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:38,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:38,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:38,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:15:38,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:15:38,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:38,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:38,627 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 -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-10-20 00:15:38,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:38,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:38,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:38,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:38,863 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:38,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-10-20 00:15:38,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18861de7c/41b07ba262ca4198af5e352e14679d20/FLAG41efc325f [2020-10-20 00:15:39,321 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:39,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-10-20 00:15:39,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18861de7c/41b07ba262ca4198af5e352e14679d20/FLAG41efc325f [2020-10-20 00:15:39,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18861de7c/41b07ba262ca4198af5e352e14679d20 [2020-10-20 00:15:39,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:39,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:39,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:39,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:39,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:39,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:39" (1/1) ... [2020-10-20 00:15:39,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ab4498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:39, skipping insertion in model container [2020-10-20 00:15:39,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:39" (1/1) ... [2020-10-20 00:15:39,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:39,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:40,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:40,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:40,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:40,056 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:40,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40 WrapperNode [2020-10-20 00:15:40,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:40,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:40,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:40,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:40,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:40,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:40,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:40,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:40,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (1/1) ... [2020-10-20 00:15:40,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:40,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:40,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:40,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:40,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (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 00:15:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:15:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:40,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:40,450 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:15:40,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:40 BoogieIcfgContainer [2020-10-20 00:15:40,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:40,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:40,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:40,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:40,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:39" (1/3) ... [2020-10-20 00:15:40,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e8cf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:40, skipping insertion in model container [2020-10-20 00:15:40,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:40" (2/3) ... [2020-10-20 00:15:40,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e8cf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:40, skipping insertion in model container [2020-10-20 00:15:40,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:40" (3/3) ... [2020-10-20 00:15:40,464 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-10-20 00:15:40,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:40,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:15:40,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:15:40,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:40,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:40,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:40,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:40,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:40,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:40,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:40,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:15:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:15:40,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:40,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:15:40,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:40,591 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-20 00:15:40,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:15:40,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966881672] [2020-10-20 00:15:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:15:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:40,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:40,716 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:40,736 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:15:40,737 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:15:40,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:15:40,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:40 BoogieIcfgContainer [2020-10-20 00:15:40,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:40,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:40,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:40,760 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:40,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:40" (3/4) ... [2020-10-20 00:15:40,775 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:15:40,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:40,781 INFO L168 Benchmark]: Toolchain (without parser) took 1078.91 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 9.5 MB in the beginning and 14.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,783 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 35.1 MB. Free memory was 14.2 MB in the beginning and 14.1 MB in the end (delta: 49.5 kB). Peak memory consumption was 49.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.91 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.7 MB in the beginning and 28.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 44.6 MB. Free memory was 28.1 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,787 INFO L168 Benchmark]: Boogie Preprocessor took 33.56 ms. Allocated memory is still 44.6 MB. Free memory was 26.4 MB in the beginning and 25.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,788 INFO L168 Benchmark]: RCFGBuilder took 320.71 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 25.3 MB in the beginning and 28.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,789 INFO L168 Benchmark]: TraceAbstraction took 305.60 ms. Allocated memory is still 46.7 MB. Free memory was 27.7 MB in the beginning and 14.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,790 INFO L168 Benchmark]: Witness Printer took 15.05 ms. Allocated memory is still 46.7 MB. Free memory was 14.4 MB in the beginning and 14.1 MB in the end (delta: 246.0 kB). Peak memory consumption was 246.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:40,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 35.1 MB. Free memory was 14.2 MB in the beginning and 14.1 MB in the end (delta: 49.5 kB). Peak memory consumption was 49.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 351.91 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.7 MB in the beginning and 28.2 MB in the end (delta: -19.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 44.6 MB. Free memory was 28.1 MB in the beginning and 26.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.56 ms. Allocated memory is still 44.6 MB. Free memory was 26.4 MB in the beginning and 25.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 320.71 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 25.3 MB in the beginning and 28.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 305.60 ms. Allocated memory is still 46.7 MB. Free memory was 27.7 MB in the beginning and 14.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 14.3 GB. * Witness Printer took 15.05 ms. Allocated memory is still 46.7 MB. Free memory was 14.4 MB in the beginning and 14.1 MB in the end (delta: 246.0 kB). Peak memory consumption was 246.0 kB. Max. memory is 14.3 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 to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L3] __assert_fail("0", "float1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 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=14occurred 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 0.1.25-9a8b2e8 [2020-10-20 00:15:42,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:42,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:43,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:43,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:43,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:43,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:43,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:43,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:43,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:43,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:43,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:43,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:43,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:43,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:43,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:43,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:43,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:43,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:43,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:43,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:43,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:43,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:43,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:43,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:43,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:43,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:43,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:43,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:43,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:43,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:43,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:43,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:43,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:43,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:43,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:43,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:43,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:43,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:43,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:43,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:43,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:15:43,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:43,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:43,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:43,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:43,068 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:43,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:43,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:43,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:43,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:43,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:43,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:43,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:43,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:15:43,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:15:43,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:43,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:43,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:43,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:43,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:43,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:43,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:43,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:43,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:43,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:43,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:43,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:43,074 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:15:43,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:15:43,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:43,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:43,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:15:43,075 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-10-20 00:15:43,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:43,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:43,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:43,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:43,295 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:43,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-10-20 00:15:43,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c5834f6/bbaab77b0e464b38a894cd99c0d556e3/FLAGd5111605d [2020-10-20 00:15:43,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:43,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2020-10-20 00:15:43,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c5834f6/bbaab77b0e464b38a894cd99c0d556e3/FLAGd5111605d [2020-10-20 00:15:44,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c5834f6/bbaab77b0e464b38a894cd99c0d556e3 [2020-10-20 00:15:44,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:44,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:44,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:44,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:44,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:44,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec6b7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44, skipping insertion in model container [2020-10-20 00:15:44,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:44,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:44,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:44,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:44,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:44,707 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:44,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44 WrapperNode [2020-10-20 00:15:44,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:44,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:44,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:44,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:44,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:44,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:44,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:44,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:44,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (1/1) ... [2020-10-20 00:15:44,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:44,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:44,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:44,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:44,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (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 00:15:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:15:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:45,543 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:45,544 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:15:45,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:45 BoogieIcfgContainer [2020-10-20 00:15:45,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:45,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:45,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:45,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:45,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:44" (1/3) ... [2020-10-20 00:15:45,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a74e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:45, skipping insertion in model container [2020-10-20 00:15:45,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:44" (2/3) ... [2020-10-20 00:15:45,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a74e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:45, skipping insertion in model container [2020-10-20 00:15:45,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:45" (3/3) ... [2020-10-20 00:15:45,556 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-10-20 00:15:45,568 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:45,576 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:15:45,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:15:45,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:45,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:45,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:45,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:45,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:45,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:45,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:45,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:15:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:15:45,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:45,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:15:45,639 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-20 00:15:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:45,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358384912] [2020-10-20 00:15:45,658 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 [2020-10-20 00:15:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:15:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:45,870 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 00:15:45,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:46,196 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 00:15:46,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358384912] [2020-10-20 00:15:46,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:46,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:15:46,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353221515] [2020-10-20 00:15:46,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:15:46,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:15:46,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:15:46,227 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-10-20 00:15:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:46,536 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-20 00:15:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:46,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-10-20 00:15:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:46,543 INFO L225 Difference]: With dead ends: 19 [2020-10-20 00:15:46,544 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:15:46,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:15:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:15:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:15:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:15:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:15:46,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-20 00:15:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:46,569 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:15:46,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:15:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:15:46,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:15:46,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:15:46,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:15:46,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:15:46,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:15:46,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:15:46,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:15:46,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:15:46,781 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 00:15:46,781 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 00:15:46,781 INFO L274 CegarLoopResult]: For program point L4(lines 4 20) no Hoare annotation was computed. [2020-10-20 00:15:46,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:46 BoogieIcfgContainer [2020-10-20 00:15:46,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:46,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:46,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:46,788 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:46,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:45" (3/4) ... [2020-10-20 00:15:46,794 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:15:46,805 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:15:46,805 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:15:46,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:15:46,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:15:46,849 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:15:46,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:46,852 INFO L168 Benchmark]: Toolchain (without parser) took 2537.56 ms. Allocated memory was 42.5 MB in the beginning and 45.6 MB in the end (delta: 3.1 MB). Free memory was 22.7 MB in the beginning and 16.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,853 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.46 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 23.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 43.0 MB. Free memory was 23.4 MB in the beginning and 21.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,856 INFO L168 Benchmark]: Boogie Preprocessor took 57.95 ms. Allocated memory is still 43.0 MB. Free memory was 21.6 MB in the beginning and 20.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,857 INFO L168 Benchmark]: RCFGBuilder took 726.48 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.2 MB in the beginning and 26.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,857 INFO L168 Benchmark]: TraceAbstraction took 1239.33 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 26.2 MB in the beginning and 19.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,858 INFO L168 Benchmark]: Witness Printer took 62.40 ms. Allocated memory is still 45.6 MB. Free memory was 19.0 MB in the beginning and 16.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:46,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 387.46 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 21.8 MB in the beginning and 23.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.04 ms. Allocated memory is still 43.0 MB. Free memory was 23.4 MB in the beginning and 21.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 57.95 ms. Allocated memory is still 43.0 MB. Free memory was 21.6 MB in the beginning and 20.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 726.48 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 20.2 MB in the beginning and 26.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1239.33 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 26.2 MB in the beginning and 19.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Witness Printer took 62.40 ms. Allocated memory is still 45.6 MB. Free memory was 19.0 MB in the beginning and 16.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 1 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...