./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.c --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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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 1b1e724e6139e9613944145249016fbe4e744e3c .......................................................................................................................................................................................................................................................................................................................................................................... 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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 1b1e724e6139e9613944145249016fbe4e744e3c ........................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:06:45,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:06:45,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:06:45,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:06:45,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:06:45,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:06:45,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:06:45,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:06:45,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:06:45,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:06:45,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:06:45,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:06:45,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:06:45,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:06:45,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:06:45,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:06:45,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:06:45,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:06:45,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:06:45,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:06:45,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:06:45,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:06:45,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:06:45,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:06:45,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:06:45,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:06:45,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:06:45,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:06:45,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:06:45,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:06:45,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:06:45,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:06:45,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:06:45,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:06:45,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:06:45,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:06:45,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:06:45,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:06:45,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:06:45,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:06:45,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:06:45,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:06:45,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:06:45,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:06:45,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:06:45,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:06:45,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:06:45,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:06:45,317 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:06:45,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:06:45,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:06:45,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:06:45,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:06:45,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:06:45,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:06:45,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:06:45,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:06:45,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:06:45,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:06:45,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:06:45,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:06:45,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:06:45,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:06:45,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:06:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:45,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:06:45,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:06:45,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:06:45,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:06:45,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:06:45,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:06:45,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:06:45,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:06:45,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:06:45,326 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b1e724e6139e9613944145249016fbe4e744e3c [2021-10-15 20:06:45,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:06:45,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:06:45,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:06:45,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:06:45,666 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:06:45,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-15 20:06:45,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/a9d7d9bfa/324b6f9a9ee64bc18e029e7c4f09a804/FLAG93c566177 [2021-10-15 20:06:46,288 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:06:46,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-15 20:06:46,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/a9d7d9bfa/324b6f9a9ee64bc18e029e7c4f09a804/FLAG93c566177 [2021-10-15 20:06:46,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/a9d7d9bfa/324b6f9a9ee64bc18e029e7c4f09a804 [2021-10-15 20:06:46,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:06:46,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:06:46,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:46,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:06:46,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:06:46,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:46,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb8a105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46, skipping insertion in model container [2021-10-15 20:06:46,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:46,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:06:46,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:06:46,865 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-15 20:06:46,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:46,906 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:06:46,925 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-15 20:06:46,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:46,979 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:06:46,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46 WrapperNode [2021-10-15 20:06:46,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:46,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:46,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:06:46,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:06:46,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:47,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:06:47,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:06:47,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:06:47,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:06:47,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:06:47,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:06:47,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:06:47,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (1/1) ... [2021-10-15 20:06:47,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:47,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:06:47,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:06:47,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:06:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:06:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:06:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:06:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:06:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:06:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-15 20:06:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:06:47,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:06:47,492 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-15 20:06:47,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:47 BoogieIcfgContainer [2021-10-15 20:06:47,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:06:47,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:06:47,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:06:47,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:06:47,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:06:46" (1/3) ... [2021-10-15 20:06:47,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acf15cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:47, skipping insertion in model container [2021-10-15 20:06:47,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:46" (2/3) ... [2021-10-15 20:06:47,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acf15cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:47, skipping insertion in model container [2021-10-15 20:06:47,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:47" (3/3) ... [2021-10-15 20:06:47,511 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-10-15 20:06:47,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:06:47,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:06:47,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:06:47,576 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 20:06:47,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:06:47,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 20:06:47,616 INFO L129 PetriNetUnfolder]: 6/22 cut-off events. [2021-10-15 20:06:47,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:47,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 22 events. 6/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:06:47,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 20:06:47,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 17 transitions, 34 flow [2021-10-15 20:06:47,629 INFO L129 PetriNetUnfolder]: 5/16 cut-off events. [2021-10-15 20:06:47,629 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:47,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:47,630 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:47,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1988249290, now seen corresponding path program 1 times [2021-10-15 20:06:47,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:47,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45224437] [2021-10-15 20:06:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:47,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:47,881 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 20:06:47,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:47,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45224437] [2021-10-15 20:06:47,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45224437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:47,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:47,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:06:47,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977547760] [2021-10-15 20:06:47,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:06:47,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:06:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:06:47,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 22 [2021-10-15 20:06:47,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 17 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 20:06:47,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:47,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 22 [2021-10-15 20:06:47,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:47,952 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2021-10-15 20:06:47,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:47,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 4. Up to 6 conditions per place. [2021-10-15 20:06:47,955 INFO L132 encePairwiseOnDemand]: 17/22 looper letters, 5 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-10-15 20:06:47,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 17 transitions, 48 flow [2021-10-15 20:06:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:06:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:06:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2021-10-15 20:06:47,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803030303030303 [2021-10-15 20:06:47,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2021-10-15 20:06:47,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2021-10-15 20:06:47,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:47,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2021-10-15 20:06:47,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 20:06:47,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 20:06:47,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 20:06:47,988 INFO L186 Difference]: Start difference. First operand has 13 places, 17 transitions, 34 flow. Second operand 3 states and 53 transitions. [2021-10-15 20:06:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 17 transitions, 48 flow [2021-10-15 20:06:47,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 17 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:47,995 INFO L242 Difference]: Finished difference. Result has 16 places, 16 transitions, 42 flow [2021-10-15 20:06:47,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=16, PETRI_TRANSITIONS=16} [2021-10-15 20:06:48,038 INFO L334 CegarLoopForPetriNet]: 13 programPoint places, 3 predicate places. [2021-10-15 20:06:48,039 INFO L470 AbstractCegarLoop]: Abstraction has has 16 places, 16 transitions, 42 flow [2021-10-15 20:06:48,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 20:06:48,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:48,039 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:48,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:06:48,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:48,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1504580037, now seen corresponding path program 1 times [2021-10-15 20:06:48,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:48,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056518182] [2021-10-15 20:06:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:48,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:48,173 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 20:06:48,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:06:48,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056518182] [2021-10-15 20:06:48,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056518182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:48,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:48,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:06:48,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086793620] [2021-10-15 20:06:48,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:06:48,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:06:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:06:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:06:48,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 22 [2021-10-15 20:06:48,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 16 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 20:06:48,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:48,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 22 [2021-10-15 20:06:48,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:48,233 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-10-15 20:06:48,233 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:06:48,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 23 events. 2/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 19. Up to 6 conditions per place. [2021-10-15 20:06:48,234 INFO L132 encePairwiseOnDemand]: 19/22 looper letters, 5 selfloop transitions, 0 changer transitions 2/17 dead transitions. [2021-10-15 20:06:48,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 58 flow [2021-10-15 20:06:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:06:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:06:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2021-10-15 20:06:48,237 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2021-10-15 20:06:48,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 60 transitions. [2021-10-15 20:06:48,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 60 transitions. [2021-10-15 20:06:48,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:48,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 60 transitions. [2021-10-15 20:06:48,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 20:06:48,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 20:06:48,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 20:06:48,242 INFO L186 Difference]: Start difference. First operand has 16 places, 16 transitions, 42 flow. Second operand 4 states and 60 transitions. [2021-10-15 20:06:48,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 58 flow [2021-10-15 20:06:48,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:06:48,245 INFO L242 Difference]: Finished difference. Result has 20 places, 15 transitions, 42 flow [2021-10-15 20:06:48,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2021-10-15 20:06:48,247 INFO L334 CegarLoopForPetriNet]: 13 programPoint places, 7 predicate places. [2021-10-15 20:06:48,247 INFO L470 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 42 flow [2021-10-15 20:06:48,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 20:06:48,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:48,248 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:48,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:06:48,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2021-10-15 20:06:48,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:06:48,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94879604] [2021-10-15 20:06:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:48,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:06:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:06:48,315 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:06:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:06:48,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:06:48,434 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:06:48,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:06:48,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:06:48,452 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:06:48,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:06:48 BoogieIcfgContainer [2021-10-15 20:06:48,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:06:48,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:06:48,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:06:48,484 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:06:48,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:47" (3/4) ... [2021-10-15 20:06:48,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:06:48,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:06:48,492 INFO L168 Benchmark]: Toolchain (without parser) took 1856.92 ms. Allocated memory is still 123.7 MB. Free memory was 91.2 MB in the beginning and 87.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:48,493 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 42.6 MB in the beginning and 42.6 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:48,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.35 ms. Allocated memory is still 123.7 MB. Free memory was 90.9 MB in the beginning and 99.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:48,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.94 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 97.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:48,496 INFO L168 Benchmark]: Boogie Preprocessor took 35.22 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 95.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:48,501 INFO L168 Benchmark]: RCFGBuilder took 407.99 ms. Allocated memory is still 123.7 MB. Free memory was 95.9 MB in the beginning and 85.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:48,502 INFO L168 Benchmark]: TraceAbstraction took 980.01 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 87.8 MB in the end (delta: -3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:48,503 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 123.7 MB. Free memory was 87.8 MB in the beginning and 87.2 MB in the end (delta: 588.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:48,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 42.6 MB in the beginning and 42.6 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.35 ms. Allocated memory is still 123.7 MB. Free memory was 90.9 MB in the beginning and 99.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.94 ms. Allocated memory is still 123.7 MB. Free memory was 99.2 MB in the beginning and 97.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.22 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 95.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 407.99 ms. Allocated memory is still 123.7 MB. Free memory was 95.9 MB in the beginning and 85.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 980.01 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 87.8 MB in the end (delta: -3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.23 ms. Allocated memory is still 123.7 MB. Free memory was 87.8 MB in the beginning and 87.2 MB in the end (delta: 588.1 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, 0.0ms 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: 9]: 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 to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L20] t = __VERIFIER_nondet_float() [L21] EXPR min[0] [L21] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L21] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L7] COND FALSE !(!cond) [L23] i = 0 [L23] COND TRUE i < sizeof(min) / sizeof(min[0]) [L24] EXPR max[i] [L24] COND TRUE t <= max[i] [L26] EXPR org[i] [L26] EXPR slope[i] [L26] EXPR min[i] [L26] EXPR max[i] [L26] EXPR min[i] [L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i]) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 886.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 195.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 5 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=1, InterpolantAutomatonStates: 7, 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: 15.9ms SsaConstructionTime, 146.3ms SatisfiabilityAnalysisTime, 162.0ms InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:06:48,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:06:51,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:06:51,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:06:51,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:06:51,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:06:51,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:06:51,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:06:51,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:06:51,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:06:51,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:06:51,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:06:51,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:06:51,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:06:51,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:06:51,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:06:51,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:06:51,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:06:51,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:06:51,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:06:51,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:06:51,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:06:51,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:06:51,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:06:51,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:06:51,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:06:51,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:06:51,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:06:51,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:06:51,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:06:51,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:06:51,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:06:51,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:06:51,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:06:51,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:06:51,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:06:51,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:06:51,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:06:51,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:06:51,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:06:51,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:06:51,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:06:51,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:06:51,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:06:51,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:06:51,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:06:51,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:06:51,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:06:51,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:06:51,786 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:06:51,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:06:51,786 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:06:51,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:06:51,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:06:51,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:06:51,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:06:51,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:06:51,788 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:06:51,788 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:06:51,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:06:51,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:06:51,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:06:51,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:06:51,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:06:51,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:06:51,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:06:51,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:51,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:06:51,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:06:51,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:06:51,791 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:06:51,791 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:06:51,791 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:06:51,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:06:51,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:06:51,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:06:51,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:06:51,793 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b1e724e6139e9613944145249016fbe4e744e3c [2021-10-15 20:06:52,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:06:52,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:06:52,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:06:52,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:06:52,322 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:06:52,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-15 20:06:52,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/8b0d9c177/b78cce9354f54d60b80f04498771574b/FLAGdbc5aaa5d [2021-10-15 20:06:53,097 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:06:53,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-15 20:06:53,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/8b0d9c177/b78cce9354f54d60b80f04498771574b/FLAGdbc5aaa5d [2021-10-15 20:06:53,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/data/8b0d9c177/b78cce9354f54d60b80f04498771574b [2021-10-15 20:06:53,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:06:53,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:06:53,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:53,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:06:53,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:06:53,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14949e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53, skipping insertion in model container [2021-10-15 20:06:53,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:06:53,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:06:53,579 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-15 20:06:53,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:53,626 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:06:53,642 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_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-15 20:06:53,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:53,699 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:06:53,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53 WrapperNode [2021-10-15 20:06:53,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:53,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:53,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:06:53,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:06:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:53,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:06:53,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:06:53,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:06:53,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:06:53,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:06:53,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:06:53,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:06:53,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (1/1) ... [2021-10-15 20:06:53,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:06:53,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:06:53,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:06:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-15 20:06:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:06:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:06:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 20:06:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:06:53,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:06:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:06:56,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:06:56,559 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-15 20:06:56,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:56 BoogieIcfgContainer [2021-10-15 20:06:56,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:06:56,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:06:56,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:06:56,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:06:56,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:06:53" (1/3) ... [2021-10-15 20:06:56,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a63fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:56, skipping insertion in model container [2021-10-15 20:06:56,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:53" (2/3) ... [2021-10-15 20:06:56,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a63fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:56, skipping insertion in model container [2021-10-15 20:06:56,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:56" (3/3) ... [2021-10-15 20:06:56,572 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-10-15 20:06:56,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:06:56,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:06:56,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:06:56,650 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 20:06:56,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:06:56,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 20:06:56,720 INFO L129 PetriNetUnfolder]: 6/22 cut-off events. [2021-10-15 20:06:56,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:56,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 22 events. 6/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:06:56,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 20:06:56,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 17 transitions, 34 flow [2021-10-15 20:06:56,765 INFO L129 PetriNetUnfolder]: 5/16 cut-off events. [2021-10-15 20:06:56,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:56,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:56,772 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:56,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:06:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1988249290, now seen corresponding path program 1 times [2021-10-15 20:06:56,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:06:56,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824565895] [2021-10-15 20:06:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:56,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:06:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:06:56,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:06:56,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:06:56,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:06:57,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:06:57,072 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:577) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertConjunctsOfCodeBlocks.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertConjuncts(AnnotateAndAssertConjunctsOfCodeBlocks.java:135) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertConjunctsOfCodeBlocks.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:312) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 31 more [2021-10-15 20:06:57,078 INFO L168 Benchmark]: Toolchain (without parser) took 3692.83 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 48.6 MB in the beginning and 78.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:57,078 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 69.2 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:57,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.47 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 51.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:57,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.52 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 49.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:57,081 INFO L168 Benchmark]: Boogie Preprocessor took 69.14 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:57,082 INFO L168 Benchmark]: RCFGBuilder took 2715.55 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 34.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:06:57,083 INFO L168 Benchmark]: TraceAbstraction took 510.87 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 34.0 MB in the beginning and 78.1 MB in the end (delta: -44.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:06:57,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 69.2 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.47 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 51.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.52 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 49.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.14 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 47.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2715.55 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 34.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 510.87 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 34.0 MB in the beginning and 78.1 MB in the end (delta: -44.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-15 20:06:57,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5a4be0-4ca2-410e-93a5-7f085f1cdf8b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...