./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:38:12,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:38:12,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:38:12,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:38:12,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:38:12,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:38:12,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:38:12,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:38:12,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:38:12,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:38:12,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:38:12,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:38:12,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:38:12,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:38:12,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:38:12,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:38:12,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:38:12,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:38:12,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:38:12,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:38:12,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:38:12,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:38:12,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:38:12,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:38:12,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:38:12,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:38:12,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:38:12,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:38:12,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:38:12,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:38:12,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:38:12,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:38:12,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:38:12,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:38:12,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:38:12,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:38:12,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:38:12,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:38:12,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:38:12,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:38:12,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:38:12,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:38:12,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:38:12,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:38:12,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:38:12,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:38:12,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:38:12,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:38:12,736 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:38:12,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:38:12,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:38:12,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:38:12,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:38:12,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:38:12,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:38:12,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:38:12,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:38:12,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:38:12,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:38:12,740 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:38:12,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:38:12,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:38:12,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:38:12,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:38:12,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:12,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:38:12,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:38:12,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:38:12,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:38:12,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:38:12,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:38:12,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:38:12,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:38:12,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:38:12,745 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_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-28 23:38:13,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:38:13,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:38:13,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:38:13,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:38:13,041 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:38:13,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 23:38:13,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/1dfaa8639/6b5f104c04f54392a953d059fd72431c/FLAG586f02e4e [2021-10-28 23:38:13,561 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:38:13,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 23:38:13,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/1dfaa8639/6b5f104c04f54392a953d059fd72431c/FLAG586f02e4e [2021-10-28 23:38:13,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/1dfaa8639/6b5f104c04f54392a953d059fd72431c [2021-10-28 23:38:13,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:38:13,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:38:13,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:13,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:38:13,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:38:13,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:13" (1/1) ... [2021-10-28 23:38:13,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be15ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:13, skipping insertion in model container [2021-10-28 23:38:13,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:13" (1/1) ... [2021-10-28 23:38:13,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:38:13,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:38:14,154 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 23:38:14,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:14,165 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:38:14,179 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 23:38:14,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:14,192 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:38:14,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14 WrapperNode [2021-10-28 23:38:14,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:14,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:14,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:38:14,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:38:14,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:14,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:38:14,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:38:14,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:38:14,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:38:14,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:38:14,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:38:14,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:38:14,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (1/1) ... [2021-10-28 23:38:14,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:14,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:38:14,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:38:14,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:38:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:38:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:38:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:38:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:38:14,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:38:14,498 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:38:14,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:14 BoogieIcfgContainer [2021-10-28 23:38:14,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:38:14,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:38:14,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:38:14,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:38:14,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:38:13" (1/3) ... [2021-10-28 23:38:14,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719c85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:14, skipping insertion in model container [2021-10-28 23:38:14,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:14" (2/3) ... [2021-10-28 23:38:14,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719c85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:14, skipping insertion in model container [2021-10-28 23:38:14,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:14" (3/3) ... [2021-10-28 23:38:14,521 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-28 23:38:14,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:38:14,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:38:14,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:38:14,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:38:14,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:38:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:38:14,636 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:14,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:38:14,637 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:38:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 23:38:14,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:14,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342269462] [2021-10-28 23:38:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:14,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:14,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:14,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342269462] [2021-10-28 23:38:14,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342269462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:14,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:14,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:38:14,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569784083] [2021-10-28 23:38:14,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:38:14,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:38:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:14,818 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:14,832 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:38:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:38:14,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:38:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:14,840 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:38:14,840 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:38:14,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:38:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:38:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:38:14,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:38:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:14,869 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:38:14,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:38:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:38:14,870 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:14,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:38:14,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:38:14,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:38:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 23:38:14,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:14,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789861867] [2021-10-28 23:38:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:14,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:38:14,901 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:38:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:38:14,946 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:38:14,946 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:38:14,948 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:38:14,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:38:14,952 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:38:14,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:38:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:38:14 BoogieIcfgContainer [2021-10-28 23:38:14,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:38:14,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:38:14,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:38:14,973 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:38:14,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:14" (3/4) ... [2021-10-28 23:38:14,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:38:14,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:38:14,978 INFO L168 Benchmark]: Toolchain (without parser) took 1038.84 ms. Allocated memory is still 111.1 MB. Free memory was 78.2 MB in the beginning and 54.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,979 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:38:14,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.16 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 88.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.64 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 86.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,981 INFO L168 Benchmark]: Boogie Preprocessor took 17.99 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,982 INFO L168 Benchmark]: RCFGBuilder took 254.79 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 76.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,983 INFO L168 Benchmark]: TraceAbstraction took 470.28 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 54.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,984 INFO L168 Benchmark]: Witness Printer took 3.81 ms. Allocated memory is still 111.1 MB. Free memory was 54.6 MB in the beginning and 54.1 MB in the end (delta: 543.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.16 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 88.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.64 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 86.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.99 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 254.79 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 76.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 470.28 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 54.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.81 ms. Allocated memory is still 111.1 MB. Free memory was 54.6 MB in the beginning and 54.1 MB in the end (delta: 543.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-10-28 23:38:15,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:38:17,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:38:17,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:38:17,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:38:17,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:38:17,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:38:17,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:38:17,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:38:17,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:38:17,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:38:17,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:38:17,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:38:17,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:38:17,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:38:17,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:38:17,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:38:17,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:38:17,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:38:17,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:38:17,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:38:17,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:38:17,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:38:17,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:38:17,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:38:17,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:38:17,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:38:17,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:38:17,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:38:17,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:38:17,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:38:17,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:38:17,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:38:17,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:38:17,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:38:17,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:38:17,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:38:17,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:38:17,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:38:17,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:38:17,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:38:17,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:38:17,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:38:17,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:38:17,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:38:17,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:38:17,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:38:17,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:38:17,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:38:17,514 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:38:17,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:38:17,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:38:17,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:38:17,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:38:17,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:38:17,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:38:17,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:38:17,517 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:38:17,517 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:38:17,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:38:17,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:38:17,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:38:17,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:38:17,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:38:17,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:38:17,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:38:17,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:17,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:38:17,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:38:17,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:38:17,520 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:38:17,520 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:38:17,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:38:17,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:38:17,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:38:17,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:38:17,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:38:17,522 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_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-28 23:38:17,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:38:17,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:38:17,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:38:17,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:38:17,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:38:17,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 23:38:17,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/2f1b67548/8911798430604d01bc1c1f7e6ade918b/FLAG7c1c27b13 [2021-10-28 23:38:18,459 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:38:18,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 23:38:18,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/2f1b67548/8911798430604d01bc1c1f7e6ade918b/FLAG7c1c27b13 [2021-10-28 23:38:18,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/data/2f1b67548/8911798430604d01bc1c1f7e6ade918b [2021-10-28 23:38:18,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:38:18,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:38:18,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:18,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:38:18,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:38:18,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:18" (1/1) ... [2021-10-28 23:38:18,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecf6ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:18, skipping insertion in model container [2021-10-28 23:38:18,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:38:18" (1/1) ... [2021-10-28 23:38:18,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:38:18,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:38:19,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 23:38:19,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:19,109 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:38:19,152 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 23:38:19,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:38:19,186 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:38:19,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19 WrapperNode [2021-10-28 23:38:19,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:38:19,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:19,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:38:19,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:38:19,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:38:19,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:38:19,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:38:19,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:38:19,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:38:19,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:38:19,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:38:19,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:38:19,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (1/1) ... [2021-10-28 23:38:19,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:38:19,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:38:19,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:38:19,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:38:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:38:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:38:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:38:19,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:38:21,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:38:21,677 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:38:21,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:21 BoogieIcfgContainer [2021-10-28 23:38:21,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:38:21,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:38:21,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:38:21,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:38:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:38:18" (1/3) ... [2021-10-28 23:38:21,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393b40ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:21, skipping insertion in model container [2021-10-28 23:38:21,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:38:19" (2/3) ... [2021-10-28 23:38:21,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393b40ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:38:21, skipping insertion in model container [2021-10-28 23:38:21,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:21" (3/3) ... [2021-10-28 23:38:21,687 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-28 23:38:21,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:38:21,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:38:21,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:38:21,744 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:38:21,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:38:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:38:21,761 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:21,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:38:21,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:38:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 23:38:21,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:38:21,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921377017] [2021-10-28 23:38:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:21,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:38:21,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:38:21,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:38:21,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:38:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:22,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:38:22,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:38:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:22,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:38:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:22,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:38:22,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921377017] [2021-10-28 23:38:22,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921377017] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:22,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:22,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:38:22,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415056100] [2021-10-28 23:38:22,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:38:22,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:38:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:38:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:22,674 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:22,684 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:38:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:38:22,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:38:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:22,692 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:38:22,693 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:38:22,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:38:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:38:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:38:22,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:38:22,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:38:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:22,725 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:38:22,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:38:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:38:22,726 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:22,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:38:22,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:38:22,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:38:22,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:38:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 23:38:22,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:38:22,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995500856] [2021-10-28 23:38:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:22,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:38:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:38:22,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:38:22,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:40:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:40:46,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:15,393 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:42:15,394 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:42:15,395 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:42:15,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:15,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:42:15,601 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:42:15,604 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:42:15,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:42:15 BoogieIcfgContainer [2021-10-28 23:42:15,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:42:15,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:42:15,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:42:15,637 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:42:15,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:38:21" (3/4) ... [2021-10-28 23:42:15,640 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:42:15,690 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:42:15,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:42:15,692 INFO L168 Benchmark]: Toolchain (without parser) took 236845.71 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 52.9 MB in the beginning and 62.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:15,693 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:15,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.98 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 54.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:15,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.46 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:15,695 INFO L168 Benchmark]: Boogie Preprocessor took 46.25 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 51.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:15,695 INFO L168 Benchmark]: RCFGBuilder took 2397.72 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 42.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:15,696 INFO L168 Benchmark]: TraceAbstraction took 233952.85 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 42.1 MB in the beginning and 64.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:15,697 INFO L168 Benchmark]: Witness Printer took 54.21 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:15,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.98 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 54.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.46 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.25 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 51.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2397.72 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 42.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 233952.85 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 42.1 MB in the beginning and 64.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.21 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 233.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 144.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 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 incorrect! [2021-10-28 23:42:15,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90fb4a62-7653-42a9-bd13-655ed36a1187/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...