./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 .................................................................................................................................................................................................................................................................................... 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 .................................................................................................................................................................................................................................................................................................. 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 23:20:00,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:20:00,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:20:00,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:20:00,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:20:00,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:20:00,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:20:00,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:20:00,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:20:00,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:20:00,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:20:00,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:20:00,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:20:00,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:20:00,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:20:00,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:20:00,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:20:00,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:20:00,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:20:00,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:20:00,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:20:00,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:20:00,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:20:00,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:20:00,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:20:00,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:20:00,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:20:00,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:20:00,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:20:00,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:20:00,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:20:00,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:20:00,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:20:00,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:20:00,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:20:00,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:20:00,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:20:00,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:20:00,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:20:00,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:20:00,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:20:00,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:20:00,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:20:00,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:20:00,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:20:00,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:20:00,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:20:00,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:20:00,221 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:20:00,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:20:00,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:20:00,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:20:00,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:20:00,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:20:00,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:20:00,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:20:00,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:20:00,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:20:00,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:20:00,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:20:00,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:20:00,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:20:00,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:20:00,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:20:00,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:00,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:20:00,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:20:00,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:20:00,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:20:00,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:20:00,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:20:00,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:20:00,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:20:00,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:20:00,229 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-28 23:20:00,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:20:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:20:00,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:20:00,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:20:00,536 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:20:00,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 23:20:00,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/debb82384/b9593b98928045d3bb3e8e3f91518ff6/FLAG9e1a75c14 [2021-10-28 23:20:01,131 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:20:01,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 23:20:01,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/debb82384/b9593b98928045d3bb3e8e3f91518ff6/FLAG9e1a75c14 [2021-10-28 23:20:01,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/debb82384/b9593b98928045d3bb3e8e3f91518ff6 [2021-10-28 23:20:01,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:20:01,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:20:01,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:01,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:20:01,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:20:01,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539e0d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01, skipping insertion in model container [2021-10-28 23:20:01,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:20:01,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:20:01,760 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 23:20:01,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:01,777 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:20:01,795 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 23:20:01,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:01,811 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:20:01,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01 WrapperNode [2021-10-28 23:20:01,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:01,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:01,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:20:01,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:20:01,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:01,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:20:01,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:20:01,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:20:01,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:20:01,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:20:01,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:20:01,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:20:01,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (1/1) ... [2021-10-28 23:20:01,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:01,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:01,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:20:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:20:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:20:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:20:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:20:02,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:20:02,177 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:20:02,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:02 BoogieIcfgContainer [2021-10-28 23:20:02,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:20:02,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:20:02,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:20:02,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:20:02,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:20:01" (1/3) ... [2021-10-28 23:20:02,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:02, skipping insertion in model container [2021-10-28 23:20:02,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:01" (2/3) ... [2021-10-28 23:20:02,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686f458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:02, skipping insertion in model container [2021-10-28 23:20:02,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:02" (3/3) ... [2021-10-28 23:20:02,193 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-28 23:20:02,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:20:02,200 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:20:02,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:20:02,278 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 23:20:02,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:20:02,298 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 23:20:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:20:02,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:20:02,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:20:02,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:20:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 23:20:02,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:02,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731271458] [2021-10-28 23:20:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:02,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:02,527 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 23:20:02,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:02,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731271458] [2021-10-28 23:20:02,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731271458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:02,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:02,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:20:02,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150685632] [2021-10-28 23:20:02,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:20:02,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:20:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:20:02,580 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 23:20:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:02,592 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:20:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:20:02,593 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 23:20:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:20:02,600 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:20:02,600 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:20:02,603 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 23:20:02,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:20:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:20:02,628 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 23:20:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:20:02,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:20:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:20:02,662 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:20:02,662 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 23:20:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:20:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:20:02,663 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:20:02,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:20:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:20:02,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:20:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 23:20:02,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:02,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323155510] [2021-10-28 23:20:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:02,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:02,689 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:02,746 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:20:02,747 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:20:02,748 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:20:02,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:20:02,754 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:20:02,756 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:20:02,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:20:02 BoogieIcfgContainer [2021-10-28 23:20:02,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:20:02,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:20:02,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:20:02,774 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:20:02,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:02" (3/4) ... [2021-10-28 23:20:02,781 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:20:02,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:20:02,784 INFO L168 Benchmark]: Toolchain (without parser) took 1273.86 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 73.9 MB in the beginning and 127.9 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:02,785 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:02,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.97 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 77.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:02,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:02,790 INFO L168 Benchmark]: Boogie Preprocessor took 38.36 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.9 MB in the end (delta: 772.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:02,791 INFO L168 Benchmark]: RCFGBuilder took 294.06 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 66.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:02,792 INFO L168 Benchmark]: TraceAbstraction took 590.96 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 65.8 MB in the beginning and 128.6 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:02,792 INFO L168 Benchmark]: Witness Printer took 8.24 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 127.9 MB in the end (delta: 703.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:02,796 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 102.8 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.97 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 77.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.60 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.36 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.9 MB in the end (delta: 772.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 294.06 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 66.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 590.96 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 65.8 MB in the beginning and 128.6 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.24 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 127.9 MB in the end (delta: 703.0 kB). 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 - 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 < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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 23:20:02,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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 23:20:05,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:20:05,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:20:05,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:20:05,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:20:05,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:20:05,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:20:05,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:20:05,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:20:05,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:20:05,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:20:05,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:20:05,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:20:05,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:20:05,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:20:05,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:20:05,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:20:05,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:20:05,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:20:05,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:20:05,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:20:05,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:20:05,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:20:05,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:20:05,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:20:05,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:20:05,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:20:05,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:20:05,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:20:05,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:20:05,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:20:05,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:20:05,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:20:05,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:20:05,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:20:05,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:20:05,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:20:05,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:20:05,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:20:05,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:20:05,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:20:05,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:20:05,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:20:05,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:20:05,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:20:05,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:20:05,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:20:05,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:20:05,556 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:20:05,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:20:05,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:20:05,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:20:05,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:20:05,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:20:05,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:20:05,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:20:05,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:20:05,558 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:20:05,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:20:05,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:20:05,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:20:05,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:20:05,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:20:05,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:20:05,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:20:05,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:05,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:20:05,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:20:05,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:20:05,560 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:20:05,560 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:20:05,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:20:05,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:20:05,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:20:05,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:20:05,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:20:05,562 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-28 23:20:05,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:20:05,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:20:05,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:20:05,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:20:05,959 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:20:05,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 23:20:06,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/ddc48bbba/6e101c9d645147409e4994dcd1f9796f/FLAG9e41c50bd [2021-10-28 23:20:06,588 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:20:06,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-28 23:20:06,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/ddc48bbba/6e101c9d645147409e4994dcd1f9796f/FLAG9e41c50bd [2021-10-28 23:20:06,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/data/ddc48bbba/6e101c9d645147409e4994dcd1f9796f [2021-10-28 23:20:07,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:20:07,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:20:07,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:07,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:20:07,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:20:07,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:06" (1/1) ... [2021-10-28 23:20:07,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b20f84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07, skipping insertion in model container [2021-10-28 23:20:07,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:06" (1/1) ... [2021-10-28 23:20:07,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:20:07,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:20:07,207 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 23:20:07,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:07,230 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:20:07,249 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_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-28 23:20:07,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:07,264 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:20:07,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07 WrapperNode [2021-10-28 23:20:07,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:07,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:07,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:20:07,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:20:07,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:07,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:20:07,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:20:07,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:20:07,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:20:07,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:20:07,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:20:07,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:20:07,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (1/1) ... [2021-10-28 23:20:07,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:07,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:07,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:20:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:20:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:20:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:20:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:20:09,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:20:09,700 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:20:09,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:09 BoogieIcfgContainer [2021-10-28 23:20:09,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:20:09,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:20:09,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:20:09,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:20:09,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:20:06" (1/3) ... [2021-10-28 23:20:09,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42362b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:09, skipping insertion in model container [2021-10-28 23:20:09,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:07" (2/3) ... [2021-10-28 23:20:09,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42362b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:09, skipping insertion in model container [2021-10-28 23:20:09,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:09" (3/3) ... [2021-10-28 23:20:09,710 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-28 23:20:09,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:20:09,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:20:09,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:20:09,769 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 23:20:09,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:20:09,782 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 23:20:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:20:09,786 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:20:09,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:20:09,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:20:09,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 23:20:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:20:09,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53042374] [2021-10-28 23:20:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:09,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:20:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:20:09,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:20:09,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:20:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:10,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:20:10,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:20:10,362 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 23:20:10,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:20:10,396 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 23:20:10,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:20:10,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53042374] [2021-10-28 23:20:10,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53042374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:10,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:10,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:20:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6484524] [2021-10-28 23:20:10,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:20:10,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:20:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:20:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:20:10,431 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 23:20:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:20:10,442 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:20:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:20:10,443 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 23:20:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:20:10,459 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:20:10,459 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:20:10,460 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 23:20:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:20:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:20:10,479 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 23:20:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:20:10,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:20:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:20:10,480 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:20:10,481 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 23:20:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:20:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:20:10,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:20:10,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:20:10,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:10,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:20:10,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:20:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 23:20:10,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:20:10,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416515448] [2021-10-28 23:20:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:10,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:20:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:20:10,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:20:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:20:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:21,591 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:20:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:20:23,910 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:20:23,910 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:20:23,911 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:20:23,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:24,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:20:24,116 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:20:24,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:20:24,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:20:24 BoogieIcfgContainer [2021-10-28 23:20:24,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:20:24,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:20:24,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:20:24,137 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:20:24,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:09" (3/4) ... [2021-10-28 23:20:24,140 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:20:24,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:20:24,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:20:24,175 INFO L168 Benchmark]: Toolchain (without parser) took 17170.95 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 30.0 MB in the beginning and 49.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,175 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:24,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.56 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 30.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.87 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,177 INFO L168 Benchmark]: Boogie Preprocessor took 24.18 ms. Allocated memory is still 54.5 MB. Free memory was 29.4 MB in the beginning and 28.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:24,178 INFO L168 Benchmark]: RCFGBuilder took 2362.74 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 28.3 MB in the beginning and 55.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,179 INFO L168 Benchmark]: TraceAbstraction took 14432.53 ms. Allocated memory is still 77.6 MB. Free memory was 54.8 MB in the beginning and 51.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,180 INFO L168 Benchmark]: Witness Printer took 35.90 ms. Allocated memory is still 77.6 MB. Free memory was 51.4 MB in the beginning and 49.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:24,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.56 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 30.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.87 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 29.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.18 ms. Allocated memory is still 54.5 MB. Free memory was 29.4 MB in the beginning and 28.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2362.74 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 28.3 MB in the beginning and 55.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14432.53 ms. Allocated memory is still 77.6 MB. Free memory was 54.8 MB in the beginning and 51.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Witness Printer took 35.90 ms. Allocated memory is still 77.6 MB. Free memory was 51.4 MB in the beginning and 49.6 MB in the end (delta: 1.8 MB). 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 - 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 < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, 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, 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, 11.2s 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 23:20:24,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd4310db-213d-4c38-9d59-5c4a2bb8bceb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...