./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:53:15,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:53:15,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:53:15,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:53:15,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:53:15,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:53:15,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:53:15,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:53:15,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:53:15,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:53:15,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:53:15,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:53:15,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:53:15,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:53:15,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:53:15,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:53:15,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:53:15,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:53:15,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:53:15,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:53:15,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:53:15,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:53:15,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:53:15,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:53:15,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:53:15,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:53:15,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:53:15,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:53:15,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:53:15,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:53:15,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:53:15,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:53:15,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:53:15,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:53:15,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:53:15,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:53:15,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:53:15,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:53:15,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:53:15,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:53:15,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:53:15,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:53:15,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:53:15,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:53:15,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:53:15,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:53:15,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:53:15,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:53:15,308 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:53:15,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:53:15,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:53:15,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:53:15,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:53:15,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:53:15,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:53:15,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:53:15,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:53:15,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:53:15,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:53:15,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:53:15,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:53:15,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:53:15,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:53:15,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:53:15,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:53:15,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:53:15,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:53:15,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:53:15,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:53:15,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:53:15,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:53:15,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:53:15,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:53:15,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:53:15,314 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-11-23 13:53:15,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:53:15,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:53:15,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:53:15,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:53:15,621 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:53:15,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-11-23 13:53:15,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/a42b3ca49/6e448932ed5f4039b51e99b41e7f7cdd/FLAGd5b11e8f1 [2021-11-23 13:53:16,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:53:16,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-11-23 13:53:16,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/a42b3ca49/6e448932ed5f4039b51e99b41e7f7cdd/FLAGd5b11e8f1 [2021-11-23 13:53:16,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/a42b3ca49/6e448932ed5f4039b51e99b41e7f7cdd [2021-11-23 13:53:16,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:53:16,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:53:16,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:53:16,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:53:16,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:53:16,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18512456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16, skipping insertion in model container [2021-11-23 13:53:16,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:53:16,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:53:16,764 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-11-23 13:53:16,767 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-11-23 13:53:16,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:53:16,776 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:53:16,800 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-11-23 13:53:16,801 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-11-23 13:53:16,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:53:16,814 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:53:16,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16 WrapperNode [2021-11-23 13:53:16,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:53:16,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:53:16,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:53:16,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:53:16,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,872 INFO L137 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 185 [2021-11-23 13:53:16,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:53:16,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:53:16,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:53:16,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:53:16,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:53:16,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:53:16,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:53:16,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:53:16,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (1/1) ... [2021-11-23 13:53:16,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:53:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:53:16,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:53:16,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:53:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:53:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:53:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:53:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 13:53:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:53:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:53:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:53:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:53:17,039 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:53:17,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:53:17,292 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:53:17,299 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:53:17,300 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 13:53:17,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17 BoogieIcfgContainer [2021-11-23 13:53:17,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:53:17,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:53:17,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:53:17,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:53:17,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:53:16" (1/3) ... [2021-11-23 13:53:17,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610cb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:17, skipping insertion in model container [2021-11-23 13:53:17,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:16" (2/3) ... [2021-11-23 13:53:17,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3610cb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:17, skipping insertion in model container [2021-11-23 13:53:17,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17" (3/3) ... [2021-11-23 13:53:17,319 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-11-23 13:53:17,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:53:17,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:53:17,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:53:17,418 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:53:17,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:53:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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) [2021-11-23 13:53:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:53:17,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:17,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:17,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-11-23 13:53:17,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:17,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817483473] [2021-11-23 13:53:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:17,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:17,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817483473] [2021-11-23 13:53:17,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817483473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:17,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:17,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:53:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169073170] [2021-11-23 13:53:17,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:17,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:17,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:17,668 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-23 13:53:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:17,766 INFO L93 Difference]: Finished difference Result 90 states and 134 transitions. [2021-11-23 13:53:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:17,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 [2021-11-23 13:53:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:17,807 INFO L225 Difference]: With dead ends: 90 [2021-11-23 13:53:17,808 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 13:53:17,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:17,827 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 16 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:17,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 170 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 13:53:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-11-23 13:53:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-11-23 13:53:17,891 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2021-11-23 13:53:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:17,892 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-11-23 13:53:17,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-23 13:53:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-11-23 13:53:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:53:17,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:17,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:17,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:53:17,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-11-23 13:53:17,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:17,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643447403] [2021-11-23 13:53:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:17,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:18,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:18,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643447403] [2021-11-23 13:53:18,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643447403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:18,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:18,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:53:18,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306601204] [2021-11-23 13:53:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:18,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:18,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:18,011 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:18,051 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-11-23 13:53:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:53:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:18,054 INFO L225 Difference]: With dead ends: 77 [2021-11-23 13:53:18,054 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 13:53:18,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:18,056 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 21 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:18,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 180 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 13:53:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-11-23 13:53:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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) [2021-11-23 13:53:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-23 13:53:18,078 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-11-23 13:53:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:18,079 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-23 13:53:18,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-23 13:53:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:53:18,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:18,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:18,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:53:18,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-11-23 13:53:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:18,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704247560] [2021-11-23 13:53:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:18,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:18,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704247560] [2021-11-23 13:53:18,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704247560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:18,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:18,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:53:18,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136774919] [2021-11-23 13:53:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:18,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:18,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:18,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:18,199 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-11-23 13:53:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:18,240 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-11-23 13:53:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:18,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-11-23 13:53:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:18,242 INFO L225 Difference]: With dead ends: 79 [2021-11-23 13:53:18,242 INFO L226 Difference]: Without dead ends: 66 [2021-11-23 13:53:18,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:18,244 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:18,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 194 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-23 13:53:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-11-23 13:53:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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) [2021-11-23 13:53:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-23 13:53:18,252 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-11-23 13:53:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:18,252 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-23 13:53:18,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-11-23 13:53:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-23 13:53:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:53:18,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:18,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:18,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:53:18,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-11-23 13:53:18,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:18,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121125725] [2021-11-23 13:53:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:18,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:18,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:18,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121125725] [2021-11-23 13:53:18,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121125725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:18,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:18,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:53:18,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057136019] [2021-11-23 13:53:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:18,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:18,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:18,346 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-23 13:53:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:18,417 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-11-23 13:53:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-11-23 13:53:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:18,422 INFO L225 Difference]: With dead ends: 79 [2021-11-23 13:53:18,423 INFO L226 Difference]: Without dead ends: 66 [2021-11-23 13:53:18,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:18,426 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:18,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 194 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-23 13:53:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-11-23 13:53:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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) [2021-11-23 13:53:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-23 13:53:18,443 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-11-23 13:53:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:18,444 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-23 13:53:18,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-23 13:53:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-23 13:53:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:53:18,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:18,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:18,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:53:18,446 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-11-23 13:53:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643230645] [2021-11-23 13:53:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:18,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643230645] [2021-11-23 13:53:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643230645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:18,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:18,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:53:18,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382927163] [2021-11-23 13:53:18,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:18,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:53:18,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:53:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:53:18,522 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-23 13:53:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:18,537 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-11-23 13:53:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:53:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-23 13:53:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:18,539 INFO L225 Difference]: With dead ends: 50 [2021-11-23 13:53:18,539 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 13:53:18,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:53:18,542 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:18,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 13:53:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-23 13:53:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 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) [2021-11-23 13:53:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2021-11-23 13:53:18,558 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2021-11-23 13:53:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:18,559 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2021-11-23 13:53:18,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-23 13:53:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2021-11-23 13:53:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 13:53:18,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:18,562 INFO L514 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] [2021-11-23 13:53:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:53:18,567 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-11-23 13:53:18,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:18,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74195092] [2021-11-23 13:53:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:18,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:53:18,625 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:53:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:53:18,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:53:18,690 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:53:18,691 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 13:53:18,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 13:53:18,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:53:18,699 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 13:53:18,701 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:53:18,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:53:18 BoogieIcfgContainer [2021-11-23 13:53:18,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:53:18,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:53:18,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:53:18,743 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:53:18,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:17" (3/4) ... [2021-11-23 13:53:18,746 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:53:18,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:53:18,747 INFO L158 Benchmark]: Toolchain (without parser) took 2180.74ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.8MB in the beginning and 81.4MB in the end (delta: -27.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:18,748 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 60.1MB in the beginning and 60.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:18,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.42ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 81.6MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:53:18,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.70ms. Allocated memory is still 107.0MB. Free memory was 81.6MB in the beginning and 79.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:18,749 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:53:18,750 INFO L158 Benchmark]: RCFGBuilder took 394.65ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 62.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 13:53:18,750 INFO L158 Benchmark]: TraceAbstraction took 1438.86ms. Allocated memory is still 107.0MB. Free memory was 62.2MB in the beginning and 82.1MB in the end (delta: -19.9MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-23 13:53:18,751 INFO L158 Benchmark]: Witness Printer took 3.99ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 81.4MB in the end (delta: 703.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:18,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 60.1MB in the beginning and 60.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.42ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 81.6MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.70ms. Allocated memory is still 107.0MB. Free memory was 81.6MB in the beginning and 79.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 394.65ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 62.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1438.86ms. Allocated memory is still 107.0MB. Free memory was 62.2MB in the beginning and 82.1MB in the end (delta: -19.9MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Witness Printer took 3.99ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 81.4MB in the end (delta: 703.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 77]: 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 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) [L59] return x != x; VAL [\old(x)=4286578691, \result=1, x=4286578691] [L70] RET, EXPR isnan_float(x) [L70] EXPR isnan_float(x) && !isnan_float(y) [L70] CALL, EXPR isnan_float(y) [L59] return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L70] RET, EXPR isnan_float(y) [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578691, y=4286578690] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578691, y=4286578690] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) [L15] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [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) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L38] RET, EXPR __fpclassify_float(x) [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=4286578691, \old(y)=4286578690, \result=4286578690, x=4286578691, y=4286578690] [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) [L59] return x != x; VAL [\old(x)=4286578691, \result=1, x=4286578691] [L76] RET, EXPR isnan_float(x) [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] CALL, EXPR isnan_float(y) [L59] return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L76] RET, EXPR isnan_float(y) [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578690, x=4286578691, y=4286578690] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [res=4286578690, x=4286578691, y=4286578690] - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 846 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 343 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 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 [2021-11-23 13:53:18,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:53:21,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:53:21,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:53:21,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:53:21,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:53:21,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:53:21,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:53:21,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:53:21,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:53:21,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:53:21,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:53:21,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:53:21,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:53:21,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:53:21,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:53:21,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:53:21,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:53:21,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:53:21,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:53:21,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:53:21,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:53:21,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:53:21,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:53:21,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:53:21,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:53:21,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:53:21,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:53:21,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:53:21,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:53:21,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:53:21,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:53:21,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:53:21,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:53:21,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:53:21,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:53:21,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:53:21,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:53:21,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:53:21,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:53:21,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:53:21,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:53:21,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 13:53:21,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:53:21,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:53:21,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:53:21,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:53:21,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:53:21,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:53:21,465 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:53:21,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:53:21,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:53:21,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:53:21,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:53:21,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:53:21,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:53:21,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:53:21,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:53:21,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:53:21,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:53:21,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:53:21,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:53:21,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:53:21,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:53:21,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:53:21,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:53:21,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:53:21,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:53:21,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:53:21,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:53:21,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:53:21,472 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:53:21,472 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:53:21,472 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:53:21,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:53:21,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:53:21,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:53:21,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:53:21,474 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-11-23 13:53:21,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:53:21,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:53:21,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:53:21,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:53:21,853 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:53:21,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-11-23 13:53:21,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/b4487ad49/7d7e973bcc2f408194091d82d77377c7/FLAGc3df4500e [2021-11-23 13:53:22,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:53:22,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-11-23 13:53:22,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/b4487ad49/7d7e973bcc2f408194091d82d77377c7/FLAGc3df4500e [2021-11-23 13:53:22,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/data/b4487ad49/7d7e973bcc2f408194091d82d77377c7 [2021-11-23 13:53:22,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:53:22,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:53:22,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:53:22,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:53:22,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:53:22,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:22" (1/1) ... [2021-11-23 13:53:22,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5666d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:22, skipping insertion in model container [2021-11-23 13:53:22,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:22" (1/1) ... [2021-11-23 13:53:22,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:53:22,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:53:23,045 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-11-23 13:53:23,050 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-11-23 13:53:23,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:53:23,079 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:53:23,174 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-11-23 13:53:23,180 WARN L230 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_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-11-23 13:53:23,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:53:23,206 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:53:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23 WrapperNode [2021-11-23 13:53:23,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:53:23,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:53:23,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:53:23,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:53:23,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,277 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 176 [2021-11-23 13:53:23,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:53:23,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:53:23,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:53:23,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:53:23,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:53:23,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:53:23,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:53:23,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:53:23,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (1/1) ... [2021-11-23 13:53:23,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:53:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:53:23,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:53:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:53:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:53:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:53:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:53:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:53:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:53:23,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:53:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-23 13:53:23,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:53:23,549 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:53:23,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:53:23,842 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:53:23,848 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:53:23,849 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 13:53:23,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:23 BoogieIcfgContainer [2021-11-23 13:53:23,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:53:23,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:53:23,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:53:23,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:53:23,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:53:22" (1/3) ... [2021-11-23 13:53:23,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1587d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:23, skipping insertion in model container [2021-11-23 13:53:23,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:23" (2/3) ... [2021-11-23 13:53:23,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1587d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:53:23, skipping insertion in model container [2021-11-23 13:53:23,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:23" (3/3) ... [2021-11-23 13:53:23,860 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-11-23 13:53:23,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:53:23,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:53:23,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:53:23,924 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:53:23,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:53:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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) [2021-11-23 13:53:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:53:23,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:23,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:23,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-11-23 13:53:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:23,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975927266] [2021-11-23 13:53:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:23,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:23,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:23,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:23,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:53:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:24,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 13:53:24,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:24,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:24,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:24,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975927266] [2021-11-23 13:53:24,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975927266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:24,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:24,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:53:24,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396021367] [2021-11-23 13:53:24,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:24,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:53:24,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:53:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:53:24,302 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-23 13:53:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:24,332 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-11-23 13:53:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:53:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 [2021-11-23 13:53:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:24,345 INFO L225 Difference]: With dead ends: 82 [2021-11-23 13:53:24,345 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 13:53:24,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:53:24,357 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:24,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 13:53:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-23 13:53:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 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) [2021-11-23 13:53:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-11-23 13:53:24,396 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-11-23 13:53:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:24,397 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-11-23 13:53:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-23 13:53:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-11-23 13:53:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:53:24,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:24,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:24,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:24,612 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-11-23 13:53:24,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:24,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308562497] [2021-11-23 13:53:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:24,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:24,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:24,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:24,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:53:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:24,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:24,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:24,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:24,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308562497] [2021-11-23 13:53:24,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308562497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:24,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:24,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:24,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081969096] [2021-11-23 13:53:24,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:24,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:24,787 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 13:53:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:24,831 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-11-23 13:53:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:24,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-23 13:53:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:24,833 INFO L225 Difference]: With dead ends: 82 [2021-11-23 13:53:24,833 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 13:53:24,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:24,835 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 16 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:24,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 13:53:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-11-23 13:53:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-11-23 13:53:24,844 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-11-23 13:53:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:24,844 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-11-23 13:53:24,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 13:53:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-11-23 13:53:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:53:24,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:24,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:24,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:25,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:25,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-11-23 13:53:25,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:25,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787570942] [2021-11-23 13:53:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:25,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:25,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:25,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:53:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:25,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:25,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:25,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:25,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787570942] [2021-11-23 13:53:25,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787570942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:25,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:25,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:53:25,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718766833] [2021-11-23 13:53:25,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:25,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:53:25,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:53:25,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:53:25,303 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-11-23 13:53:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:25,381 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-11-23 13:53:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 [2021-11-23 13:53:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:25,383 INFO L225 Difference]: With dead ends: 96 [2021-11-23 13:53:25,383 INFO L226 Difference]: Without dead ends: 83 [2021-11-23 13:53:25,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:25,385 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 63 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:25,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 266 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-23 13:53:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-11-23 13:53:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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) [2021-11-23 13:53:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-11-23 13:53:25,395 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-11-23 13:53:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:25,396 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-11-23 13:53:25,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-11-23 13:53:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-11-23 13:53:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:53:25,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:25,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:25,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:25,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-11-23 13:53:25,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:25,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812709814] [2021-11-23 13:53:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:25,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:25,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:25,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:53:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:25,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:25,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:25,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:26,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:26,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812709814] [2021-11-23 13:53:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812709814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:26,074 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:26,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-23 13:53:26,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100743664] [2021-11-23 13:53:26,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:26,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:26,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:26,086 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-23 13:53:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:26,551 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-11-23 13:53:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:53:26,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2021-11-23 13:53:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:26,554 INFO L225 Difference]: With dead ends: 149 [2021-11-23 13:53:26,554 INFO L226 Difference]: Without dead ends: 140 [2021-11-23 13:53:26,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:26,556 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 212 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:26,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 543 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:53:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-23 13:53:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-11-23 13:53:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 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) [2021-11-23 13:53:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-11-23 13:53:26,586 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-11-23 13:53:26,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:26,587 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-11-23 13:53:26,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-23 13:53:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-11-23 13:53:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 13:53:26,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:26,591 INFO L514 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] [2021-11-23 13:53:26,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:26,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:26,804 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-11-23 13:53:26,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:26,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850083092] [2021-11-23 13:53:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:26,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:26,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:26,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:53:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:26,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:26,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:27,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:27,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850083092] [2021-11-23 13:53:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850083092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:27,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-23 13:53:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081623524] [2021-11-23 13:53:27,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:53:27,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:53:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:27,724 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2021-11-23 13:53:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:28,697 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-11-23 13:53:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:53:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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 [2021-11-23 13:53:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:28,700 INFO L225 Difference]: With dead ends: 180 [2021-11-23 13:53:28,700 INFO L226 Difference]: Without dead ends: 178 [2021-11-23 13:53:28,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:53:28,702 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 255 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:28,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 466 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:53:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-23 13:53:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-11-23 13:53:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 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) [2021-11-23 13:53:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-11-23 13:53:28,722 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-11-23 13:53:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:28,722 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-11-23 13:53:28,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 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) [2021-11-23 13:53:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-11-23 13:53:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:53:28,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:28,724 INFO L514 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, 1] [2021-11-23 13:53:28,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:28,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:28,925 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-11-23 13:53:28,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:28,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137174935] [2021-11-23 13:53:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:28,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:28,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:28,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:53:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:29,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:29,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137174935] [2021-11-23 13:53:29,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137174935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:29,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:29,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-23 13:53:29,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487806107] [2021-11-23 13:53:29,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:53:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:53:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:53:29,242 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-23 13:53:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:29,559 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-11-23 13:53:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:53:29,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 23 [2021-11-23 13:53:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:29,562 INFO L225 Difference]: With dead ends: 166 [2021-11-23 13:53:29,562 INFO L226 Difference]: Without dead ends: 131 [2021-11-23 13:53:29,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:29,564 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 191 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:29,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 609 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:53:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-23 13:53:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-11-23 13:53:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 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) [2021-11-23 13:53:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-11-23 13:53:29,577 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-11-23 13:53:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:29,578 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-11-23 13:53:29,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-23 13:53:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-11-23 13:53:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:53:29,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:29,579 INFO L514 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, 1, 1] [2021-11-23 13:53:29,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:29,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:29,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-11-23 13:53:29,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080407051] [2021-11-23 13:53:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:29,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:29,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:29,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:53:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:29,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:29,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:29,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:29,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:29,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080407051] [2021-11-23 13:53:29,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080407051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:29,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:29,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:53:29,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565244870] [2021-11-23 13:53:29,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:29,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:53:29,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:53:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:53:29,962 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-23 13:53:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:30,050 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-11-23 13:53:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-11-23 13:53:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:30,061 INFO L225 Difference]: With dead ends: 157 [2021-11-23 13:53:30,061 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 13:53:30,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:30,063 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 57 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:30,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 264 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 13:53:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-11-23 13:53:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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) [2021-11-23 13:53:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-11-23 13:53:30,091 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-11-23 13:53:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:30,092 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-11-23 13:53:30,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-23 13:53:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-11-23 13:53:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:53:30,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:30,094 INFO L514 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, 1, 1] [2021-11-23 13:53:30,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:30,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-11-23 13:53:30,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050383229] [2021-11-23 13:53:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:30,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:30,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:30,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:53:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:30,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:53:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:30,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:30,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050383229] [2021-11-23 13:53:30,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050383229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:30,442 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:30,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:53:30,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423536938] [2021-11-23 13:53:30,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:30,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:53:30,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:53:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:53:30,445 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-23 13:53:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:30,465 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-11-23 13:53:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:53:30,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-23 13:53:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:30,466 INFO L225 Difference]: With dead ends: 96 [2021-11-23 13:53:30,467 INFO L226 Difference]: Without dead ends: 94 [2021-11-23 13:53:30,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:53:30,468 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:30,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-23 13:53:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-11-23 13:53:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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) [2021-11-23 13:53:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-11-23 13:53:30,481 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-11-23 13:53:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:30,482 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-11-23 13:53:30,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-23 13:53:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-11-23 13:53:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:53:30,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:30,484 INFO L514 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, 1, 1, 1] [2021-11-23 13:53:30,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:30,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:30,697 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-11-23 13:53:30,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:30,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413716352] [2021-11-23 13:53:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:30,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:30,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:30,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:30,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:53:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:30,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:30,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:30,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:31,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:31,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413716352] [2021-11-23 13:53:31,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413716352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:31,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-23 13:53:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099331505] [2021-11-23 13:53:31,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:31,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:31,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:31,029 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2021-11-23 13:53:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:31,346 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-11-23 13:53:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:53:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 25 [2021-11-23 13:53:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:31,348 INFO L225 Difference]: With dead ends: 131 [2021-11-23 13:53:31,348 INFO L226 Difference]: Without dead ends: 118 [2021-11-23 13:53:31,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:31,349 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 146 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:31,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 458 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:53:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-23 13:53:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-11-23 13:53:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 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) [2021-11-23 13:53:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-11-23 13:53:31,359 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-11-23 13:53:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:31,360 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-11-23 13:53:31,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) [2021-11-23 13:53:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-11-23 13:53:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:53:31,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:31,361 INFO L514 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, 1, 1, 1] [2021-11-23 13:53:31,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:31,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:31,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-11-23 13:53:31,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:31,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236798477] [2021-11-23 13:53:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:31,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:31,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:31,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:31,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:53:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:31,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 13:53:31,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:31,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:31,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236798477] [2021-11-23 13:53:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236798477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:31,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:31,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-23 13:53:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130445791] [2021-11-23 13:53:31,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:31,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:53:31,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:31,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:53:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:53:31,895 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2021-11-23 13:53:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:32,243 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-11-23 13:53:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:53:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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 25 [2021-11-23 13:53:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:32,245 INFO L225 Difference]: With dead ends: 114 [2021-11-23 13:53:32,245 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 13:53:32,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:53:32,247 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 71 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:32,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 411 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:53:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 13:53:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-23 13:53:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 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) [2021-11-23 13:53:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-11-23 13:53:32,257 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-11-23 13:53:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:32,257 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-11-23 13:53:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2021-11-23 13:53:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-11-23 13:53:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:53:32,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:32,259 INFO L514 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, 1, 1, 1] [2021-11-23 13:53:32,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:32,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:32,473 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-11-23 13:53:32,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:32,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840638066] [2021-11-23 13:53:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:32,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:32,475 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:32,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:53:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:32,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:32,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:32,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:32,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840638066] [2021-11-23 13:53:32,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840638066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:32,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:32,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-23 13:53:32,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209300243] [2021-11-23 13:53:32,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:32,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:53:32,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:53:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:53:32,781 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-11-23 13:53:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:32,980 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-11-23 13:53:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:53:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 25 [2021-11-23 13:53:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:32,981 INFO L225 Difference]: With dead ends: 84 [2021-11-23 13:53:32,981 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 13:53:32,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:53:32,982 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 72 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:32,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 405 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 13:53:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-23 13:53:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 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) [2021-11-23 13:53:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-11-23 13:53:32,988 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-11-23 13:53:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:32,988 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-11-23 13:53:32,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-11-23 13:53:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-11-23 13:53:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:53:32,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:32,990 INFO L514 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, 1, 1, 1, 1] [2021-11-23 13:53:33,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:33,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-11-23 13:53:33,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647717350] [2021-11-23 13:53:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:33,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:33,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:53:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:33,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:53:33,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:33,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:33,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:33,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647717350] [2021-11-23 13:53:33,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647717350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:33,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:33,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 13:53:33,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511012211] [2021-11-23 13:53:33,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:33,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:33,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:33,846 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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) [2021-11-23 13:53:34,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:34,087 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-11-23 13:53:34,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:53:34,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 26 [2021-11-23 13:53:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:34,089 INFO L225 Difference]: With dead ends: 82 [2021-11-23 13:53:34,089 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 13:53:34,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:34,090 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 134 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:34,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 236 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-11-23 13:53:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 13:53:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-23 13:53:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 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) [2021-11-23 13:53:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-11-23 13:53:34,107 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-11-23 13:53:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:34,107 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-11-23 13:53:34,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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) [2021-11-23 13:53:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-11-23 13:53:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:53:34,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:34,109 INFO L514 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, 1, 1, 1, 1] [2021-11-23 13:53:34,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:34,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,325 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-11-23 13:53:34,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249147129] [2021-11-23 13:53:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:34,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:34,327 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:34,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:53:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:34,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:35,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:35,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:35,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249147129] [2021-11-23 13:53:35,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249147129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:35,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:35,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-23 13:53:35,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704124914] [2021-11-23 13:53:35,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:35,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:53:35,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:53:35,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:53:35,453 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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) [2021-11-23 13:53:37,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:37,237 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-11-23 13:53:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 13:53:37,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 26 [2021-11-23 13:53:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:37,239 INFO L225 Difference]: With dead ends: 154 [2021-11-23 13:53:37,239 INFO L226 Difference]: Without dead ends: 134 [2021-11-23 13:53:37,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:53:37,240 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 273 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:37,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 327 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:53:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-23 13:53:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-11-23 13:53:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 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) [2021-11-23 13:53:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-11-23 13:53:37,249 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-11-23 13:53:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-11-23 13:53:37,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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) [2021-11-23 13:53:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-11-23 13:53:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:53:37,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:37,251 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-23 13:53:37,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:37,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:37,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-11-23 13:53:37,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:37,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546486035] [2021-11-23 13:53:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:37,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:37,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:37,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:53:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:37,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:53:37,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:37,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:38,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:38,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546486035] [2021-11-23 13:53:38,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546486035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:38,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:38,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-11-23 13:53:38,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430219851] [2021-11-23 13:53:38,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:38,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:53:38,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:38,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:53:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:38,239 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2021-11-23 13:53:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:40,207 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-11-23 13:53:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 13:53:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 27 [2021-11-23 13:53:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:40,208 INFO L225 Difference]: With dead ends: 195 [2021-11-23 13:53:40,208 INFO L226 Difference]: Without dead ends: 158 [2021-11-23 13:53:40,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 13:53:40,210 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 341 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:40,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 655 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:53:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-23 13:53:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-11-23 13:53:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-23 13:53:40,217 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-11-23 13:53:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:40,218 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-23 13:53:40,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2021-11-23 13:53:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-23 13:53:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:53:40,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:40,219 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:40,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:40,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,431 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-11-23 13:53:40,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:40,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494827754] [2021-11-23 13:53:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:40,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:40,433 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:40,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:53:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:53:40,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:40,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:41,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:41,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494827754] [2021-11-23 13:53:41,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494827754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:41,035 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:41,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-23 13:53:41,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196987869] [2021-11-23 13:53:41,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:41,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:53:41,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:53:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:53:41,037 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-11-23 13:53:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:41,895 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-11-23 13:53:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 13:53:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 28 [2021-11-23 13:53:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:41,896 INFO L225 Difference]: With dead ends: 125 [2021-11-23 13:53:41,896 INFO L226 Difference]: Without dead ends: 101 [2021-11-23 13:53:41,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-11-23 13:53:41,898 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 144 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:41,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 297 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:53:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-23 13:53:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-11-23 13:53:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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) [2021-11-23 13:53:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-11-23 13:53:41,904 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-11-23 13:53:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:41,904 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-11-23 13:53:41,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-11-23 13:53:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-11-23 13:53:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 13:53:41,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:41,905 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:41,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:42,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:42,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-11-23 13:53:42,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:42,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142997171] [2021-11-23 13:53:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:42,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:42,108 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:42,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:53:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:42,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:53:42,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:42,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:42,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142997171] [2021-11-23 13:53:42,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142997171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:42,718 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:42,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 13:53:42,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718766867] [2021-11-23 13:53:42,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:42,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:42,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:42,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:42,719 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-11-23 13:53:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:42,821 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-23 13:53:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-11-23 13:53:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:42,822 INFO L225 Difference]: With dead ends: 52 [2021-11-23 13:53:42,823 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 13:53:42,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:53:42,824 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 31 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:42,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 193 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2021-11-23 13:53:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 13:53:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-23 13:53:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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) [2021-11-23 13:53:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-23 13:53:42,830 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-11-23 13:53:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:42,830 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-23 13:53:42,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-11-23 13:53:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-23 13:53:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 13:53:42,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:42,831 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:42,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:43,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:43,040 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-11-23 13:53:43,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787485073] [2021-11-23 13:53:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:43,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:43,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:43,042 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:43,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:53:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:43,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:53:43,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:43,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:43,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:43,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787485073] [2021-11-23 13:53:43,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787485073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:43,506 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:43,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-23 13:53:43,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120527060] [2021-11-23 13:53:43,506 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:43,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:53:43,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:53:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:53:43,507 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-11-23 13:53:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:43,983 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-11-23 13:53:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:53:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 32 [2021-11-23 13:53:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:43,984 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:53:43,984 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 13:53:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-23 13:53:43,985 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 253 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:43,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 108 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:53:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 13:53:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-23 13:53:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 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) [2021-11-23 13:53:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-23 13:53:43,991 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-11-23 13:53:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:43,992 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-23 13:53:43,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) [2021-11-23 13:53:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-23 13:53:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 13:53:43,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:43,993 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:44,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:44,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:44,206 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-11-23 13:53:44,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:44,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884827384] [2021-11-23 13:53:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:44,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:44,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:44,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:44,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 13:53:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:44,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:53:44,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:45,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:45,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:45,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884827384] [2021-11-23 13:53:45,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884827384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:45,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:45,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 13:53:45,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398955] [2021-11-23 13:53:45,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:45,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:53:45,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:53:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:53:45,349 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-11-23 13:53:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:46,854 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-11-23 13:53:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:53:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 33 [2021-11-23 13:53:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:46,855 INFO L225 Difference]: With dead ends: 79 [2021-11-23 13:53:46,855 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 13:53:46,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-23 13:53:46,856 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 162 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:46,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 182 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 13:53:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 13:53:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-11-23 13:53:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-11-23 13:53:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-23 13:53:46,861 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-11-23 13:53:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:46,861 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-23 13:53:46,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-11-23 13:53:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-23 13:53:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 13:53:46,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:46,861 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:46,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:47,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:47,062 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-11-23 13:53:47,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:47,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52872205] [2021-11-23 13:53:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:47,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:47,064 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:47,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 13:53:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:47,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:47,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:47,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:47,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:47,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52872205] [2021-11-23 13:53:47,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52872205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:47,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:47,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:47,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213416617] [2021-11-23 13:53:47,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:47,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:47,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:47,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:47,235 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2021-11-23 13:53:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:47,274 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-23 13:53:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) Word has length 35 [2021-11-23 13:53:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:47,275 INFO L225 Difference]: With dead ends: 39 [2021-11-23 13:53:47,275 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:53:47,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:47,276 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:47,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:53:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:53:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:53:47,277 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) [2021-11-23 13:53:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:53:47,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-11-23 13:53:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:47,277 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:53:47,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2021-11-23 13:53:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:53:47,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:53:47,280 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 13:53:47,280 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 13:53:47,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:47,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:47,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-11-23 13:53:56,812 INFO L858 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L858 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-11-23 13:53:56,813 INFO L861 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-11-23 13:53:56,814 INFO L858 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-11-23 13:53:56,815 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-11-23 13:53:56,816 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse2 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse0 (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) (not .cse1) .cse2) (and (not .cse2) .cse0 (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)))) [2021-11-23 13:53:56,816 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-11-23 13:53:56,816 INFO L858 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-11-23 13:53:56,816 INFO L854 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~y#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse0 (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse1) (and (not .cse1) .cse0 (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)))) [2021-11-23 13:53:56,816 INFO L858 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-11-23 13:53:56,816 INFO L854 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse0 (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse1) (let ((.cse2 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|)))) (and (not .cse1) .cse0 (= .cse2 |ULTIMATE.start_fmin_float_~x#1|) (not (= |ULTIMATE.start___fpclassify_float_#res#1| (_ bv0 32))) (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|) (fp.eq .cse2 .cse2) (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|))))) [2021-11-23 13:53:56,817 INFO L854 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|))) (.cse1 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start___fpclassify_float_#res#1| (_ bv0 32)))) (or (and (not (fp.eq .cse0 .cse0)) (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse1 (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) .cse2 (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) (and (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~y#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse1 (not .cse2) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)))) [2021-11-23 13:53:56,817 INFO L854 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) (and (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) .cse0))) [2021-11-23 13:53:56,817 INFO L854 garLoopResultBuilder]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short13#1| (let ((.cse0 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)))) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2021-11-23 13:53:56,817 INFO L854 garLoopResultBuilder]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (not |ULTIMATE.start_main_#t~short17#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short13#1|))) (or (and (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) .cse0 .cse1 .cse2) (and (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (not .cse0) .cse1 .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)))) [2021-11-23 13:53:56,818 INFO L854 garLoopResultBuilder]: At program point L59-3(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16#1| (let ((.cse0 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)))) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short17#1|) (not |ULTIMATE.start_main_#t~short13#1|)) [2021-11-23 13:53:56,818 INFO L854 garLoopResultBuilder]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|))) (.cse1 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~y#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3) (and (not (fp.eq .cse0 .cse0)) (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse1 (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) .cse1 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2021-11-23 13:53:56,818 INFO L854 garLoopResultBuilder]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32))) (.cse2 (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)))) (or (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short21#1| .cse0 .cse1 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (= (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|)) |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~y#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) |ULTIMATE.start_main_#t~short21#1| (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2))) [2021-11-23 13:53:56,818 INFO L854 garLoopResultBuilder]: At program point L59-6(line 59) the Hoare annotation is: (or (and (not (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|)))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|))) [2021-11-23 13:53:56,818 INFO L854 garLoopResultBuilder]: At program point L59-7(line 59) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|)))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) [2021-11-23 13:53:56,819 INFO L858 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-11-23 13:53:56,819 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-11-23 13:53:56,819 INFO L858 garLoopResultBuilder]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-11-23 13:53:56,819 INFO L858 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-11-23 13:53:56,819 INFO L854 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___fpclassify_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___fpclassify_float_~w~0#1|))) (.cse1 (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)))) (or (and (not (fp.eq .cse0 .cse0)) (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) .cse1 (not (fp.eq |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start___fpclassify_float_~x#1|)) (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) (and (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) .cse1 (= |ULTIMATE.start_isnan_float_#res#1| (_ bv0 32)) .cse2 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start___fpclassify_float_~x#1| |ULTIMATE.start_fmin_float_~y#1|) (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) .cse1 .cse2))) [2021-11-23 13:53:56,823 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:56,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:53:56,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:53:56 BoogieIcfgContainer [2021-11-23 13:53:56,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:53:56,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:53:56,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:53:56,865 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:53:56,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:23" (3/4) ... [2021-11-23 13:53:56,880 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:53:56,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2021-11-23 13:53:56,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 13:53:56,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:53:56,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:53:56,915 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (\result == 0bv32 && ~fp.eq~FLOAT(x, x)) [2021-11-23 13:53:56,915 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((\result == 0bv32 && ~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(y, y) && 1bv32 == \result))) && !~fp.eq~FLOAT(x, x) [2021-11-23 13:53:56,915 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == 0bv32 && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) [2021-11-23 13:53:56,916 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((\result == 0bv32 && ~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(y, y) && 1bv32 == \result))) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux [2021-11-23 13:53:56,916 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || (((((!~fp.eq~FLOAT(y, y) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && x == x) && 1bv32 == \result) [2021-11-23 13:53:56,916 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || (((((((!~fp.eq~FLOAT(y, y) && y == y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == x) && !(\result == 0bv32)) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && x == x) && 1bv32 == \result) [2021-11-23 13:53:56,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) || ((((\result == y && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y))) || (((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) [2021-11-23 13:53:56,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == y && !~fp.eq~FLOAT(x, x)) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) [2021-11-23 13:53:56,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x))) || (((((\result == y && y == y) && res == y) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) [2021-11-23 13:53:56,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y && x == y) && !~fp.eq~FLOAT(x, x)) && y == y) && !(\result == 0bv32)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) [2021-11-23 13:53:56,918 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\result == y && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && \result == 0bv32) && res == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(res, y)) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) [2021-11-23 13:53:56,918 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-11-23 13:53:56,919 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result [2021-11-23 13:53:56,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:53:56,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:53:56,946 INFO L158 Benchmark]: Toolchain (without parser) took 34117.37ms. Allocated memory was 56.6MB in the beginning and 157.3MB in the end (delta: 100.7MB). Free memory was 35.0MB in the beginning and 126.0MB in the end (delta: -91.0MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,946 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:56,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.22ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.9MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.20ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,947 INFO L158 Benchmark]: Boogie Preprocessor took 66.44ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 35.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:53:56,948 INFO L158 Benchmark]: RCFGBuilder took 505.86ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 48.3MB in the end (delta: -13.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,948 INFO L158 Benchmark]: TraceAbstraction took 33011.63ms. Allocated memory was 69.2MB in the beginning and 157.3MB in the end (delta: 88.1MB). Free memory was 47.8MB in the beginning and 131.2MB in the end (delta: -83.4MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,949 INFO L158 Benchmark]: Witness Printer took 79.82ms. Allocated memory is still 157.3MB. Free memory was 131.2MB in the beginning and 126.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:53:56,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.22ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.9MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.20ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.44ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 35.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 505.86ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 48.3MB in the end (delta: -13.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 33011.63ms. Allocated memory was 69.2MB in the beginning and 157.3MB in the end (delta: 88.1MB). Free memory was 47.8MB in the beginning and 131.2MB in the end (delta: -83.4MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. * Witness Printer took 79.82ms. Allocated memory is still 157.3MB. Free memory was 131.2MB in the beginning and 126.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: 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, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 32.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2422 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2422 mSDsluCounter, 5823 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 4669 mSDsCounter, 236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1917 IncrementalHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 236 mSolverCounterUnsat, 1154 mSDtfsCounter, 1917 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1044 GetRequests, 775 SyntacticMatches, 6 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 625 HoareAnnotationTreeSize, 14 FomulaSimplifications, 38307 FormulaSimplificationTreeSizeReduction, 5.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 624289 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1475 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((x == y && !~fp.eq~FLOAT(x, x)) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (\result == 0bv32 && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((\result == y && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && \result == 0bv32) && res == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(res, y)) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((\result == 0bv32 && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) || ((((\result == y && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y))) || (((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(\result, y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y) && x == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x))) || (((((\result == y && y == y) && res == y) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || (((((!~fp.eq~FLOAT(y, y) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && x == x) && 1bv32 == \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && y == y) && \result == 0bv32) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || (((((((!~fp.eq~FLOAT(y, y) && y == y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == x) && !(\result == 0bv32)) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && x == x) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((\result == 0bv32 && ~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(y, y) && 1bv32 == \result))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && \result == 0bv32) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == y && x == y) && !~fp.eq~FLOAT(x, x)) && y == y) && !(\result == 0bv32)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((\result == 0bv32 && ~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(y, y) && 1bv32 == \result))) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux RESULT: Ultimate proved your program to be correct! [2021-11-23 13:53:57,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3428ec-298e-44b9-8d8d-e7e841dd4bbb/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE