./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf .............................................................................................................................................................................................................................................................................. 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:16:11,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:11,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:11,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:11,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:11,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:11,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:11,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:11,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:11,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:11,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:11,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:11,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:11,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:11,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:11,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:11,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:11,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:11,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:11,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:11,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:11,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:11,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:11,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:11,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:11,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:11,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:11,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:11,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:11,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:11,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:11,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:11,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:11,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:11,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:11,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:11,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:11,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:11,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:11,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:11,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:11,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:16:11,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:11,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:11,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:11,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:11,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:11,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:11,348 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:11,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:11,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:11,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:16:11,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:11,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:11,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:11,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:11,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:11,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:11,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:11,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:11,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:11,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:11,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:11,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:11,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:11,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:11,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:11,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:11,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:16:11,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:16:11,354 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:11,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:11,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:11,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:11,384 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2021-10-15 20:16:11,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:11,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:11,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:11,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:11,740 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:11,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench/freire2.c [2021-10-15 20:16:11,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/f6c0397e7/40a87a7129c64027913380d336aec7ab/FLAG0a0dbff37 [2021-10-15 20:16:12,274 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:12,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c [2021-10-15 20:16:12,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/f6c0397e7/40a87a7129c64027913380d336aec7ab/FLAG0a0dbff37 [2021-10-15 20:16:12,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/f6c0397e7/40a87a7129c64027913380d336aec7ab [2021-10-15 20:16:12,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:12,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:12,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:12,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:12,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:12,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a6c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12, skipping insertion in model container [2021-10-15 20:16:12,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:12,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:12,773 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-10-15 20:16:12,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:12,801 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:12,812 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-10-15 20:16:12,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:12,834 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:12,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12 WrapperNode [2021-10-15 20:16:12,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:12,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:12,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:12,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:12,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:12,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:12,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:12,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:12,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:12,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:12,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:12,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:12,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (1/1) ... [2021-10-15 20:16:12,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:12,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:12,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:16:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:13,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:13,182 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 20:16:13,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:13 BoogieIcfgContainer [2021-10-15 20:16:13,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:13,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:13,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:13,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:13,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:12" (1/3) ... [2021-10-15 20:16:13,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372fd3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:13, skipping insertion in model container [2021-10-15 20:16:13,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:12" (2/3) ... [2021-10-15 20:16:13,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372fd3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:13, skipping insertion in model container [2021-10-15 20:16:13,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:13" (3/3) ... [2021-10-15 20:16:13,193 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2021-10-15 20:16:13,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:13,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 20:16:13,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:13,253 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 20:16:13,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 20:16:13,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 39 transitions, 78 flow [2021-10-15 20:16:13,298 INFO L129 PetriNetUnfolder]: 9/39 cut-off events. [2021-10-15 20:16:13,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:13,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 39 events. 9/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:16:13,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 39 transitions, 78 flow [2021-10-15 20:16:13,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 34 transitions, 68 flow [2021-10-15 20:16:13,323 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-10-15 20:16:13,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:13,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:13,324 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 20:16:13,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:16:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:13,330 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-10-15 20:16:13,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:13,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484829235] [2021-10-15 20:16:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:13,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:13,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 20:16:13,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979201728] [2021-10-15 20:16:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:13,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:16:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:13,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:16:13,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:16:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:16:13,531 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:16:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:16:13,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:16:13,579 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:16:13,580 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:13,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:16:13,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-15 20:16:13,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:16:13,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:16:13 BoogieIcfgContainer [2021-10-15 20:16:13,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:16:13,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:16:13,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:16:13,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:16:13,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:13" (3/4) ... [2021-10-15 20:16:13,825 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:16:13,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:16:13,827 INFO L168 Benchmark]: Toolchain (without parser) took 1199.57 ms. Allocated memory is still 130.0 MB. Free memory was 106.9 MB in the beginning and 102.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:13,828 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 59.7 MB in the beginning and 59.7 MB in the end (delta: 41.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:13,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.33 ms. Allocated memory is still 130.0 MB. Free memory was 106.7 MB in the beginning and 96.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:13,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.23 ms. Allocated memory is still 130.0 MB. Free memory was 96.2 MB in the beginning and 94.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:13,830 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 ms. Allocated memory is still 130.0 MB. Free memory was 94.7 MB in the beginning and 93.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:13,830 INFO L168 Benchmark]: RCFGBuilder took 287.21 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 83.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:13,831 INFO L168 Benchmark]: TraceAbstraction took 634.48 ms. Allocated memory is still 130.0 MB. Free memory was 82.8 MB in the beginning and 102.4 MB in the end (delta: -19.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:13,832 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 102.3 MB in the end (delta: 103.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:13,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 59.7 MB in the beginning and 59.7 MB in the end (delta: 41.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.33 ms. Allocated memory is still 130.0 MB. Free memory was 106.7 MB in the beginning and 96.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.23 ms. Allocated memory is still 130.0 MB. Free memory was 96.2 MB in the beginning and 94.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.76 ms. Allocated memory is still 130.0 MB. Free memory was 94.7 MB in the beginning and 93.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.21 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 83.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 634.48 ms. Allocated memory is still 130.0 MB. Free memory was 82.8 MB in the beginning and 102.4 MB in the end (delta: -19.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.98 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 102.3 MB in the end (delta: 103.9 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 566.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.6ms SsaConstructionTime, 46.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:16:13,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:16:16,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:16,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:16,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:16,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:16,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:16,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:16,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:16,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:16,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:16,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:16,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:16,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:16,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:16,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:16,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:16,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:16,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:16,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:16,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:16,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:16,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:16,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:16,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:16,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:16,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:16,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:16,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:16,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:16,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:16,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:16,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:16,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:16,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:16,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:16,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:16,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:16,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:16,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:16,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:16,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:16,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:16:16,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:16,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:16,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:16,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:16,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:16,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:16,420 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:16,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:16,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:16,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:16,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:16,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:16,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:16,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:16,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:16:16,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:16:16,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:16,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:16,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:16,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:16,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:16,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:16,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:16,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:16,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:16,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:16,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:16,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:16:16,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:16:16,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:16,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:16,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:16,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:16,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:16:16,426 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d32d2c3ebf4b6346bc2a38a0b1f36e05f930cf [2021-10-15 20:16:16,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:16,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:16,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:16,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:16,817 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:16,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench/freire2.c [2021-10-15 20:16:16,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/549f237ad/942506f5be144d7d8c5d9a576e1b47ca/FLAG45f30dc99 [2021-10-15 20:16:17,479 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:17,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c [2021-10-15 20:16:17,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/549f237ad/942506f5be144d7d8c5d9a576e1b47ca/FLAG45f30dc99 [2021-10-15 20:16:17,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/data/549f237ad/942506f5be144d7d8c5d9a576e1b47ca [2021-10-15 20:16:17,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:17,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:17,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:17,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:17,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:17,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:17" (1/1) ... [2021-10-15 20:16:17,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2e605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:17, skipping insertion in model container [2021-10-15 20:16:17,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:17" (1/1) ... [2021-10-15 20:16:17,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:17,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:18,066 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-10-15 20:16:18,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:18,132 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:18,183 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_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2021-10-15 20:16:18,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:18,231 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18 WrapperNode [2021-10-15 20:16:18,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:18,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:18,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:18,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:18,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:18,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:18,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:18,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:18,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:18,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:18,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:18,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:18,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (1/1) ... [2021-10-15 20:16:18,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:18,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:18,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:18,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:16:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:18,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:29,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:29,342 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 20:16:29,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:29 BoogieIcfgContainer [2021-10-15 20:16:29,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:29,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:29,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:29,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:29,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:17" (1/3) ... [2021-10-15 20:16:29,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:29, skipping insertion in model container [2021-10-15 20:16:29,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:18" (2/3) ... [2021-10-15 20:16:29,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:29, skipping insertion in model container [2021-10-15 20:16:29,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:29" (3/3) ... [2021-10-15 20:16:29,352 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2021-10-15 20:16:29,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:29,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 20:16:29,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:29,409 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 20:16:29,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 20:16:29,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 39 transitions, 78 flow [2021-10-15 20:16:29,443 INFO L129 PetriNetUnfolder]: 9/39 cut-off events. [2021-10-15 20:16:29,443 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:29,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 39 events. 9/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:16:29,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 39 transitions, 78 flow [2021-10-15 20:16:29,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 34 transitions, 68 flow [2021-10-15 20:16:29,453 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-10-15 20:16:29,453 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:29,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:29,454 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 20:16:29,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:16:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-10-15 20:16:29,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:16:29,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162032373] [2021-10-15 20:16:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:29,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:16:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:16:29,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:16:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:16:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:29,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:16:29,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:16:30,036 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 20:16:30,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:16:36,565 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 20:16:36,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:16:36,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162032373] [2021-10-15 20:16:36,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162032373] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:36,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:36,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-15 20:16:36,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689070823] [2021-10-15 20:16:36,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:16:36,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:16:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:16:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:16:36,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2021-10-15 20:16:36,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 34 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 20:16:36,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:36,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2021-10-15 20:16:36,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:06,667 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-10-15 20:17:06,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:06,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-10-15 20:17:06,669 INFO L132 encePairwiseOnDemand]: 18/39 looper letters, 9 selfloop transitions, 15 changer transitions 0/30 dead transitions. [2021-10-15 20:17:06,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 108 flow [2021-10-15 20:17:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:17:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:17:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2021-10-15 20:17:06,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37606837606837606 [2021-10-15 20:17:06,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 88 transitions. [2021-10-15 20:17:06,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 88 transitions. [2021-10-15 20:17:06,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:06,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 88 transitions. [2021-10-15 20:17:06,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 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 20:17:06,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 20:17:06,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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 20:17:06,692 INFO L186 Difference]: Start difference. First operand has 27 places, 34 transitions, 68 flow. Second operand 6 states and 88 transitions. [2021-10-15 20:17:06,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 108 flow [2021-10-15 20:17:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:17:06,697 INFO L242 Difference]: Finished difference. Result has 34 places, 30 transitions, 109 flow [2021-10-15 20:17:06,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2021-10-15 20:17:06,700 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-10-15 20:17:06,700 INFO L470 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 109 flow [2021-10-15 20:17:06,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 20:17:06,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:06,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:06,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:06,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:06,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:17:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2021-10-15 20:17:06,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:06,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187200227] [2021-10-15 20:17:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:06,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:06,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:06,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:17:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:07,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:17:07,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:10,464 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 20:17:10,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:16,649 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-15 20:17:18,684 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-15 20:17:36,081 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 20:17:36,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:36,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187200227] [2021-10-15 20:17:36,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187200227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:36,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:36,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-15 20:17:36,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732623034] [2021-10-15 20:17:36,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:17:36,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:17:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-10-15 20:17:36,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2021-10-15 20:17:36,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 109 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 20:17:36,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:36,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2021-10-15 20:17:36,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:48,622 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-15 20:17:51,498 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 20:18:35,766 INFO L129 PetriNetUnfolder]: 1/31 cut-off events. [2021-10-15 20:18:35,766 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 20:18:35,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 31 events. 1/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 61. Up to 12 conditions per place. [2021-10-15 20:18:35,767 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 10 selfloop transitions, 15 changer transitions 0/31 dead transitions. [2021-10-15 20:18:35,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 164 flow [2021-10-15 20:18:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:18:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:18:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2021-10-15 20:18:35,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.326007326007326 [2021-10-15 20:18:35,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 89 transitions. [2021-10-15 20:18:35,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 89 transitions. [2021-10-15 20:18:35,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:18:35,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 89 transitions. [2021-10-15 20:18:35,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 20:18:35,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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 20:18:35,774 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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 20:18:35,774 INFO L186 Difference]: Start difference. First operand has 34 places, 30 transitions, 109 flow. Second operand 7 states and 89 transitions. [2021-10-15 20:18:35,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 164 flow [2021-10-15 20:18:35,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 31 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:18:35,801 INFO L242 Difference]: Finished difference. Result has 41 places, 31 transitions, 169 flow [2021-10-15 20:18:35,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2021-10-15 20:18:35,802 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-10-15 20:18:35,803 INFO L470 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 169 flow [2021-10-15 20:18:35,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 20:18:35,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:18:35,810 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:18:35,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:18:36,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:18:36,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:18:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:18:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2021-10-15 20:18:36,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:18:36,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800756058] [2021-10-15 20:18:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:18:36,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:18:36,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:18:36,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:18:36,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:18:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:18:37,515 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:18:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:18:38,879 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-15 20:18:38,880 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:18:38,881 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:18:38,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:18:39,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:18:39,089 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:18:39,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:18:39 BoogieIcfgContainer [2021-10-15 20:18:39,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:18:39,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:18:39,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:18:39,108 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:18:39,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:29" (3/4) ... [2021-10-15 20:18:39,110 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:18:39,153 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:18:39,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:18:39,155 INFO L168 Benchmark]: Toolchain (without parser) took 141313.03 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 56.5 MB in the end (delta: -6.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:18:39,156 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:18:39,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.81 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 67.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:18:39,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 83.9 MB. Free memory was 67.1 MB in the beginning and 65.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:18:39,157 INFO L168 Benchmark]: Boogie Preprocessor took 58.51 ms. Allocated memory is still 83.9 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:18:39,158 INFO L168 Benchmark]: RCFGBuilder took 10992.28 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 52.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:18:39,159 INFO L168 Benchmark]: TraceAbstraction took 129761.31 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 58.5 MB in the end (delta: -6.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:18:39,159 INFO L168 Benchmark]: Witness Printer took 45.91 ms. Allocated memory is still 83.9 MB. Free memory was 58.5 MB in the beginning and 56.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:18:39,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.81 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 67.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.44 ms. Allocated memory is still 83.9 MB. Free memory was 67.1 MB in the beginning and 65.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.51 ms. Allocated memory is still 83.9 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10992.28 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 52.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 129761.31 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 58.5 MB in the end (delta: -6.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.91 ms. Allocated memory is still 83.9 MB. Free memory was 58.5 MB in the beginning and 56.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 [L32] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 129690.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 89832.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 30 SDslu, 27 SDs, 0 SdLazy, 75 SolverSat, 16 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 75522.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 31183.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=2, InterpolantAutomatonStates: 13, 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: 31.2ms SsaConstructionTime, 2541.7ms SatisfiabilityAnalysisTime, 35043.8ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 209 SizeOfPredicates, 10 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:18:39,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04a9a7f-b017-49a3-b647-0cc24bb4b2a6/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...