./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt --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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt --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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:31:38,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:31:38,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:31:38,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:31:38,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:31:38,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:31:38,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:31:38,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:31:38,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:31:38,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:31:38,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:31:38,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:31:38,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:31:38,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:31:38,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:31:38,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:31:38,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:31:38,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:31:38,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:31:38,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:31:38,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:31:38,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:31:38,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:31:38,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:31:38,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:31:38,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:31:38,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:31:38,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:31:38,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:31:38,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:31:38,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:31:38,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:31:38,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:31:38,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:31:38,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:31:38,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:31:38,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:31:38,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:31:38,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:31:38,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:31:38,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:31:38,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:31:39,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:31:39,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:31:39,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:31:39,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:31:39,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:31:39,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:31:39,003 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:31:39,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:31:39,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:31:39,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:31:39,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:31:39,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:31:39,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:31:39,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:31:39,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:31:39,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:31:39,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:31:39,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:31:39,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:31:39,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:31:39,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:31:39,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:31:39,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:31:39,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:31:39,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:31:39,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:31:39,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:31:39,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:31:39,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:31:39,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:31:39,010 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_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2021-10-13 00:31:39,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:31:39,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:31:39,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:31:39,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:31:39,296 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:31:39,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-13 00:31:39,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/036f1587f/722b8379599f43b7b65405ddda391c0b/FLAG7ecac2167 [2021-10-13 00:31:39,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:31:39,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-13 00:31:39,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/036f1587f/722b8379599f43b7b65405ddda391c0b/FLAG7ecac2167 [2021-10-13 00:31:40,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/036f1587f/722b8379599f43b7b65405ddda391c0b [2021-10-13 00:31:40,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:31:40,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:31:40,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:31:40,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:31:40,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:31:40,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597eea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40, skipping insertion in model container [2021-10-13 00:31:40,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:31:40,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:31:40,413 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_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-13 00:31:40,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:31:40,443 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:31:40,488 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_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-13 00:31:40,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:31:40,507 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:31:40,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40 WrapperNode [2021-10-13 00:31:40,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:31:40,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:31:40,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:31:40,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:31:40,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:31:40,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:31:40,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:31:40,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:31:40,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:31:40,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:31:40,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:31:40,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:31:40,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (1/1) ... [2021-10-13 00:31:40,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:31:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:31:40,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:31:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:31:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:31:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:31:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 00:31:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:31:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:31:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:31:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:31:41,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:31:41,099 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 00:31:41,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:41 BoogieIcfgContainer [2021-10-13 00:31:41,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:31:41,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:31:41,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:31:41,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:31:41,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:31:40" (1/3) ... [2021-10-13 00:31:41,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:41, skipping insertion in model container [2021-10-13 00:31:41,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:40" (2/3) ... [2021-10-13 00:31:41,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d32c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:41, skipping insertion in model container [2021-10-13 00:31:41,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:41" (3/3) ... [2021-10-13 00:31:41,120 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-13 00:31:41,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:31:41,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:31:41,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:31:41,213 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:31:41,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:31:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:31:41,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:41,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:41,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-13 00:31:41,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165887040] [2021-10-13 00:31:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:41,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:41,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:31:41,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165887040] [2021-10-13 00:31:41,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165887040] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:41,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:41,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:31:41,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962842333] [2021-10-13 00:31:41,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:31:41,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:31:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:31:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:31:41,461 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 00:31:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:41,479 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-13 00:31:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:31:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2021-10-13 00:31:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:41,492 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:31:41,492 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 00:31:41,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:31:41,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 00:31:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 00:31:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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) [2021-10-13 00:31:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-13 00:31:41,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-13 00:31:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:41,537 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-13 00:31:41,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 00:31:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-13 00:31:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:31:41,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:41,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:41,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:31:41,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-13 00:31:41,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:41,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487369744] [2021-10-13 00:31:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:41,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:41,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:31:41,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487369744] [2021-10-13 00:31:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487369744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:41,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:41,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:31:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257151085] [2021-10-13 00:31:41,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:41,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:31:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:41,645 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-13 00:31:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:41,704 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-10-13 00:31:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:31:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2021-10-13 00:31:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:41,706 INFO L225 Difference]: With dead ends: 53 [2021-10-13 00:31:41,706 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 00:31:41,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 00:31:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-13 00:31:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-10-13 00:31:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 00:31:41,716 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-13 00:31:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:41,717 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 00:31:41,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-10-13 00:31:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 00:31:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:31:41,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:41,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:41,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:31:41,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-10-13 00:31:41,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:41,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238500279] [2021-10-13 00:31:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:41,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:41,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:31:41,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238500279] [2021-10-13 00:31:41,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238500279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:41,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:41,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:31:41,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947400127] [2021-10-13 00:31:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:41,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:31:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:41,858 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:41,942 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-10-13 00:31:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:31:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:31:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:41,944 INFO L225 Difference]: With dead ends: 55 [2021-10-13 00:31:41,944 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:31:41,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:31:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-10-13 00:31:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-10-13 00:31:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 00:31:41,950 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2021-10-13 00:31:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:41,951 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 00:31:41,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 00:31:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:31:41,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:41,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:41,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:31:41,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:41,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2021-10-13 00:31:41,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:41,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989732418] [2021-10-13 00:31:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:41,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:42,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:31:42,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989732418] [2021-10-13 00:31:42,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989732418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:42,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:42,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:31:42,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128069187] [2021-10-13 00:31:42,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:42,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:31:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:42,058 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-13 00:31:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:42,136 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2021-10-13 00:31:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:31:42,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-13 00:31:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:42,146 INFO L225 Difference]: With dead ends: 57 [2021-10-13 00:31:42,146 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 00:31:42,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 00:31:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-10-13 00:31:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-10-13 00:31:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 00:31:42,152 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-10-13 00:31:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:42,153 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 00:31:42,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-13 00:31:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 00:31:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:31:42,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:42,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:42,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:31:42,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2021-10-13 00:31:42,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:42,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732415929] [2021-10-13 00:31:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:42,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:42,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:31:42,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732415929] [2021-10-13 00:31:42,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732415929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:42,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:42,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:31:42,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213665950] [2021-10-13 00:31:42,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:42,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:31:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:42,209 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 00:31:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:42,272 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-10-13 00:31:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:31:42,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-13 00:31:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:42,279 INFO L225 Difference]: With dead ends: 55 [2021-10-13 00:31:42,279 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:31:42,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:31:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-10-13 00:31:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-10-13 00:31:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 00:31:42,285 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2021-10-13 00:31:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:42,286 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 00:31:42,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 00:31:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 00:31:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:31:42,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:42,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:42,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:31:42,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-13 00:31:42,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:31:42,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474286956] [2021-10-13 00:31:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:42,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:31:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:31:42,315 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:31:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:31:42,359 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:31:42,359 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:31:42,380 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:31:42,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:31:42,392 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:31:42,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:31:42 BoogieIcfgContainer [2021-10-13 00:31:42,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:31:42,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:31:42,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:31:42,430 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:31:42,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:41" (3/4) ... [2021-10-13 00:31:42,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:31:42,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:31:42,437 INFO L168 Benchmark]: Toolchain (without parser) took 2238.62 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.8 MB in the beginning and 75.5 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:42,438 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:42,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.23 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 77.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,441 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,442 INFO L168 Benchmark]: RCFGBuilder took 512.18 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 61.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,443 INFO L168 Benchmark]: TraceAbstraction took 1320.63 ms. Allocated memory is still 100.7 MB. Free memory was 60.6 MB in the beginning and 76.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,444 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.5 MB in the end (delta: 575.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:42,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.23 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.6 MB in the beginning and 77.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.18 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 61.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1320.63 ms. Allocated memory is still 100.7 MB. Free memory was 60.6 MB in the beginning and 76.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.42 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.5 MB in the end (delta: 575.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 72]: 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 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1184.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 13.0ms, AutomataDifference: 363.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.0ms SsaConstructionTime, 157.0ms SatisfiabilityAnalysisTime, 299.2ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-10-13 00:31:42,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/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-4e77c04 [2021-10-13 00:31:45,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:31:45,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:31:45,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:31:45,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:31:45,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:31:45,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:31:45,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:31:45,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:31:45,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:31:45,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:31:45,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:31:45,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:31:45,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:31:45,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:31:45,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:31:45,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:31:45,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:31:45,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:31:45,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:31:45,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:31:45,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:31:45,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:31:45,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:31:45,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:31:45,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:31:45,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:31:45,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:31:45,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:31:45,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:31:45,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:31:45,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:31:45,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:31:45,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:31:45,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:31:45,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:31:45,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:31:45,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:31:45,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:31:45,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:31:45,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:31:45,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:31:45,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:31:45,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:31:45,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:31:45,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:31:45,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:31:45,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:31:45,289 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:31:45,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:31:45,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:31:45,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:31:45,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:31:45,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:31:45,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:31:45,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:31:45,291 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:31:45,292 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:31:45,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:31:45,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:31:45,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:31:45,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:31:45,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:31:45,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:31:45,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:31:45,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:31:45,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:31:45,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:31:45,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:31:45,295 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:31:45,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:31:45,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:31:45,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:31:45,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:31:45,296 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_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2021-10-13 00:31:45,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:31:45,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:31:45,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:31:45,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:31:45,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:31:45,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-13 00:31:45,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/9cea80e19/2be18824e8f3462f8d6bf2c93c9ea9fb/FLAGd66c6c4b5 [2021-10-13 00:31:46,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:31:46,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-13 00:31:46,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/9cea80e19/2be18824e8f3462f8d6bf2c93c9ea9fb/FLAGd66c6c4b5 [2021-10-13 00:31:46,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/data/9cea80e19/2be18824e8f3462f8d6bf2c93c9ea9fb [2021-10-13 00:31:46,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:31:46,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:31:46,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:31:46,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:31:46,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:31:46,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:46" (1/1) ... [2021-10-13 00:31:46,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba63b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:46, skipping insertion in model container [2021-10-13 00:31:46,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:46" (1/1) ... [2021-10-13 00:31:46,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:31:46,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:31:47,144 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_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-13 00:31:47,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:31:47,162 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:31:47,188 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_37632312-552f-4da0-961d-7f84f2a410d2/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-13 00:31:47,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:31:47,215 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:31:47,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47 WrapperNode [2021-10-13 00:31:47,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:31:47,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:31:47,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:31:47,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:31:47,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:31:47,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:31:47,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:31:47,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:31:47,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:31:47,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:31:47,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:31:47,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:31:47,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (1/1) ... [2021-10-13 00:31:47,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:31:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:31:47,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:31:47,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:31:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:31:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:31:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:31:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:31:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:31:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-13 00:31:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:31:48,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:31:48,011 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 00:31:48,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:48 BoogieIcfgContainer [2021-10-13 00:31:48,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:31:48,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:31:48,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:31:48,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:31:48,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:31:46" (1/3) ... [2021-10-13 00:31:48,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531e4527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:48, skipping insertion in model container [2021-10-13 00:31:48,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:47" (2/3) ... [2021-10-13 00:31:48,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531e4527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:48, skipping insertion in model container [2021-10-13 00:31:48,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:48" (3/3) ... [2021-10-13 00:31:48,039 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-13 00:31:48,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:31:48,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:31:48,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:31:48,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:31:48,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:31:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:31:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:31:48,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:48,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:48,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:48,188 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-13 00:31:48,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:48,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400775203] [2021-10-13 00:31:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:48,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:48,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:48,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:48,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:31:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:31:48,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:48,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:48,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:48,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400775203] [2021-10-13 00:31:48,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400775203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:48,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:48,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:31:48,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846461118] [2021-10-13 00:31:48,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:31:48,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:31:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:31:48,459 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 00:31:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:48,488 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-13 00:31:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:31:48,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2021-10-13 00:31:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:48,504 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:31:48,504 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 00:31:48,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:31:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 00:31:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 00:31:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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) [2021-10-13 00:31:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-13 00:31:48,560 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-13 00:31:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:48,561 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-13 00:31:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 00:31:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-13 00:31:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:31:48,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:48,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:48,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:48,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:48,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-13 00:31:48,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:48,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105018018] [2021-10-13 00:31:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:48,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:48,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:48,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:31:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:48,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:31:48,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:48,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:48,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:48,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105018018] [2021-10-13 00:31:48,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105018018] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:48,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:48,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:31:48,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119659345] [2021-10-13 00:31:48,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:31:48,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:31:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:31:48,985 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:31:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:49,060 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-10-13 00:31:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:31:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 11 [2021-10-13 00:31:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:49,062 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:31:49,062 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:31:49,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:31:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:31:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-13 00:31:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-10-13 00:31:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-13 00:31:49,070 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-13 00:31:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:49,071 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-13 00:31:49,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-10-13 00:31:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-13 00:31:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:31:49,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:49,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:49,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:49,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:49,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:49,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-13 00:31:49,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:49,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895605825] [2021-10-13 00:31:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:49,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:49,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:49,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:31:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:49,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:31:49,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:49,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:49,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895605825] [2021-10-13 00:31:49,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895605825] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:49,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:49,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:31:49,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256505973] [2021-10-13 00:31:49,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:49,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:49,541 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 00:31:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:49,600 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-13 00:31:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:31:49,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-13 00:31:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:49,602 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:31:49,603 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 00:31:49,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 00:31:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 00:31:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2021-10-13 00:31:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-13 00:31:49,609 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2021-10-13 00:31:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:49,610 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-13 00:31:49,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-13 00:31:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-13 00:31:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:31:49,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:49,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:49,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:49,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:49,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:49,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-13 00:31:49,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:49,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086314376] [2021-10-13 00:31:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:49,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:49,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:49,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:31:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:49,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:31:49,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:50,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:50,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:50,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086314376] [2021-10-13 00:31:50,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086314376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:50,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:50,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:31:50,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137996621] [2021-10-13 00:31:50,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:31:50,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:31:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:31:50,063 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-13 00:31:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:50,136 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-10-13 00:31:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:31:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-10-13 00:31:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:50,143 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:31:50,144 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:31:50,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:31:50,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:31:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2021-10-13 00:31:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2021-10-13 00:31:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-13 00:31:50,156 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-10-13 00:31:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:50,157 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-13 00:31:50,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-13 00:31:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-13 00:31:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:31:50,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:50,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:50,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:50,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:50,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-13 00:31:50,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:50,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887233423] [2021-10-13 00:31:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:50,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:50,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:50,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:50,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:31:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:31:50,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:50,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:50,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:50,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887233423] [2021-10-13 00:31:50,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887233423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:50,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:50,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:31:50,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132193055] [2021-10-13 00:31:50,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:31:50,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:31:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:50,817 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-10-13 00:31:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:50,827 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-10-13 00:31:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:31:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 18 [2021-10-13 00:31:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:50,834 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:31:50,834 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:31:50,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:31:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:31:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:31:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2021-10-13 00:31:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-13 00:31:50,839 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-10-13 00:31:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:50,840 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-13 00:31:50,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-10-13 00:31:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-13 00:31:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:31:50,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:50,841 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:50,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:51,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:51,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-13 00:31:51,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:51,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316081682] [2021-10-13 00:31:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:51,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:51,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:51,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:31:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:51,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:31:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:51,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:51,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:51,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316081682] [2021-10-13 00:31:51,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316081682] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:51,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:51,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-13 00:31:51,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963093667] [2021-10-13 00:31:51,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:31:51,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:31:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:31:51,421 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-13 00:31:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:51,524 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-13 00:31:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:31:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 18 [2021-10-13 00:31:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:51,526 INFO L225 Difference]: With dead ends: 40 [2021-10-13 00:31:51,526 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 00:31:51,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:31:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 00:31:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-13 00:31:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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) [2021-10-13 00:31:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-13 00:31:51,533 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2021-10-13 00:31:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:51,534 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-13 00:31:51,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-10-13 00:31:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-13 00:31:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:31:51,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:51,536 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:51,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:51,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:51,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-10-13 00:31:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:51,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595712384] [2021-10-13 00:31:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:51,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:51,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:51,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:31:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:51,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:31:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:52,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:52,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:52,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595712384] [2021-10-13 00:31:52,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595712384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:52,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:52,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:31:52,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935114747] [2021-10-13 00:31:52,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:31:52,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:31:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:31:52,147 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-10-13 00:31:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:52,202 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-13 00:31:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:31:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-10-13 00:31:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:52,212 INFO L225 Difference]: With dead ends: 43 [2021-10-13 00:31:52,212 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:31:52,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:31:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:31:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 00:31:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 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) [2021-10-13 00:31:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-13 00:31:52,220 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2021-10-13 00:31:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-13 00:31:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-10-13 00:31:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-13 00:31:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:31:52,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:31:52,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:31:52,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:52,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:52,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:31:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:31:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-13 00:31:52,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:31:52,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928267543] [2021-10-13 00:31:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:31:52,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:31:52,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:31:52,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:31:52,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:31:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:31:52,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:31:52,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:31:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:52,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:31:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:31:53,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:31:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928267543] [2021-10-13 00:31:53,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928267543] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:31:53,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:31:53,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-10-13 00:31:53,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661169094] [2021-10-13 00:31:53,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:31:53,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:31:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:31:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:31:53,499 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-10-13 00:31:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:31:53,729 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-13 00:31:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:31:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 22 [2021-10-13 00:31:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:31:53,732 INFO L225 Difference]: With dead ends: 23 [2021-10-13 00:31:53,732 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:31:53,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 477.6ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:31:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:31:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:31:53,733 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) [2021-10-13 00:31:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:31:53,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-13 00:31:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:31:53,734 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:31:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-10-13 00:31:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:31:53,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:31:53,737 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:31:53,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:31:53,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:31:53,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:31:53,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:53,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:31:54,201 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:31:54,201 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:31:54,201 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-13 00:31:54,201 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-13 00:31:54,201 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 00:31:54,202 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-13 00:31:54,202 INFO L857 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2021-10-13 00:31:54,202 INFO L853 garLoopResultBuilder]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= |ULTIMATE.start___signbit_float_#res| (_ bv1 32)) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= .cse0 ULTIMATE.start___signbit_float_~x))) [2021-10-13 00:31:54,202 INFO L857 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-13 00:31:54,203 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= .cse0 ULTIMATE.start___signbit_float_~x))) [2021-10-13 00:31:54,204 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-13 00:31:54,204 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24))) [2021-10-13 00:31:54,205 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-13 00:31:54,205 INFO L857 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-13 00:31:54,205 INFO L853 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2021-10-13 00:31:54,205 INFO L857 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-13 00:31:54,205 INFO L853 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24))) [2021-10-13 00:31:54,206 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)))) [2021-10-13 00:31:54,206 INFO L860 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2021-10-13 00:31:54,206 INFO L857 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-13 00:31:54,206 INFO L857 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-13 00:31:54,206 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2021-10-13 00:31:54,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:31:54,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:31:54 BoogieIcfgContainer [2021-10-13 00:31:54,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:31:54,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:31:54,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:31:54,234 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:31:54,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:48" (3/4) ... [2021-10-13 00:31:54,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:31:54,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-13 00:31:54,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:31:54,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:31:54,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:31:54,282 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() [2021-10-13 00:31:54,282 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-13 00:31:54,283 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-13 00:31:54,283 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) [2021-10-13 00:31:54,284 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-13 00:31:54,313 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:31:54,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:31:54,316 INFO L168 Benchmark]: Toolchain (without parser) took 7409.49 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 46.6 MB in the beginning and 40.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,316 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 62.9 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:54,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.79 ms. Allocated memory is still 81.8 MB. Free memory was 46.4 MB in the beginning and 66.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.55 ms. Allocated memory is still 81.8 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,318 INFO L168 Benchmark]: Boogie Preprocessor took 78.01 ms. Allocated memory is still 81.8 MB. Free memory was 64.4 MB in the beginning and 63.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:31:54,319 INFO L168 Benchmark]: RCFGBuilder took 616.59 ms. Allocated memory is still 81.8 MB. Free memory was 62.8 MB in the beginning and 49.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,319 INFO L168 Benchmark]: TraceAbstraction took 6202.66 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 43.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,320 INFO L168 Benchmark]: Witness Printer took 79.97 ms. Allocated memory is still 109.1 MB. Free memory was 43.9 MB in the beginning and 40.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:31:54,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.0 MB in the beginning and 62.9 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.79 ms. Allocated memory is still 81.8 MB. Free memory was 46.4 MB in the beginning and 66.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.55 ms. Allocated memory is still 81.8 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.01 ms. Allocated memory is still 81.8 MB. Free memory was 64.4 MB in the beginning and 63.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 616.59 ms. Allocated memory is still 81.8 MB. Free memory was 62.8 MB in the beginning and 49.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6202.66 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 49.0 MB in the beginning and 43.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.97 ms. Allocated memory is still 109.1 MB. Free memory was 43.9 MB in the beginning and 40.5 MB in the end (delta: 3.4 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6065.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 18.1ms, AutomataDifference: 745.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 248.7ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 234 SDtfs, 203 SDslu, 403 SDs, 0 SdLazy, 147 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 792.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 75.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 182 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 99.3ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 141.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 88.2ms SsaConstructionTime, 301.6ms SatisfiabilityAnalysisTime, 2201.5ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 888 SizeOfPredicates, 38 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x RESULT: Ultimate proved your program to be correct! [2021-10-13 00:31:54,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37632312-552f-4da0-961d-7f84f2a410d2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...