./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/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_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC --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 8039b1e35b9e459b273890fa707790cd9b2d1812 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/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_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC --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 8039b1e35b9e459b273890fa707790cd9b2d1812 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:26:51,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:51,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:52,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:52,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:52,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:52,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:52,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:52,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:52,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:52,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:52,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:52,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:52,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:52,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:52,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:52,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:52,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:52,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:52,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:52,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:52,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:52,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:52,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:52,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:52,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:52,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:52,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:52,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:52,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:52,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:52,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:52,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:52,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:52,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:52,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:52,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:52,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:52,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:52,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:52,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:52,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:26:52,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:52,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:52,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:52,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:52,173 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:52,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:52,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:52,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:52,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:52,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:52,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:52,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:52,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:52,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:52,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:52,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:52,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:52,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:52,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:52,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:52,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:52,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:52,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:52,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:52,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:52,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:26:52,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:52,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:52,189 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-11 00:26:52,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:52,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:52,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:52,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:52,550 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:52,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 00:26:52,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/47280c6f8/f8d3c99937074241a25dab9248009b73/FLAGf2cb85c3e [2021-10-11 00:26:53,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:53,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 00:26:53,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/47280c6f8/f8d3c99937074241a25dab9248009b73/FLAGf2cb85c3e [2021-10-11 00:26:53,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/47280c6f8/f8d3c99937074241a25dab9248009b73 [2021-10-11 00:26:53,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:53,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:53,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:53,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:53,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:53,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce60cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53, skipping insertion in model container [2021-10-11 00:26:53,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:53,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:53,783 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 00:26:53,790 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 00:26:53,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:53,805 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:53,847 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 00:26:53,849 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 00:26:53,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:53,869 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:53,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53 WrapperNode [2021-10-11 00:26:53,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:53,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:53,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:53,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:53,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:53,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:53,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:53,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:53,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... [2021-10-11 00:26:53,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:53,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:53,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:53,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:53,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 00:26:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:54,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:26:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:26:54,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:54,505 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 00:26:54,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:54 BoogieIcfgContainer [2021-10-11 00:26:54,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:54,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:26:54,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:26:54,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:26:54,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:53" (1/3) ... [2021-10-11 00:26:54,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ae5fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:54, skipping insertion in model container [2021-10-11 00:26:54,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:53" (2/3) ... [2021-10-11 00:26:54,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ae5fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:54, skipping insertion in model container [2021-10-11 00:26:54,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:54" (3/3) ... [2021-10-11 00:26:54,518 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-11 00:26:54,535 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:26:54,539 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:26:54,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:26:54,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:26:54,580 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:26:54,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:26:54,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:54,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:54,581 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:26:54,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:54,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:26:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-10-11 00:26:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:26:54,605 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:54,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:54,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-11 00:26:54,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:54,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878794162] [2021-10-11 00:26:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:54,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878794162] [2021-10-11 00:26:54,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:54,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:54,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706381057] [2021-10-11 00:26:54,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:54,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:54,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:54,854 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2021-10-11 00:26:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:54,973 INFO L93 Difference]: Finished difference Result 90 states and 134 transitions. [2021-10-11 00:26:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:54,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 00:26:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:54,987 INFO L225 Difference]: With dead ends: 90 [2021-10-11 00:26:54,987 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 00:26:54,990 INFO L677 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 [2021-10-11 00:26:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 00:26:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-11 00:26:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:26:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-11 00:26:55,050 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2021-10-11 00:26:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:55,050 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-11 00:26:55,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-11 00:26:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:26:55,052 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:55,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:55,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:26:55,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-11 00:26:55,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:55,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720398464] [2021-10-11 00:26:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:55,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720398464] [2021-10-11 00:26:55,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:55,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:55,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723999476] [2021-10-11 00:26:55,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:55,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:55,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:55,150 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2021-10-11 00:26:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:55,205 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-11 00:26:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:55,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 00:26:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:55,208 INFO L225 Difference]: With dead ends: 77 [2021-10-11 00:26:55,208 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 00:26:55,209 INFO L677 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 [2021-10-11 00:26:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 00:26:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-10-11 00:26:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:26:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:26:55,228 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-11 00:26:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:55,230 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:26:55,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:26:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:26:55,233 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:55,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:55,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:26:55,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-10-11 00:26:55,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:55,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682487141] [2021-10-11 00:26:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:55,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682487141] [2021-10-11 00:26:55,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:55,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:55,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708294465] [2021-10-11 00:26:55,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:55,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:55,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:55,328 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 00:26:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:55,383 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 00:26:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:55,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:26:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:55,386 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:26:55,386 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 00:26:55,387 INFO L677 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 [2021-10-11 00:26:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 00:26:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 00:26:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:26:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:26:55,400 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-10-11 00:26:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:55,401 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:26:55,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:26:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:26:55,402 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:55,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:55,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:26:55,403 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:55,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-10-11 00:26:55,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:55,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430798713] [2021-10-11 00:26:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:55,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430798713] [2021-10-11 00:26:55,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:55,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:55,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245098959] [2021-10-11 00:26:55,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:55,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:55,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:55,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:55,549 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 00:26:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:55,613 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2021-10-11 00:26:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:55,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 00:26:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:55,621 INFO L225 Difference]: With dead ends: 81 [2021-10-11 00:26:55,623 INFO L226 Difference]: Without dead ends: 68 [2021-10-11 00:26:55,624 INFO L677 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 [2021-10-11 00:26:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-11 00:26:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2021-10-11 00:26:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:26:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:26:55,642 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-10-11 00:26:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:55,643 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:26:55,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:26:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:26:55,645 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:55,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:55,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:26:55,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-11 00:26:55,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:55,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609014597] [2021-10-11 00:26:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:55,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609014597] [2021-10-11 00:26:55,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:55,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:26:55,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10250023] [2021-10-11 00:26:55,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:26:55,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:55,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:26:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:26:55,708 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2021-10-11 00:26:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:55,725 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-10-11 00:26:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:26:55,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:26:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:55,727 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:26:55,727 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 00:26:55,728 INFO L677 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 [2021-10-11 00:26:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 00:26:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-11 00:26:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 00:26:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2021-10-11 00:26:55,736 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2021-10-11 00:26:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:55,736 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2021-10-11 00:26:55,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:26:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2021-10-11 00:26:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:26:55,738 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:55,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:55,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:26:55,739 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-11 00:26:55,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:55,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742725372] [2021-10-11 00:26:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:55,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:55,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:55,899 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:55,900 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:26:55,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:26:55,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:26:55 BoogieIcfgContainer [2021-10-11 00:26:55,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:26:55,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:55,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:55,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:55,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:54" (3/4) ... [2021-10-11 00:26:55,972 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:26:55,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:55,974 INFO L168 Benchmark]: Toolchain (without parser) took 2453.87 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 46.0 MB in the beginning and 89.7 MB in the end (delta: -43.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:55,977 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 79.7 MB. Free memory was 52.9 MB in the beginning and 52.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:55,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.77 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 45.9 MB in the beginning and 88.2 MB in the end (delta: -42.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:55,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.67 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 86.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:55,984 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 84.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:55,986 INFO L168 Benchmark]: RCFGBuilder took 517.90 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 60.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:55,990 INFO L168 Benchmark]: TraceAbstraction took 1451.73 ms. Allocated memory is still 113.2 MB. Free memory was 60.3 MB in the beginning and 89.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:55,990 INFO L168 Benchmark]: Witness Printer took 10.19 ms. Allocated memory is still 113.2 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:55,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 79.7 MB. Free memory was 52.9 MB in the beginning and 52.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.77 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 45.9 MB in the beginning and 88.2 MB in the end (delta: -42.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.67 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 86.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 84.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 517.90 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 60.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1451.73 ms. Allocated memory is still 113.2 MB. Free memory was 60.3 MB in the beginning and 89.7 MB in the end (delta: -29.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 10.19 ms. Allocated memory is still 113.2 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 343 SDtfs, 79 SDslu, 503 SDs, 0 SdLazy, 88 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 62 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, 1865 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:26:58,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:58,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:58,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:58,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:58,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:58,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:58,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:58,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:58,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:58,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:58,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:58,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:58,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:58,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:58,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:58,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:58,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:58,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:58,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:58,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:58,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:58,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:58,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:58,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:58,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:58,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:58,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:58,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:58,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:58,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:58,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:58,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:59,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:59,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:59,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:59,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:59,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:59,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:59,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:59,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:59,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:26:59,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:59,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:59,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:59,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:59,064 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:59,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:59,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:59,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:59,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:59,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:59,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:59,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:59,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:26:59,067 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:26:59,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:59,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:59,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:59,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:59,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:59,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:59,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:59,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:59,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:59,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:59,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:59,070 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:26:59,071 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:26:59,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:59,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:59,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:26:59,072 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-11 00:26:59,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:59,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:59,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:59,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:59,546 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:59,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 00:26:59,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/b93ceab17/3f38122ddbb74d929b3793e192b0d8c1/FLAGc76048cb3 [2021-10-11 00:27:00,326 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:00,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-11 00:27:00,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/b93ceab17/3f38122ddbb74d929b3793e192b0d8c1/FLAGc76048cb3 [2021-10-11 00:27:00,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/data/b93ceab17/3f38122ddbb74d929b3793e192b0d8c1 [2021-10-11 00:27:00,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:00,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:00,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:00,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:00,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:00,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:00" (1/1) ... [2021-10-11 00:27:00,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d33484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:00, skipping insertion in model container [2021-10-11 00:27:00,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:00" (1/1) ... [2021-10-11 00:27:00,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:00,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:00,893 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 00:27:00,898 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 00:27:00,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:00,926 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:00,986 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-11 00:27:00,994 WARN L226 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_ab565488-903e-4ab0-953b-9d8fdbfedb55/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-11 00:27:01,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:01,043 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:01,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01 WrapperNode [2021-10-11 00:27:01,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:01,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:01,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:01,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:01,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:01,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:01,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:01,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:01,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... [2021-10-11 00:27:01,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:01,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:01,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:01,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:01,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:27:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:27:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 00:27:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 00:27:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:27:01,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:01,953 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 00:27:01,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:01 BoogieIcfgContainer [2021-10-11 00:27:01,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:01,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:27:01,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:27:01,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:27:01,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:00" (1/3) ... [2021-10-11 00:27:01,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af60d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:01, skipping insertion in model container [2021-10-11 00:27:01,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:01" (2/3) ... [2021-10-11 00:27:01,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af60d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:01, skipping insertion in model container [2021-10-11 00:27:01,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:01" (3/3) ... [2021-10-11 00:27:01,966 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-11 00:27:01,984 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:27:01,989 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:27:02,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:27:02,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:27:02,034 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:27:02,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:27:02,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:02,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:02,035 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:27:02,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:02,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:27:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-10-11 00:27:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:27:02,059 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:02,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:02,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-11 00:27:02,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:02,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682215010] [2021-10-11 00:27:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:02,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:27:02,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:02,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:02,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682215010] [2021-10-11 00:27:02,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:02,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:02,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457574691] [2021-10-11 00:27:02,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:27:02,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:02,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:27:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:27:02,327 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2021-10-11 00:27:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:02,351 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-11 00:27:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:27:02,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 00:27:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:02,364 INFO L225 Difference]: With dead ends: 82 [2021-10-11 00:27:02,364 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 00:27:02,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:27:02,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 00:27:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-11 00:27:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 00:27:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-11 00:27:02,411 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-11 00:27:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:02,412 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-11 00:27:02,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:27:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-11 00:27:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:27:02,413 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:02,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:02,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:27:02,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:02,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-11 00:27:02,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:02,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703612330] [2021-10-11 00:27:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:02,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:02,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:02,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:02,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703612330] [2021-10-11 00:27:02,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:02,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:02,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852165916] [2021-10-11 00:27:02,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:02,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:02,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:02,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:02,812 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2021-10-11 00:27:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:02,898 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-11 00:27:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:02,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 00:27:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:02,901 INFO L225 Difference]: With dead ends: 82 [2021-10-11 00:27:02,901 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 00:27:02,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 00:27:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-11 00:27:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:27:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-11 00:27:02,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-11 00:27:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:02,914 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-11 00:27:02,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-11 00:27:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:27:02,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:02,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:03,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:27:03,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-11 00:27:03,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:03,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251971289] [2021-10-11 00:27:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:03,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:03,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:03,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:03,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251971289] [2021-10-11 00:27:03,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:03,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:03,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576667651] [2021-10-11 00:27:03,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:03,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:03,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:03,340 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2021-10-11 00:27:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:03,438 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-11 00:27:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:03,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 00:27:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:03,441 INFO L225 Difference]: With dead ends: 77 [2021-10-11 00:27:03,441 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 00:27:03,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 00:27:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-10-11 00:27:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:27:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:27:03,465 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-11 00:27:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:03,465 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:27:03,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:27:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:27:03,468 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:03,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:03,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 00:27:03,690 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:03,691 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-10-11 00:27:03,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:03,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588623484] [2021-10-11 00:27:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:03,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:03,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:03,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:03,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588623484] [2021-10-11 00:27:03,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:03,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:03,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513654800] [2021-10-11 00:27:03,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:03,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:03,849 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 00:27:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:03,948 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 00:27:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:03,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:27:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:03,953 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:27:03,953 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 00:27:03,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 00:27:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 00:27:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:27:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:27:03,971 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-10-11 00:27:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:03,972 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:27:03,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:27:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:27:03,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:03,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:04,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 00:27:04,191 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-10-11 00:27:04,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:04,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477950831] [2021-10-11 00:27:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:04,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:04,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:04,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477950831] [2021-10-11 00:27:04,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:04,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:04,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529307444] [2021-10-11 00:27:04,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:04,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:04,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:04,351 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2021-10-11 00:27:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:04,426 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-11 00:27:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:04,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-10-11 00:27:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:04,429 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:27:04,430 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 00:27:04,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 00:27:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-11 00:27:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:27:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-11 00:27:04,444 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-10-11 00:27:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:04,448 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-11 00:27:04,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-11 00:27:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:27:04,450 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:04,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:04,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 00:27:04,667 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:04,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-11 00:27:04,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:04,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583001491] [2021-10-11 00:27:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:04,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:04,862 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:04,863 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:04,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:04,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583001491] [2021-10-11 00:27:04,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:04,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:27:04,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329010355] [2021-10-11 00:27:05,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:27:05,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:05,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:27:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:05,004 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 7 states. [2021-10-11 00:27:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:05,485 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-11 00:27:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:27:05,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-10-11 00:27:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:05,488 INFO L225 Difference]: With dead ends: 149 [2021-10-11 00:27:05,488 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 00:27:05,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:27:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 00:27:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-11 00:27:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 00:27:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-11 00:27:05,501 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-11 00:27:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:05,501 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-11 00:27:05,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:27:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-11 00:27:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:27:05,503 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:05,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:05,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 00:27:05,718 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-11 00:27:05,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:05,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595779459] [2021-10-11 00:27:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:05,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:05,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:05,873 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:05,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:05,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:06,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:06,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595779459] [2021-10-11 00:27:06,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:06,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:27:06,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836952520] [2021-10-11 00:27:06,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:27:06,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:27:06,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:27:06,109 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 9 states. [2021-10-11 00:27:06,694 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2021-10-11 00:27:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:07,049 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-11 00:27:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:27:07,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-10-11 00:27:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:07,052 INFO L225 Difference]: With dead ends: 180 [2021-10-11 00:27:07,052 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 00:27:07,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:27:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 00:27:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-11 00:27:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 00:27:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-11 00:27:07,067 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-11 00:27:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:07,067 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-11 00:27:07,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:27:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-11 00:27:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:27:07,069 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:07,070 INFO L422 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] [2021-10-11 00:27:07,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 00:27:07,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-11 00:27:07,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:07,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510046842] [2021-10-11 00:27:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:07,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:07,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:07,438 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:07,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:07,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:07,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510046842] [2021-10-11 00:27:07,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:07,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:27:07,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665723928] [2021-10-11 00:27:07,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:27:07,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:27:07,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:07,520 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 7 states. [2021-10-11 00:27:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:08,050 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-11 00:27:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:27:08,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 00:27:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:08,052 INFO L225 Difference]: With dead ends: 166 [2021-10-11 00:27:08,052 INFO L226 Difference]: Without dead ends: 131 [2021-10-11 00:27:08,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:27:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-11 00:27:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-11 00:27:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 00:27:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-11 00:27:08,063 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-11 00:27:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:08,063 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-11 00:27:08,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:27:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-11 00:27:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:27:08,065 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:08,065 INFO L422 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] [2021-10-11 00:27:08,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 00:27:08,285 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-11 00:27:08,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:08,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047067739] [2021-10-11 00:27:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:08,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:08,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047067739] [2021-10-11 00:27:08,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:08,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:08,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046584342] [2021-10-11 00:27:08,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:08,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:08,413 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 4 states. [2021-10-11 00:27:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:08,470 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-10-11 00:27:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:08,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-10-11 00:27:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:08,471 INFO L225 Difference]: With dead ends: 133 [2021-10-11 00:27:08,471 INFO L226 Difference]: Without dead ends: 117 [2021-10-11 00:27:08,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-11 00:27:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2021-10-11 00:27:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 00:27:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 00:27:08,483 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 00:27:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:08,483 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 00:27:08,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 00:27:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:27:08,485 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:08,485 INFO L422 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] [2021-10-11 00:27:08,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 00:27:08,698 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-11 00:27:08,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:08,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143646651] [2021-10-11 00:27:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:08,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:27:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:08,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:08,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143646651] [2021-10-11 00:27:08,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:08,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:27:08,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288439427] [2021-10-11 00:27:08,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:27:08,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:08,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:27:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:08,796 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2021-10-11 00:27:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:08,816 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-11 00:27:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:27:08,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 00:27:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:08,819 INFO L225 Difference]: With dead ends: 96 [2021-10-11 00:27:08,819 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 00:27:08,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 00:27:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-11 00:27:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 00:27:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 00:27:08,828 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-11 00:27:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:08,829 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 00:27:08,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:27:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 00:27:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:27:08,830 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:08,830 INFO L422 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] [2021-10-11 00:27:09,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 00:27:09,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:09,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1838896133, now seen corresponding path program 1 times [2021-10-11 00:27:09,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:09,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056072403] [2021-10-11 00:27:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:09,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:09,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:09,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:09,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056072403] [2021-10-11 00:27:09,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:09,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:09,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254853976] [2021-10-11 00:27:09,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:09,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:09,163 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 4 states. [2021-10-11 00:27:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:09,245 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2021-10-11 00:27:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:09,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-10-11 00:27:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:09,247 INFO L225 Difference]: With dead ends: 139 [2021-10-11 00:27:09,247 INFO L226 Difference]: Without dead ends: 122 [2021-10-11 00:27:09,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-11 00:27:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 93. [2021-10-11 00:27:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 00:27:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-11 00:27:09,257 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 25 [2021-10-11 00:27:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:09,257 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-11 00:27:09,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-11 00:27:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:27:09,258 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:09,258 INFO L422 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] [2021-10-11 00:27:09,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 00:27:09,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:09,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:09,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-11 00:27:09,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:09,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602991464] [2021-10-11 00:27:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:09,577 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:09,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:09,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:09,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602991464] [2021-10-11 00:27:09,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:09,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:27:09,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664870435] [2021-10-11 00:27:09,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:27:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:27:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:09,657 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 7 states. [2021-10-11 00:27:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:09,926 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-11 00:27:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:27:09,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 00:27:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:09,928 INFO L225 Difference]: With dead ends: 131 [2021-10-11 00:27:09,928 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 00:27:09,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:27:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 00:27:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-11 00:27:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-10-11 00:27:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-11 00:27:09,936 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-11 00:27:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:09,936 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-11 00:27:09,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:27:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-11 00:27:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:27:09,937 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:09,937 INFO L422 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] [2021-10-11 00:27:10,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 00:27:10,153 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-11 00:27:10,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:10,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094983898] [2021-10-11 00:27:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:27:10,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:10,250 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:10,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:10,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:10,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094983898] [2021-10-11 00:27:10,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:10,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:27:10,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268599415] [2021-10-11 00:27:10,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:27:10,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:10,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:27:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:10,329 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 8 states. [2021-10-11 00:27:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:10,633 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-11 00:27:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:27:10,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-10-11 00:27:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:10,634 INFO L225 Difference]: With dead ends: 114 [2021-10-11 00:27:10,634 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 00:27:10,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:27:10,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 00:27:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-11 00:27:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 00:27:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-11 00:27:10,643 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-11 00:27:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:10,643 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-11 00:27:10,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:27:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-11 00:27:10,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:27:10,644 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:10,644 INFO L422 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] [2021-10-11 00:27:10,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 00:27:10,856 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:10,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-11 00:27:10,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:10,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218691693] [2021-10-11 00:27:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:10,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:10,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:10,954 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:10,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:11,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:11,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218691693] [2021-10-11 00:27:11,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:11,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:27:11,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099409979] [2021-10-11 00:27:11,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:27:11,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:11,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:27:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:11,028 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 7 states. [2021-10-11 00:27:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:11,257 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-11 00:27:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:27:11,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 00:27:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:11,258 INFO L225 Difference]: With dead ends: 84 [2021-10-11 00:27:11,258 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 00:27:11,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:27:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 00:27:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 00:27:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 00:27:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-11 00:27:11,265 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-11 00:27:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:11,266 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-11 00:27:11,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:27:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-11 00:27:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 00:27:11,266 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:11,267 INFO L422 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] [2021-10-11 00:27:11,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 00:27:11,479 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:11,479 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-11 00:27:11,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:11,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900572422] [2021-10-11 00:27:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:11,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:27:11,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:11,595 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:11,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:11,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:11,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900572422] [2021-10-11 00:27:11,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:11,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:27:11,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410647136] [2021-10-11 00:27:11,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:27:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:27:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:27:11,663 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 6 states. [2021-10-11 00:27:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:11,901 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-11 00:27:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:27:11,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-10-11 00:27:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:11,903 INFO L225 Difference]: With dead ends: 82 [2021-10-11 00:27:11,903 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 00:27:11,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:27:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 00:27:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 00:27:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 00:27:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-11 00:27:11,908 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-11 00:27:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:11,909 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-11 00:27:11,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:27:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-11 00:27:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 00:27:11,909 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:11,909 INFO L422 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] [2021-10-11 00:27:12,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 00:27:12,119 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-11 00:27:12,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:12,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066013336] [2021-10-11 00:27:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:27:12,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:12,424 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-10-11 00:27:12,429 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 00:27:12,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:12,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:12,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066013336] [2021-10-11 00:27:12,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:12,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:27:12,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491772608] [2021-10-11 00:27:12,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:27:12,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:12,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:27:12,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:27:12,533 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 9 states. [2021-10-11 00:27:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:13,217 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2021-10-11 00:27:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:27:13,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-10-11 00:27:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:13,219 INFO L225 Difference]: With dead ends: 120 [2021-10-11 00:27:13,219 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 00:27:13,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:27:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 00:27:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2021-10-11 00:27:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 00:27:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 00:27:13,226 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 00:27:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:13,226 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 00:27:13,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:27:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 00:27:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 00:27:13,226 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:13,227 INFO L422 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] [2021-10-11 00:27:13,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 00:27:13,427 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1994202826, now seen corresponding path program 1 times [2021-10-11 00:27:13,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:13,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633055331] [2021-10-11 00:27:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:13,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:13,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:13,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:13,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633055331] [2021-10-11 00:27:13,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:13,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:13,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780577346] [2021-10-11 00:27:13,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:13,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:13,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:13,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:13,532 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 4 states. [2021-10-11 00:27:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:13,579 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2021-10-11 00:27:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:13,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2021-10-11 00:27:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:13,580 INFO L225 Difference]: With dead ends: 120 [2021-10-11 00:27:13,581 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 00:27:13,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 00:27:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-10-11 00:27:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 00:27:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-10-11 00:27:13,589 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 26 [2021-10-11 00:27:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:13,589 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-10-11 00:27:13,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-10-11 00:27:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:27:13,590 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:13,590 INFO L422 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] [2021-10-11 00:27:13,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 00:27:13,804 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:13,804 INFO L82 PathProgramCache]: Analyzing trace with hash 548357897, now seen corresponding path program 1 times [2021-10-11 00:27:13,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:13,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652576114] [2021-10-11 00:27:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:13,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:27:13,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:13,906 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:13,906 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:13,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:14,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:14,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652576114] [2021-10-11 00:27:14,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:14,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 00:27:14,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632025465] [2021-10-11 00:27:14,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:27:14,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:14,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:27:14,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:27:14,096 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 10 states. [2021-10-11 00:27:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:14,944 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2021-10-11 00:27:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:27:14,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-10-11 00:27:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:14,945 INFO L225 Difference]: With dead ends: 81 [2021-10-11 00:27:14,945 INFO L226 Difference]: Without dead ends: 70 [2021-10-11 00:27:14,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:27:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-11 00:27:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-11 00:27:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 00:27:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-10-11 00:27:14,952 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 27 [2021-10-11 00:27:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:14,952 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-10-11 00:27:14,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:27:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-10-11 00:27:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:27:14,953 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:14,953 INFO L422 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] [2021-10-11 00:27:15,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2021-10-11 00:27:15,167 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2066405290, now seen corresponding path program 1 times [2021-10-11 00:27:15,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:15,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435812434] [2021-10-11 00:27:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:15,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:15,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:15,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:15,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435812434] [2021-10-11 00:27:15,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:15,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:15,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840916798] [2021-10-11 00:27:15,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:15,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:15,294 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 4 states. [2021-10-11 00:27:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:15,352 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-10-11 00:27:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:15,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-10-11 00:27:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:15,354 INFO L225 Difference]: With dead ends: 107 [2021-10-11 00:27:15,354 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 00:27:15,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 00:27:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-11 00:27:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 00:27:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-10-11 00:27:15,361 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 27 [2021-10-11 00:27:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:15,362 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-10-11 00:27:15,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-10-11 00:27:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:27:15,363 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:15,363 INFO L422 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] [2021-10-11 00:27:15,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2021-10-11 00:27:15,580 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-11 00:27:15,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:15,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315809757] [2021-10-11 00:27:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:15,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-11 00:27:15,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:15,686 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:15,687 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:15,708 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:16,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:16,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315809757] [2021-10-11 00:27:16,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:16,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 00:27:16,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083858704] [2021-10-11 00:27:16,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:27:16,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:16,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:27:16,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:27:16,024 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 12 states. [2021-10-11 00:27:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:18,055 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2021-10-11 00:27:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-11 00:27:18,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2021-10-11 00:27:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:18,057 INFO L225 Difference]: With dead ends: 193 [2021-10-11 00:27:18,057 INFO L226 Difference]: Without dead ends: 158 [2021-10-11 00:27:18,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 00:27:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-11 00:27:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-11 00:27:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 00:27:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-11 00:27:18,065 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-11 00:27:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:18,065 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-11 00:27:18,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:27:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-11 00:27:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 00:27:18,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:18,066 INFO L422 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] [2021-10-11 00:27:18,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2021-10-11 00:27:18,284 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-11 00:27:18,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:18,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572509311] [2021-10-11 00:27:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:18,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:27:18,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:18,386 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:18,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:18,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:18,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572509311] [2021-10-11 00:27:18,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:18,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 00:27:18,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862013650] [2021-10-11 00:27:18,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:27:18,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:18,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:27:18,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:27:18,635 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2021-10-11 00:27:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:19,484 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2021-10-11 00:27:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 00:27:19,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2021-10-11 00:27:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:19,486 INFO L225 Difference]: With dead ends: 135 [2021-10-11 00:27:19,486 INFO L226 Difference]: Without dead ends: 111 [2021-10-11 00:27:19,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-10-11 00:27:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-11 00:27:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 43. [2021-10-11 00:27:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 00:27:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-10-11 00:27:19,493 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 28 [2021-10-11 00:27:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:19,493 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-10-11 00:27:19,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:27:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-10-11 00:27:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 00:27:19,494 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:19,494 INFO L422 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] [2021-10-11 00:27:19,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2021-10-11 00:27:19,695 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1106626442, now seen corresponding path program 1 times [2021-10-11 00:27:19,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:19,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096782335] [2021-10-11 00:27:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:19,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:19,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:19,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096782335] [2021-10-11 00:27:19,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:19,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90583642] [2021-10-11 00:27:19,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:19,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:19,814 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2021-10-11 00:27:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:19,867 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-10-11 00:27:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:19,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-10-11 00:27:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:19,868 INFO L225 Difference]: With dead ends: 67 [2021-10-11 00:27:19,868 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 00:27:19,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 00:27:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-10-11 00:27:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 00:27:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-11 00:27:19,880 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-11 00:27:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:19,881 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-11 00:27:19,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-11 00:27:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:27:19,881 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:19,882 INFO L422 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] [2021-10-11 00:27:20,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2021-10-11 00:27:20,095 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:20,096 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-11 00:27:20,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:20,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794362824] [2021-10-11 00:27:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:20,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:27:20,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:20,214 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:20,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:20,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:20,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:20,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794362824] [2021-10-11 00:27:20,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:20,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:27:20,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078894254] [2021-10-11 00:27:20,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:27:20,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:20,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:27:20,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:27:20,283 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2021-10-11 00:27:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:20,506 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-11 00:27:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:27:20,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-10-11 00:27:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:20,508 INFO L225 Difference]: With dead ends: 52 [2021-10-11 00:27:20,508 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 00:27:20,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:27:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 00:27:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-11 00:27:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 00:27:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-11 00:27:20,513 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-11 00:27:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:20,513 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-11 00:27:20,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:27:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-11 00:27:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:27:20,514 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:20,514 INFO L422 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] [2021-10-11 00:27:20,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2021-10-11 00:27:20,714 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-11 00:27:20,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:20,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411406554] [2021-10-11 00:27:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:20,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:27:20,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:20,831 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:20,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:20,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:20,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:20,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411406554] [2021-10-11 00:27:20,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:20,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:27:20,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518782885] [2021-10-11 00:27:20,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:27:20,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:20,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:27:20,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:20,920 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2021-10-11 00:27:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:21,311 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-11 00:27:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:27:21,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-10-11 00:27:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:21,313 INFO L225 Difference]: With dead ends: 53 [2021-10-11 00:27:21,313 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 00:27:21,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:27:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 00:27:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 00:27:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:27:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-11 00:27:21,318 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-11 00:27:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:21,318 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-11 00:27:21,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:27:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-11 00:27:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:27:21,319 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:21,319 INFO L422 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] [2021-10-11 00:27:21,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2021-10-11 00:27:21,533 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-11 00:27:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:21,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271271229] [2021-10-11 00:27:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:21,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:27:21,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:21,679 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-10-11 00:27:21,679 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:21,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:21,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271271229] [2021-10-11 00:27:21,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:21,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:27:21,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544405375] [2021-10-11 00:27:21,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:27:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:21,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:27:21,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:21,776 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2021-10-11 00:27:22,327 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-10-11 00:27:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:22,401 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2021-10-11 00:27:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:27:22,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2021-10-11 00:27:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:22,402 INFO L225 Difference]: With dead ends: 71 [2021-10-11 00:27:22,402 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 00:27:22,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:27:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 00:27:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2021-10-11 00:27:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-10-11 00:27:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-10-11 00:27:22,409 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 33 [2021-10-11 00:27:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:22,409 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-10-11 00:27:22,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:27:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-10-11 00:27:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 00:27:22,410 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:22,410 INFO L422 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] [2021-10-11 00:27:22,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2021-10-11 00:27:22,619 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash -26785796, now seen corresponding path program 1 times [2021-10-11 00:27:22,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:22,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115004795] [2021-10-11 00:27:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:22,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:27:22,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:22,714 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-10-11 00:27:22,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:27:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:22,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:22,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115004795] [2021-10-11 00:27:22,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:22,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:27:22,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210572360] [2021-10-11 00:27:22,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:27:22,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:22,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:27:22,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:22,852 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2021-10-11 00:27:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:23,149 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-11 00:27:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:27:23,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2021-10-11 00:27:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:23,155 INFO L225 Difference]: With dead ends: 59 [2021-10-11 00:27:23,155 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 00:27:23,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:27:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 00:27:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-11 00:27:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:27:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-11 00:27:23,160 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-11 00:27:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:23,161 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-11 00:27:23,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:27:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-11 00:27:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 00:27:23,161 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:23,162 INFO L422 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] [2021-10-11 00:27:23,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2021-10-11 00:27:23,375 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-11 00:27:23,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:27:23,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199286021] [2021-10-11 00:27:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2021-10-11 00:27:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:23,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:23,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:23,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:27:23,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199286021] [2021-10-11 00:27:23,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:23,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:23,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490605447] [2021-10-11 00:27:23,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:23,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:27:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:23,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:23,493 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2021-10-11 00:27:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:23,517 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-11 00:27:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:23,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-10-11 00:27:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:23,518 INFO L225 Difference]: With dead ends: 39 [2021-10-11 00:27:23,518 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:27:23,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:27:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:27:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:27:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:27:23,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-11 00:27:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:23,519 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:23,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:27:23,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:27:23,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2021-10-11 00:27:23,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:27:24,043 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 112 [2021-10-11 00:27:24,155 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 68 [2021-10-11 00:27:24,262 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 63 [2021-10-11 00:27:24,413 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 51 [2021-10-11 00:27:24,658 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-10-11 00:27:27,614 WARN L197 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2021-10-11 00:27:27,854 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2021-10-11 00:27:28,024 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-10-11 00:27:28,224 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2021-10-11 00:27:28,384 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 16 [2021-10-11 00:27:28,880 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2021-10-11 00:27:29,027 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-10-11 00:27:29,420 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-11 00:27:29,486 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L265 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:27:29,487 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)) (and .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x)))) [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-11 00:27:29,488 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-11 00:27:29,489 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)))) [2021-10-11 00:27:29,489 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-11 00:27:29,489 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmin_float_~x .cse1) (let ((.cse2 (fp.eq .cse1 .cse1))) (or (and (not (= (bvadd ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483648 32)) (_ bv0 32))) (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse0 (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2139095039 32))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2147483649 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872255 32)))) (or (not (bvuge ULTIMATE.start___fpclassify_float_~w~0 (_ bv2155872256 32))) (not (bvule ULTIMATE.start___fpclassify_float_~w~0 (_ bv4286578687 32)))) .cse2) (and .cse0 (or (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse2))) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x))))) [2021-10-11 00:27:29,489 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse8 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse5 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (.cse6 (not .cse1)) (.cse7 (or (= (_ bv4 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) (.cse2 (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|) .cse2) (and .cse3 (or (and .cse4 .cse0 .cse5 .cse6 .cse7 .cse2) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse5 .cse6 .cse2)) .cse8) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_float_#res|) .cse4 .cse0 .cse3 .cse5 .cse8 .cse6 .cse2) (and .cse4 .cse0 (or (= ULTIMATE.start_fmin_float_~y (fp (_ bv0 1) (_ bv0 8) (_ bv0 23))) (= ULTIMATE.start_fmin_float_~y (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)))) .cse5 .cse6 .cse7 .cse2)))) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse2 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse2)))) [2021-10-11 00:27:29,490 INFO L258 CegarLoopResult]: At program point L59-5(line 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-11 00:27:29,491 INFO L258 CegarLoopResult]: At program point L59-6(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)) (and (not (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse1 .cse1))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))))) [2021-10-11 00:27:29,491 INFO L258 CegarLoopResult]: 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) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2021-10-11 00:27:29,491 INFO L262 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-11 00:27:29,491 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-11 00:27:29,491 INFO L262 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-10-11 00:27:29,491 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-11 00:27:29,491 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse4 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not .cse4))) (or (and .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (or (= (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0) (= (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)) ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_fmin_float_~y .cse3)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_main_~x~0 |ULTIMATE.start_fmin_float_#res|) .cse4 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2)))) [2021-10-11 00:27:29,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:29 BoogieIcfgContainer [2021-10-11 00:27:29,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:29,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:29,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:29,572 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:29,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:01" (3/4) ... [2021-10-11 00:27:29,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:27:29,588 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-11 00:27:29,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:27:29,589 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:27:29,590 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:27:29,615 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2021-10-11 00:27:29,615 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-11 00:27:29,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~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) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2021-10-11 00:27:29,616 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2021-10-11 00:27:29,617 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) [2021-10-11 00:27:29,617 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~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]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \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]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) [2021-10-11 00:27:29,617 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~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(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 00:27:29,618 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 00:27:29,618 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(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-11 00:27:29,618 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-11 00:27:29,619 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) [2021-10-11 00:27:29,619 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(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])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) [2021-10-11 00:27:29,620 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])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) [2021-10-11 00:27:29,645 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab565488-903e-4ab0-953b-9d8fdbfedb55/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:29,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:29,646 INFO L168 Benchmark]: Toolchain (without parser) took 28975.72 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 37.2 MB in the beginning and 62.2 MB in the end (delta: -25.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,647 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:29,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.67 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 41.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.31 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 39.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,648 INFO L168 Benchmark]: Boogie Preprocessor took 73.65 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 38.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,649 INFO L168 Benchmark]: RCFGBuilder took 735.56 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.2 MB in the beginning and 53.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,649 INFO L168 Benchmark]: TraceAbstraction took 27613.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.2 MB in the beginning and 67.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,649 INFO L168 Benchmark]: Witness Printer took 74.43 ms. Allocated memory is still 98.6 MB. Free memory was 67.4 MB in the beginning and 62.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.67 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 41.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.31 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 39.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.65 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 38.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 735.56 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.2 MB in the beginning and 53.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27613.64 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 53.2 MB in the beginning and 67.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * Witness Printer took 74.43 ms. Allocated memory is still 98.6 MB. Free memory was 67.4 MB in the beginning and 62.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((y == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) == y || ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23) == y)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((((!~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(x, x)) && y == y) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y))) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~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])) && y == y) && !~fp.eq~FLOAT(x, x)) && x == res) && x == x) && 1bv32 == \result) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(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])) && !~fp.eq~FLOAT(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((y == \result && y == res) && y == y) && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((!~fp.eq~FLOAT(x, x) && y == y) && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((0bv32 == \result && ((((((y == x && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((3bv32 == \result && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])))) && ~fp.eq~FLOAT(y, y))) || (((((((1bv32 == \result && y == x) && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) || ((((((y == x && y == y) && (y == ~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23) || y == ~fp~LONGDOUBLE(1bv1, 0bv8, 0bv23))) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && (4bv32 == \result || 2bv32 == \result)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - 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(x, x)) && y == y) && 0bv32 == \result) && x == res) && x == x) && x == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && (((((((!(~bvadd64(w, 2147483648bv32) == 0bv32) && 1bv32 == \result) && y == y) && !~bvule32(w, 2139095039bv32)) && (!~bvuge32(w, 2147483649bv32) || !~bvule32(w, 2155872255bv32))) && (!~bvuge32(w, 2155872256bv32) || !~bvule32(w, 4286578687bv32))) && ~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]))) || ((y == y && ((3bv32 == \result || 4bv32 == \result) || 2bv32 == \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]))))) && x == x) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~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) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.7s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1674 SDtfs, 1873 SDslu, 4718 SDs, 0 SdLazy, 1815 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=9, 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, 27 MinimizatonAttempts, 644 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 49 NumberOfFragments, 751 HoareAnnotationTreeSize, 14 FomulaSimplifications, 7528113 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38416 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 67978 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2360 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...