./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=/tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer --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=/tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer --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 [2020-11-30 00:14:32,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:32,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:32,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:32,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:32,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:32,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:32,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:32,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:32,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:32,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:32,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:32,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:32,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:32,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:32,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:32,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:32,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:32,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:32,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:32,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:32,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:32,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:32,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:32,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:32,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:32,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:32,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:32,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:32,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:32,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:32,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:32,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:32,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:32,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:32,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:32,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:32,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:32,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:32,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:32,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:32,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:32,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:32,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:32,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:32,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:32,670 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:32,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:32,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:32,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:32,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:32,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:32,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:32,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:32,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:32,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:32,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:32,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:32,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:32,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:32,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:32,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:32,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:32,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:32,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:32,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:32,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:32,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:32,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:32,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:32,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:32,682 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:/tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-11-30 00:14:32,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:33,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:33,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:33,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:33,015 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:33,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 00:14:33,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/75f06cd08/da6e955d49304d65874fec9378a23716/FLAG3eb5d84d8 [2020-11-30 00:14:33,615 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:33,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 00:14:33,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/75f06cd08/da6e955d49304d65874fec9378a23716/FLAG3eb5d84d8 [2020-11-30 00:14:34,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/75f06cd08/da6e955d49304d65874fec9378a23716 [2020-11-30 00:14:34,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:34,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:34,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:34,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:34,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:34,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d0b3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34, skipping insertion in model container [2020-11-30 00:14:34,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:34,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:34,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:34,248 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:34,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:34,297 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:34,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34 WrapperNode [2020-11-30 00:14:34,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:34,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:34,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:34,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:34,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:34,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:34,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:34,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:34,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:34,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:34,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:34,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:34,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:34,847 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:34,848 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:14:34,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:34 BoogieIcfgContainer [2020-11-30 00:14:34,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:34,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:34,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:34,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:34" (1/3) ... [2020-11-30 00:14:34,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155643af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:34, skipping insertion in model container [2020-11-30 00:14:34,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34" (2/3) ... [2020-11-30 00:14:34,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155643af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:34, skipping insertion in model container [2020-11-30 00:14:34,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:34" (3/3) ... [2020-11-30 00:14:34,863 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-11-30 00:14:34,882 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:34,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 00:14:34,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:14:34,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:34,930 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:34,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:34,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:34,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:34,930 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:34,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:34,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-30 00:14:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:14:34,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:34,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:14:34,949 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-30 00:14:34,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:34,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104761640] [2020-11-30 00:14:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:35,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:35,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:35,134 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:35,135 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:35,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:35,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:35 BoogieIcfgContainer [2020-11-30 00:14:35,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:35,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:35,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:35,170 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:35,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:34" (3/4) ... [2020-11-30 00:14:35,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:14:35,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:35,179 INFO L168 Benchmark]: Toolchain (without parser) took 1170.73 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 59.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:35,180 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:35,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.30 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 85.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:35,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:35,186 INFO L168 Benchmark]: Boogie Preprocessor took 22.87 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 83.1 MB in the end (delta: 956.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:35,188 INFO L168 Benchmark]: RCFGBuilder took 492.27 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 71.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:35,189 INFO L168 Benchmark]: TraceAbstraction took 313.06 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 60.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:35,191 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 59.5 MB in the end (delta: 237.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:35,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.30 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 85.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 84.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.87 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 83.1 MB in the end (delta: 956.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 492.27 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 71.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 313.06 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 60.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.18 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 59.5 MB in the end (delta: 237.0 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 [2020-11-30 00:14:38,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:38,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:38,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:38,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:38,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:38,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:38,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:38,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:38,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:38,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:38,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:38,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:38,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:38,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:38,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:38,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:38,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:38,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:38,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:38,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:38,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:38,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:38,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:38,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:38,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:38,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:38,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:38,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:38,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:38,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:38,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:38,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:38,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:38,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:38,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:38,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:38,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:38,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:38,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:38,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:38,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:14:38,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:38,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:38,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:38,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:38,209 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:38,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:38,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:38,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:38,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:38,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:38,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:38,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:38,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:14:38,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:14:38,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:38,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:38,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:38,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:38,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:38,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:38,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:38,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:38,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:38,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:38,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:38,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:38,216 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:14:38,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:14:38,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:38,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:38,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:14:38,217 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:/tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-11-30 00:14:38,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:38,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:38,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:38,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:38,730 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:38,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 00:14:38,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/c547acd0d/e0ad6c7c7609409d85d0c49ebb8cc5ff/FLAGa1522a869 [2020-11-30 00:14:39,466 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:39,466 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 00:14:39,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/c547acd0d/e0ad6c7c7609409d85d0c49ebb8cc5ff/FLAGa1522a869 [2020-11-30 00:14:39,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/data/c547acd0d/e0ad6c7c7609409d85d0c49ebb8cc5ff [2020-11-30 00:14:39,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:39,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:39,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:39,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:39,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:39,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89589b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39, skipping insertion in model container [2020-11-30 00:14:39,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:39,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:40,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:40,075 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:40,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:40,128 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:40,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40 WrapperNode [2020-11-30 00:14:40,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:40,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:40,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:40,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:40,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:40,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:40,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:40,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:40,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... [2020-11-30 00:14:40,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:40,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:40,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:40,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:40,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:14:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:40,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:40,985 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:14:40,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40 BoogieIcfgContainer [2020-11-30 00:14:40,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:40,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:40,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:40,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:40,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:39" (1/3) ... [2020-11-30 00:14:40,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b23773d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:40, skipping insertion in model container [2020-11-30 00:14:40,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:40" (2/3) ... [2020-11-30 00:14:40,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b23773d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:40, skipping insertion in model container [2020-11-30 00:14:40,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40" (3/3) ... [2020-11-30 00:14:40,998 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-11-30 00:14:41,007 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:41,012 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 00:14:41,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:14:41,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:41,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:41,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:41,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:41,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:41,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:41,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:41,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-30 00:14:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:14:41,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:41,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:14:41,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:41,088 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-30 00:14:41,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:41,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036893490] [2020-11-30 00:14:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:41,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:14:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036893490] [2020-11-30 00:14:41,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:41,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:14:41,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148472468] [2020-11-30 00:14:41,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:41,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:41,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:41,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:41,445 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-11-30 00:14:41,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:41,595 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-11-30 00:14:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:41,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 00:14:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:41,606 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:14:41,606 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:14:41,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:14:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:14:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:14:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-30 00:14:41,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2020-11-30 00:14:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:41,644 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-30 00:14:41,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-30 00:14:41,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:14:41,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:41,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:14:41,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:14:41,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:41,859 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-11-30 00:14:41,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:41,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591341027] [2020-11-30 00:14:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:41,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:14:41,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591341027] [2020-11-30 00:14:41,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:41,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:14:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421917584] [2020-11-30 00:14:41,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:41,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:41,960 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2020-11-30 00:14:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:42,075 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-11-30 00:14:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:42,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 00:14:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:42,077 INFO L225 Difference]: With dead ends: 15 [2020-11-30 00:14:42,077 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 00:14:42,078 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 [2020-11-30 00:14:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 00:14:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 00:14:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 00:14:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-11-30 00:14:42,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2020-11-30 00:14:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:42,082 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-11-30 00:14:42,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-11-30 00:14:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:14:42,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:42,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:42,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:14:42,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:42,285 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-11-30 00:14:42,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:42,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049639769] [2020-11-30 00:14:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:42,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:14:42,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:42,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:42,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049639769] [2020-11-30 00:14:42,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:42,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:14:42,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600536530] [2020-11-30 00:14:42,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:42,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:42,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:42,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:42,461 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-11-30 00:14:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:42,655 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-11-30 00:14:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:42,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:14:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:42,657 INFO L225 Difference]: With dead ends: 13 [2020-11-30 00:14:42,657 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 00:14:42,657 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 [2020-11-30 00:14:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 00:14:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 00:14:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 00:14:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-30 00:14:42,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-11-30 00:14:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:42,660 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-30 00:14:42,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-30 00:14:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:14:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:42,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:42,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:14:42,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:42,873 INFO L82 PathProgramCache]: Analyzing trace with hash 179821258, now seen corresponding path program 1 times [2020-11-30 00:14:42,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:42,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76491058] [2020-11-30 00:14:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/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 [2020-11-30 00:14:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:42,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:14:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:42,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:43,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76491058] [2020-11-30 00:14:43,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:43,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:14:43,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700444056] [2020-11-30 00:14:43,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:43,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:43,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:43,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:43,017 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2020-11-30 00:14:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:43,134 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-11-30 00:14:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:43,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 00:14:43,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:43,136 INFO L225 Difference]: With dead ends: 11 [2020-11-30 00:14:43,137 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:14:43,137 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 [2020-11-30 00:14:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:14:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:14:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:14:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:14:43,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-30 00:14:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:43,138 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:14:43,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:14:43,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:14:43,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:14:43,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:14:43,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:14:43,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,352 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 00:14:43,352 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L5(lines 5 24) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,353 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L3-6(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:14:43,354 INFO L274 CegarLoopResult]: For program point L3-7(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,355 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,355 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:14:43,355 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:14:43,355 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:14:43,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:43 BoogieIcfgContainer [2020-11-30 00:14:43,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:43,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:43,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:43,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:43,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40" (3/4) ... [2020-11-30 00:14:43,383 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:14:43,395 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:14:43,396 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:14:43,396 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:14:43,396 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:14:43,453 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b56a5129-1825-4fd5-82c1-89568782e590/bin/uautomizer/witness.graphml [2020-11-30 00:14:43,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:43,464 INFO L168 Benchmark]: Toolchain (without parser) took 3624.35 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.8 MB in the beginning and 39.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:43,467 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.1 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:43,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.44 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 22.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:43,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.86 ms. Allocated memory is still 54.5 MB. Free memory was 22.8 MB in the beginning and 37.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:43,475 INFO L168 Benchmark]: Boogie Preprocessor took 61.63 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:43,476 INFO L168 Benchmark]: RCFGBuilder took 726.59 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 24.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:43,476 INFO L168 Benchmark]: TraceAbstraction took 2386.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.2 MB in the beginning and 42.2 MB in the end (delta: -18.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:43,477 INFO L168 Benchmark]: Witness Printer took 83.98 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:43,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.1 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.44 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 22.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.86 ms. Allocated memory is still 54.5 MB. Free memory was 22.8 MB in the beginning and 37.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.63 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 726.59 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 24.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2386.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.2 MB in the beginning and 42.2 MB in the end (delta: -18.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 83.98 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 39.8 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: 2.2s, 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, 0.5s 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, 0.4s 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...