./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 ..................................................................................................................................................................................................................................................... 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:23:31,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:23:31,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:23:31,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:23:31,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:23:31,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:23:31,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:23:31,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:23:31,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:23:31,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:23:31,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:23:31,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:23:31,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:23:31,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:23:31,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:23:31,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:23:31,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:23:31,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:23:31,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:23:31,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:23:31,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:23:31,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:23:31,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:23:31,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:23:31,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:23:31,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:23:31,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:23:31,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:23:31,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:23:31,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:23:31,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:23:31,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:23:31,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:23:31,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:23:31,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:23:31,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:23:31,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:23:31,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:23:31,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:23:31,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:23:31,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:23:31,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:23:31,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:23:31,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:23:31,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:23:31,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:23:31,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:23:31,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:23:31,994 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:23:31,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:23:31,995 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:23:31,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:23:31,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:23:31,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:23:31,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:23:31,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:23:31,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:23:31,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:23:31,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:23:31,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:23:31,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:23:31,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:23:32,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:23:32,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:23:32,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:32,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:23:32,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:23:32,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:23:32,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:23:32,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:23:32,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:23:32,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:23:32,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:23:32,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:23:32,003 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-10-28 23:23:32,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:23:32,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:23:32,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:23:32,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:23:32,387 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:23:32,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-28 23:23:32,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/4c3096ace/9765d2b82b1946f5a82e624afee67b3b/FLAGe7a6d6f58 [2021-10-28 23:23:33,051 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:23:33,051 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-28 23:23:33,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/4c3096ace/9765d2b82b1946f5a82e624afee67b3b/FLAGe7a6d6f58 [2021-10-28 23:23:33,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/4c3096ace/9765d2b82b1946f5a82e624afee67b3b [2021-10-28 23:23:33,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:23:33,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:23:33,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:33,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:23:33,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:23:33,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f321a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33, skipping insertion in model container [2021-10-28 23:23:33,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:23:33,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:23:33,658 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-28 23:23:33,670 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-28 23:23:33,677 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-28 23:23:33,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:33,690 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:23:33,708 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-28 23:23:33,712 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-28 23:23:33,716 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-28 23:23:33,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:33,734 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:23:33,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33 WrapperNode [2021-10-28 23:23:33,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:33,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:33,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:23:33,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:23:33,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:33,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:23:33,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:23:33,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:23:33,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:23:33,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:23:33,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:23:33,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:23:33,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (1/1) ... [2021-10-28 23:23:33,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:33,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:33,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:23:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:23:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:23:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:23:33,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:23:34,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:23:34,219 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:23:34,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:34 BoogieIcfgContainer [2021-10-28 23:23:34,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:23:34,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:23:34,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:23:34,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:23:34,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:23:33" (1/3) ... [2021-10-28 23:23:34,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2274a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:34, skipping insertion in model container [2021-10-28 23:23:34,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:33" (2/3) ... [2021-10-28 23:23:34,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2274a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:34, skipping insertion in model container [2021-10-28 23:23:34,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:34" (3/3) ... [2021-10-28 23:23:34,232 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-28 23:23:34,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:23:34,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:23:34,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:23:34,325 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:23:34,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:23:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 23:23:34,383 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:34,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 23:23:34,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-28 23:23:34,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:34,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139631870] [2021-10-28 23:23:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:34,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:34,572 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:34,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:34,621 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:23:34,623 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:34,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:34,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:34,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:23:34,632 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 23:23:34,635 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:23:34,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:23:34 BoogieIcfgContainer [2021-10-28 23:23:34,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:23:34,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:23:34,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:23:34,657 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:23:34,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:34" (3/4) ... [2021-10-28 23:23:34,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:23:34,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:23:34,665 INFO L168 Benchmark]: Toolchain (without parser) took 1224.74 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 66.1 MB in the beginning and 92.5 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:34,666 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 62.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:34,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 54.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:34,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.73 ms. Allocated memory is still 94.4 MB. Free memory was 54.5 MB in the beginning and 52.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:34,669 INFO L168 Benchmark]: Boogie Preprocessor took 46.18 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 51.9 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:34,670 INFO L168 Benchmark]: RCFGBuilder took 379.03 ms. Allocated memory is still 94.4 MB. Free memory was 51.9 MB in the beginning and 43.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:34,671 INFO L168 Benchmark]: TraceAbstraction took 431.97 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 93.0 MB in the end (delta: -50.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:34,672 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 92.5 MB in the end (delta: 505.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:34,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 62.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 54.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.73 ms. Allocated memory is still 94.4 MB. Free memory was 54.5 MB in the beginning and 52.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.18 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 51.9 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 379.03 ms. Allocated memory is still 94.4 MB. Free memory was 51.9 MB in the beginning and 43.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 431.97 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 93.0 MB in the end (delta: -50.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.88 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 92.5 MB in the end (delta: 505.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L25] reach_error() - UnprovableResult [Line: 35]: 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: 44]: 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, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:23:34,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:23:37,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:23:37,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:23:37,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:23:37,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:23:37,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:23:37,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:23:37,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:23:37,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:23:37,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:23:37,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:23:37,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:23:37,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:23:37,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:23:37,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:23:37,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:23:37,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:23:37,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:23:37,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:23:37,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:23:37,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:23:37,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:23:38,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:23:38,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:23:38,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:23:38,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:23:38,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:23:38,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:23:38,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:23:38,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:23:38,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:23:38,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:23:38,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:23:38,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:23:38,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:23:38,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:23:38,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:23:38,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:23:38,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:23:38,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:23:38,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:23:38,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:23:38,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:23:38,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:23:38,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:23:38,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:23:38,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:23:38,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:23:38,068 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:23:38,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:23:38,068 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:23:38,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:23:38,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:23:38,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:23:38,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:23:38,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:23:38,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:23:38,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:23:38,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:23:38,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:23:38,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:23:38,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:23:38,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:23:38,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:23:38,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:23:38,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:38,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:23:38,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:23:38,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:23:38,074 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:23:38,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:23:38,075 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:23:38,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:23:38,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:23:38,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:23:38,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:23:38,076 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-10-28 23:23:38,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:23:38,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:23:38,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:23:38,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:23:38,600 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:23:38,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-28 23:23:38,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/546bc600f/493a76ad51b2441eb006b60a92c9c1a2/FLAGbe01453f4 [2021-10-28 23:23:39,282 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:23:39,284 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-28 23:23:39,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/546bc600f/493a76ad51b2441eb006b60a92c9c1a2/FLAGbe01453f4 [2021-10-28 23:23:39,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/data/546bc600f/493a76ad51b2441eb006b60a92c9c1a2 [2021-10-28 23:23:39,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:23:39,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:23:39,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:39,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:23:39,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:23:39,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:39" (1/1) ... [2021-10-28 23:23:39,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3389c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:39, skipping insertion in model container [2021-10-28 23:23:39,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:39" (1/1) ... [2021-10-28 23:23:39,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:23:39,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:23:39,910 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-28 23:23:39,924 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-28 23:23:39,933 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-28 23:23:39,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:39,968 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:23:40,021 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-28 23:23:40,026 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-28 23:23:40,031 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_0b74a370-7ed5-4174-b76e-e8ee8350fd77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-28 23:23:40,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:40,059 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:23:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40 WrapperNode [2021-10-28 23:23:40,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:40,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:40,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:23:40,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:23:40,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:40,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:23:40,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:23:40,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:23:40,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:23:40,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:23:40,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:23:40,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:23:40,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (1/1) ... [2021-10-28 23:23:40,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:40,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:40,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:40,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:23:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:23:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:23:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:23:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:23:42,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:23:42,137 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:23:42,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:42 BoogieIcfgContainer [2021-10-28 23:23:42,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:23:42,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:23:42,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:23:42,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:23:42,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:23:39" (1/3) ... [2021-10-28 23:23:42,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea42d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:42, skipping insertion in model container [2021-10-28 23:23:42,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:40" (2/3) ... [2021-10-28 23:23:42,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea42d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:42, skipping insertion in model container [2021-10-28 23:23:42,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:42" (3/3) ... [2021-10-28 23:23:42,151 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-28 23:23:42,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:23:42,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:23:42,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:23:42,233 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:23:42,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:23:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 23:23:42,263 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:42,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 23:23:42,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-28 23:23:42,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:23:42,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642910302] [2021-10-28 23:23:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:42,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:23:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:23:42,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:23:42,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:23:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:42,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:23:42,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:42,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:23:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:42,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:23:42,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642910302] [2021-10-28 23:23:42,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642910302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:42,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:23:42,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775190648] [2021-10-28 23:23:42,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:23:42,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:23:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:23:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:42,879 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:43,890 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-28 23:23:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:23:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-28 23:23:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:43,902 INFO L225 Difference]: With dead ends: 27 [2021-10-28 23:23:43,902 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 23:23:43,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:43,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 23:23:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 23:23:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-28 23:23:43,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-10-28 23:23:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:43,941 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-28 23:23:43,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-28 23:23:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:23:43,942 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:43,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:23:43,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:44,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:23:44,159 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-28 23:23:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:23:44,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182307362] [2021-10-28 23:23:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:44,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:23:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:23:44,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:23:44,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:23:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:44,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:23:44,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:44,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:23:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:44,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:23:44,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182307362] [2021-10-28 23:23:44,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182307362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:44,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:44,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:23:44,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435638699] [2021-10-28 23:23:44,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:23:44,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:23:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:23:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:44,830 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:45,269 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-28 23:23:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:23:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:23:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:45,276 INFO L225 Difference]: With dead ends: 11 [2021-10-28 23:23:45,276 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:23:45,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:23:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:23:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 23:23:45,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-28 23:23:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:45,280 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 23:23:45,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 23:23:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:23:45,281 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:45,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:45,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:45,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:23:45,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-28 23:23:45,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:23:45,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456559800] [2021-10-28 23:23:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:45,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:23:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:23:45,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:23:45,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:23:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:45,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:45,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:46,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:23:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:46,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:23:46,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456559800] [2021-10-28 23:23:46,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456559800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:46,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:46,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:23:46,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47563658] [2021-10-28 23:23:46,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:23:46,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:23:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:23:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:46,187 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:46,973 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-28 23:23:46,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:23:46,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 23:23:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:46,981 INFO L225 Difference]: With dead ends: 9 [2021-10-28 23:23:46,981 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:23:46,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:23:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:23:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:23:46,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-28 23:23:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:46,983 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:46,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:23:46,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:23:46,987 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:46,988 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:46,989 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:47,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:47,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:23:47,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:23:47,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:23:47,208 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-28 23:23:47,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-10-28 23:23:47,209 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-28 23:23:47,209 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-28 23:23:47,209 INFO L857 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-10-28 23:23:47,209 INFO L857 garLoopResultBuilder]: For program point L38(lines 1 52) no Hoare annotation was computed. [2021-10-28 23:23:47,210 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-10-28 23:23:47,210 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:23:47,210 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:23:47,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:23:47,211 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-10-28 23:23:47,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-10-28 23:23:47,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-10-28 23:23:47,212 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-28 23:23:47,212 INFO L857 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-10-28 23:23:47,215 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 23:23:47,217 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:23:47,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:23:47 BoogieIcfgContainer [2021-10-28 23:23:47,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:23:47,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:23:47,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:23:47,224 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:23:47,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:42" (3/4) ... [2021-10-28 23:23:47,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:23:47,243 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:23:47,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:23:47,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:47,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:47,290 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:23:47,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:23:47,293 INFO L168 Benchmark]: Toolchain (without parser) took 7657.05 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 40.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,293 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 30.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:47,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.50 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 31.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 30.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,295 INFO L168 Benchmark]: Boogie Preprocessor took 60.36 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 29.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:47,296 INFO L168 Benchmark]: RCFGBuilder took 1964.39 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 39.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,297 INFO L168 Benchmark]: TraceAbstraction took 5080.13 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 28.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,298 INFO L168 Benchmark]: Witness Printer took 66.68 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 40.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:47,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 30.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.50 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 31.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 30.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.36 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 29.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1964.39 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 39.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5080.13 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 28.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 66.68 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 40.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:23:47,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b74a370-7ed5-4174-b76e-e8ee8350fd77/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...