./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3 --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 debea56186ef4ab268c0be4274b8e0822edc1b01 .................................................................................................................................................................................................................................................. 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3 --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 debea56186ef4ab268c0be4274b8e0822edc1b01 .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:52:29,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:52:29,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:52:29,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:52:29,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:52:29,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:52:29,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:52:29,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:52:29,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:52:29,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:52:29,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:52:29,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:52:29,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:52:29,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:52:29,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:52:29,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:52:29,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:52:29,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:52:29,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:52:29,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:52:29,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:52:29,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:52:29,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:52:29,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:52:29,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:52:29,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:52:29,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:52:29,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:52:29,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:52:29,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:52:29,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:52:29,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:52:29,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:52:29,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:52:29,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:52:29,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:52:29,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:52:29,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:52:29,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:52:29,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:52:29,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:52:29,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:52:29,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:52:29,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:52:29,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:52:29,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:52:29,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:52:29,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:52:29,261 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:52:29,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:52:29,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:52:29,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:52:29,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:52:29,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:52:29,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:52:29,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:52:29,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:52:29,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:52:29,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:52:29,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:52:29,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:52:29,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:52:29,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:52:29,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:52:29,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:29,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:52:29,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:52:29,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:52:29,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:52:29,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:52:29,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:52:29,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:52:29,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:52:29,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:52:29,268 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-15 19:52:29,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:52:29,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:52:29,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:52:29,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:52:29,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:52:29,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-15 19:52:29,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/70e37ae85/892697cf2fb846cb8a73c0e630aaabf5/FLAGff7d36d69 [2021-10-15 19:52:30,110 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:52:30,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-15 19:52:30,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/70e37ae85/892697cf2fb846cb8a73c0e630aaabf5/FLAGff7d36d69 [2021-10-15 19:52:30,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/70e37ae85/892697cf2fb846cb8a73c0e630aaabf5 [2021-10-15 19:52:30,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:52:30,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:52:30,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:30,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:52:30,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:52:30,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8aa8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30, skipping insertion in model container [2021-10-15 19:52:30,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:52:30,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:52:30,754 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-15 19:52:30,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:30,779 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:52:30,803 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-15 19:52:30,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:30,823 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:52:30,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30 WrapperNode [2021-10-15 19:52:30,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:30,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:30,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:52:30,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:52:30,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:30,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:52:30,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:52:30,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:52:30,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:52:30,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:52:30,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:52:30,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:52:30,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (1/1) ... [2021-10-15 19:52:30,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:52:30,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:52:30,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:52:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:52:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:52:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:52:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:52:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:52:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:52:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:52:31,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:52:31,228 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:52:31,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:31 BoogieIcfgContainer [2021-10-15 19:52:31,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:52:31,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:52:31,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:52:31,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:52:31,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:52:30" (1/3) ... [2021-10-15 19:52:31,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ce7ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:31, skipping insertion in model container [2021-10-15 19:52:31,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:30" (2/3) ... [2021-10-15 19:52:31,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ce7ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:31, skipping insertion in model container [2021-10-15 19:52:31,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:31" (3/3) ... [2021-10-15 19:52:31,247 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-15 19:52:31,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:52:31,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:52:31,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:52:31,319 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, mConcurrency=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 [2021-10-15 19:52:31,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:52:31,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 10 transitions, 20 flow [2021-10-15 19:52:31,344 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-10-15 19:52:31,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:31,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:52:31,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 10 places, 10 transitions, 20 flow [2021-10-15 19:52:31,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:52:31,351 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:52:31,351 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:31,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:31,352 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:52:31,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:52:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 19:52:31,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:31,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66386357] [2021-10-15 19:52:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:31,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:52:31,502 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:52:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:52:31,572 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:52:31,574 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:52:31,575 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:52:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:52:31,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:52:31,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:52:31 BoogieIcfgContainer [2021-10-15 19:52:31,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:52:31,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:52:31,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:52:31,612 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:52:31,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:31" (3/4) ... [2021-10-15 19:52:31,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:52:31,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:52:31,621 INFO L168 Benchmark]: Toolchain (without parser) took 1133.81 ms. Allocated memory is still 98.6 MB. Free memory was 65.5 MB in the beginning and 48.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:31,622 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:31,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.30 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 74.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:31,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:31,625 INFO L168 Benchmark]: Boogie Preprocessor took 36.94 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.9 MB in the end (delta: 889.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:31,626 INFO L168 Benchmark]: RCFGBuilder took 338.98 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 62.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:31,632 INFO L168 Benchmark]: TraceAbstraction took 369.61 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 48.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:31,633 INFO L168 Benchmark]: Witness Printer took 5.14 ms. Allocated memory is still 98.6 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:31,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.30 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 74.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.01 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.94 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.9 MB in the end (delta: 889.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.98 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 62.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 369.61 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 48.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.14 ms. Allocated memory is still 98.6 MB. Free memory is still 48.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 274.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 53.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:52:31,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/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-5709675 [2021-10-15 19:52:33,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:52:33,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:52:33,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:52:33,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:52:33,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:52:33,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:52:33,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:52:34,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:52:34,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:52:34,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:52:34,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:52:34,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:52:34,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:52:34,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:52:34,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:52:34,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:52:34,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:52:34,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:52:34,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:52:34,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:52:34,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:52:34,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:52:34,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:52:34,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:52:34,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:52:34,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:52:34,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:52:34,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:52:34,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:52:34,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:52:34,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:52:34,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:52:34,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:52:34,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:52:34,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:52:34,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:52:34,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:52:34,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:52:34,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:52:34,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:52:34,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:52:34,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:52:34,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:52:34,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:52:34,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:52:34,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:52:34,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:52:34,084 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:52:34,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:52:34,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:52:34,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:52:34,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:52:34,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:52:34,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:52:34,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:52:34,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:52:34,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:52:34,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:52:34,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:52:34,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:52:34,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:52:34,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:52:34,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:52:34,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:52:34,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:34,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:52:34,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:52:34,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:52:34,090 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:52:34,090 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:52:34,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:52:34,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:52:34,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:52:34,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:52:34,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:52:34,091 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-15 19:52:34,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:52:34,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:52:34,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:52:34,544 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:52:34,545 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:52:34,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-15 19:52:34,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/3ad7c5f98/a95492f3290743929963a359d0d52ba3/FLAG2e0f75576 [2021-10-15 19:52:35,103 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:52:35,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-15 19:52:35,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/3ad7c5f98/a95492f3290743929963a359d0d52ba3/FLAG2e0f75576 [2021-10-15 19:52:35,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/data/3ad7c5f98/a95492f3290743929963a359d0d52ba3 [2021-10-15 19:52:35,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:52:35,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:52:35,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:35,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:52:35,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:52:35,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55961fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35, skipping insertion in model container [2021-10-15 19:52:35,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:52:35,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:52:35,706 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-15 19:52:35,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:35,725 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:52:35,742 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_2dfe73ef-0393-4315-9a29-f08daa6efce5/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-15 19:52:35,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:35,792 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:52:35,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35 WrapperNode [2021-10-15 19:52:35,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:35,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:35,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:52:35,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:52:35,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:35,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:52:35,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:52:35,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:52:35,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:52:35,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:52:35,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:52:35,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:52:35,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (1/1) ... [2021-10-15 19:52:35,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:52:35,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:52:35,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:52:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:52:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:52:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:52:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:52:36,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:52:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 19:52:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:52:36,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:52:36,261 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:52:36,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:36 BoogieIcfgContainer [2021-10-15 19:52:36,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:52:36,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:52:36,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:52:36,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:52:36,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:52:35" (1/3) ... [2021-10-15 19:52:36,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9d84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:36, skipping insertion in model container [2021-10-15 19:52:36,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:35" (2/3) ... [2021-10-15 19:52:36,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9d84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:36, skipping insertion in model container [2021-10-15 19:52:36,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:36" (3/3) ... [2021-10-15 19:52:36,271 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-15 19:52:36,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:52:36,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:52:36,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:52:36,326 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, mConcurrency=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 [2021-10-15 19:52:36,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:52:36,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 10 transitions, 20 flow [2021-10-15 19:52:36,352 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-10-15 19:52:36,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:36,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:52:36,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 10 places, 10 transitions, 20 flow [2021-10-15 19:52:36,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:52:36,359 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:52:36,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:36,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:36,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:52:36,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:52:36,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 19:52:36,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:52:36,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750422421] [2021-10-15 19:52:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:36,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:52:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:52:36,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:52:36,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:52:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:36,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:52:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:52:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:36,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:52:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:36,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:52:36,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750422421] [2021-10-15 19:52:36,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750422421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:36,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:36,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:52:36,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259220855] [2021-10-15 19:52:36,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:52:36,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:52:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:52:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:52:36,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 10 [2021-10-15 19:52:36,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-15 19:52:36,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:36,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 10 [2021-10-15 19:52:36,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:36,915 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 19:52:36,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:36,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 19:52:36,917 INFO L132 encePairwiseOnDemand]: 7/10 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 19:52:36,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 2 transitions, 8 flow [2021-10-15 19:52:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:52:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:52:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-10-15 19:52:36,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.575 [2021-10-15 19:52:36,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 23 transitions. [2021-10-15 19:52:36,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 23 transitions. [2021-10-15 19:52:36,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:36,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 23 transitions. [2021-10-15 19:52:36,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-10-15 19:52:36,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-10-15 19:52:36,938 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-10-15 19:52:36,940 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 4 states and 23 transitions. [2021-10-15 19:52:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 2 transitions, 8 flow [2021-10-15 19:52:36,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 2 transitions, 8 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:52:36,942 INFO L242 Difference]: Finished difference. Result has 6 places, 0 transitions, 0 flow [2021-10-15 19:52:36,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=10, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=6, PETRI_TRANSITIONS=0} [2021-10-15 19:52:36,944 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 1 predicate places. [2021-10-15 19:52:36,944 INFO L470 AbstractCegarLoop]: Abstraction has has 6 places, 0 transitions, 0 flow [2021-10-15 19:52:36,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-10-15 19:52:36,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:52:36,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 19:52:37,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:52:37,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:52:37,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:52:37 BoogieIcfgContainer [2021-10-15 19:52:37,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:52:37,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:52:37,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:52:37,158 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:52:37,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:36" (3/4) ... [2021-10-15 19:52:37,161 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:52:37,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-15 19:52:37,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 19:52:37,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:52:37,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:52:37,203 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:52:37,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:52:37,205 INFO L168 Benchmark]: Toolchain (without parser) took 1717.40 ms. Allocated memory is still 71.3 MB. Free memory was 53.0 MB in the beginning and 39.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:37,205 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory was 51.3 MB in the beginning and 51.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:37,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 54.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:37,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.35 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:37,207 INFO L168 Benchmark]: Boogie Preprocessor took 51.36 ms. Allocated memory is still 71.3 MB. Free memory was 52.9 MB in the beginning and 51.9 MB in the end (delta: 958.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:37,208 INFO L168 Benchmark]: RCFGBuilder took 344.70 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 42.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:37,208 INFO L168 Benchmark]: TraceAbstraction took 892.05 ms. Allocated memory is still 71.3 MB. Free memory was 42.2 MB in the beginning and 41.6 MB in the end (delta: 611.9 kB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:37,209 INFO L168 Benchmark]: Witness Printer took 45.83 ms. Allocated memory is still 71.3 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:37,212 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 was 51.3 MB in the beginning and 51.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 54.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.35 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 53.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.36 ms. Allocated memory is still 71.3 MB. Free memory was 52.9 MB in the beginning and 51.9 MB in the end (delta: 958.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.70 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 42.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 892.05 ms. Allocated memory is still 71.3 MB. Free memory was 42.2 MB in the beginning and 41.6 MB in the end (delta: 611.9 kB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 45.83 ms. Allocated memory is still 71.3 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 88.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.7ms SsaConstructionTime, 69.0ms SatisfiabilityAnalysisTime, 252.8ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 9 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:52:37,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfe73ef-0393-4315-9a29-f08daa6efce5/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...