./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:51:45,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:51:45,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:51:45,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:51:45,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:51:45,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:51:45,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:51:45,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:51:45,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:51:45,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:51:45,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:51:45,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:51:45,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:51:45,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:51:45,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:51:45,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:51:45,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:51:45,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:51:45,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:51:45,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:51:45,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:51:45,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:51:45,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:51:45,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:51:45,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:51:45,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:51:45,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:51:45,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:51:45,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:51:45,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:51:45,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:51:45,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:51:45,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:51:45,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:51:45,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:51:45,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:51:45,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:51:45,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:51:45,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:51:45,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:51:45,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:51:45,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-13 17:51:45,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:51:45,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:51:45,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:51:45,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:51:45,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:51:45,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:51:45,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:51:45,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:51:45,794 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:51:45,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:51:45,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:51:45,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:51:45,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:51:45,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:51:45,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:51:45,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:51:45,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:51:45,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:51:45,797 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 17:51:45,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:51:45,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:51:45,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:51:45,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:51:45,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:51:45,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:51:45,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:51:45,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:45,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:51:45,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:51:45,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:51:45,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:51:45,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:51:45,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:51:45,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:51:45,802 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_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f [2021-11-13 17:51:46,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:51:46,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:51:46,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:51:46,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:51:46,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:51:46,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-13 17:51:46,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/data/f5b850212/7fd128a93bf6412cad983355a74e7444/FLAGad817fd54 [2021-11-13 17:51:46,932 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:51:46,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-11-13 17:51:46,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/data/f5b850212/7fd128a93bf6412cad983355a74e7444/FLAGad817fd54 [2021-11-13 17:51:47,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/data/f5b850212/7fd128a93bf6412cad983355a74e7444 [2021-11-13 17:51:47,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:51:47,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:51:47,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:47,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:51:47,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:51:47,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4656de82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47, skipping insertion in model container [2021-11-13 17:51:47,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:51:47,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:51:47,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2021-11-13 17:51:47,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:47,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:51:47,749 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2021-11-13 17:51:47,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:51:47,865 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:51:47,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47 WrapperNode [2021-11-13 17:51:47,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:51:47,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:51:47,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:51:47,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:51:47,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:51:47,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:51:47,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:51:47,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:51:47,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:47,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:51:47,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:51:47,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:51:47,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:51:47,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (1/1) ... [2021-11-13 17:51:48,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:51:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:48,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:51:48,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:51:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:51:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:51:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-13 17:51:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-13 17:51:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:51:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:51:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:51:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:51:48,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:51:48,720 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:51:48,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:48 BoogieIcfgContainer [2021-11-13 17:51:48,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:51:48,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:51:48,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:51:48,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:51:48,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:51:47" (1/3) ... [2021-11-13 17:51:48,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21416f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:48, skipping insertion in model container [2021-11-13 17:51:48,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:51:47" (2/3) ... [2021-11-13 17:51:48,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21416f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:51:48, skipping insertion in model container [2021-11-13 17:51:48,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:51:48" (3/3) ... [2021-11-13 17:51:48,735 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-11-13 17:51:48,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:51:48,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-13 17:51:48,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:51:48,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:51:48,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-13 17:51:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 74 states have (on average 1.6756756756756757) internal successors, (124), 92 states have internal predecessors, (124), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 17:51:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:51:48,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:48,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:48,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1558059187, now seen corresponding path program 1 times [2021-11-13 17:51:48,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:48,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936611836] [2021-11-13 17:51:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:48,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:49,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936611836] [2021-11-13 17:51:49,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936611836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:49,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:49,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:51:49,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224945141] [2021-11-13 17:51:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:49,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:51:49,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:51:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:51:49,194 INFO L87 Difference]: Start difference. First operand has 102 states, 74 states have (on average 1.6756756756756757) internal successors, (124), 92 states have internal predecessors, (124), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:49,238 INFO L93 Difference]: Finished difference Result 199 states and 289 transitions. [2021-11-13 17:51:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:51:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 17:51:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:49,252 INFO L225 Difference]: With dead ends: 199 [2021-11-13 17:51:49,252 INFO L226 Difference]: Without dead ends: 72 [2021-11-13 17:51:49,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:51:49,263 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:49,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:51:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-13 17:51:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-13 17:51:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.5) internal successors, (75), 63 states have internal predecessors, (75), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-11-13 17:51:49,322 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 9 [2021-11-13 17:51:49,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:49,323 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-11-13 17:51:49,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-11-13 17:51:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:51:49,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:49,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:49,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:51:49,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1559000453, now seen corresponding path program 1 times [2021-11-13 17:51:49,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:49,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062919508] [2021-11-13 17:51:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:49,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:49,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062919508] [2021-11-13 17:51:49,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062919508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:49,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:49,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:51:49,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440502744] [2021-11-13 17:51:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:49,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:49,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:49,423 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:49,537 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2021-11-13 17:51:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 17:51:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:49,543 INFO L225 Difference]: With dead ends: 181 [2021-11-13 17:51:49,543 INFO L226 Difference]: Without dead ends: 112 [2021-11-13 17:51:49,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:49,547 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 56 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.08ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:49,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 230 Invalid, 41 Unknown, 0 Unchecked, 6.08ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 66.19ms Time] [2021-11-13 17:51:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-13 17:51:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2021-11-13 17:51:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.475) internal successors, (118), 93 states have internal predecessors, (118), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2021-11-13 17:51:49,572 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 9 [2021-11-13 17:51:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:49,573 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2021-11-13 17:51:49,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2021-11-13 17:51:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 17:51:49,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:49,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:49,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:51:49,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2128694526, now seen corresponding path program 1 times [2021-11-13 17:51:49,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:49,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934023575] [2021-11-13 17:51:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:49,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:49,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934023575] [2021-11-13 17:51:49,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934023575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:49,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:49,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:49,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699555481] [2021-11-13 17:51:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:49,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:49,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:49,672 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:49,811 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2021-11-13 17:51:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 17:51:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:49,815 INFO L225 Difference]: With dead ends: 122 [2021-11-13 17:51:49,815 INFO L226 Difference]: Without dead ends: 120 [2021-11-13 17:51:49,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:49,821 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 72 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.25ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:49,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 310 Invalid, 70 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 90.25ms Time] [2021-11-13 17:51:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-13 17:51:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2021-11-13 17:51:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.451219512195122) internal successors, (119), 95 states have internal predecessors, (119), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2021-11-13 17:51:49,843 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 13 [2021-11-13 17:51:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:49,843 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2021-11-13 17:51:49,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2021-11-13 17:51:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 17:51:49,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:49,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:49,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:51:49,847 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1565020765, now seen corresponding path program 1 times [2021-11-13 17:51:49,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:49,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686039067] [2021-11-13 17:51:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:49,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:49,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:49,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686039067] [2021-11-13 17:51:49,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686039067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:49,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:49,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:49,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107877343] [2021-11-13 17:51:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:49,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:49,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:49,974 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:50,149 INFO L93 Difference]: Finished difference Result 198 states and 239 transitions. [2021-11-13 17:51:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-13 17:51:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:50,155 INFO L225 Difference]: With dead ends: 198 [2021-11-13 17:51:50,156 INFO L226 Difference]: Without dead ends: 126 [2021-11-13 17:51:50,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:50,165 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 84 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.52ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:50,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 313 Invalid, 73 Unknown, 0 Unchecked, 11.52ms Time], IncrementalHoareTripleChecker [14 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 98.00ms Time] [2021-11-13 17:51:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-13 17:51:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-11-13 17:51:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 86 states have (on average 1.430232558139535) internal successors, (123), 99 states have internal predecessors, (123), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2021-11-13 17:51:50,202 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 14 [2021-11-13 17:51:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:50,202 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2021-11-13 17:51:50,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2021-11-13 17:51:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 17:51:50,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:50,205 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:50,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:51:50,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1313459023, now seen corresponding path program 1 times [2021-11-13 17:51:50,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:50,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573948469] [2021-11-13 17:51:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:50,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:50,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:50,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573948469] [2021-11-13 17:51:50,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573948469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:50,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:50,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196425784] [2021-11-13 17:51:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:50,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:50,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:50,377 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:50,521 INFO L93 Difference]: Finished difference Result 150 states and 185 transitions. [2021-11-13 17:51:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-13 17:51:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:50,527 INFO L225 Difference]: With dead ends: 150 [2021-11-13 17:51:50,529 INFO L226 Difference]: Without dead ends: 147 [2021-11-13 17:51:50,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:50,531 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 99 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:50,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 247 Invalid, 62 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 104.93ms Time] [2021-11-13 17:51:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-13 17:51:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-11-13 17:51:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.4299065420560748) internal successors, (153), 119 states have internal predecessors, (153), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2021-11-13 17:51:50,560 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 16 [2021-11-13 17:51:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:50,560 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2021-11-13 17:51:50,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2021-11-13 17:51:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:51:50,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:50,562 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:50,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:51:50,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1405311915, now seen corresponding path program 1 times [2021-11-13 17:51:50,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:50,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809911971] [2021-11-13 17:51:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:50,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:50,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:50,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809911971] [2021-11-13 17:51:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809911971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:50,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071063372] [2021-11-13 17:51:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:50,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:50,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:50,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:51:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:50,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:51:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:50,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:50,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071063372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:50,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:50,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-13 17:51:50,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771696980] [2021-11-13 17:51:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:50,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:50,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:50,871 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:50,916 INFO L93 Difference]: Finished difference Result 158 states and 198 transitions. [2021-11-13 17:51:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-13 17:51:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:50,919 INFO L225 Difference]: With dead ends: 158 [2021-11-13 17:51:50,919 INFO L226 Difference]: Without dead ends: 157 [2021-11-13 17:51:50,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:50,921 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:50,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 174 Invalid, 28 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 29.95ms Time] [2021-11-13 17:51:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-13 17:51:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 128. [2021-11-13 17:51:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 105 states have (on average 1.4190476190476191) internal successors, (149), 117 states have internal predecessors, (149), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 161 transitions. [2021-11-13 17:51:50,940 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 161 transitions. Word has length 15 [2021-11-13 17:51:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:50,941 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 161 transitions. [2021-11-13 17:51:50,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 161 transitions. [2021-11-13 17:51:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:51:50,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:50,943 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:51,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:51,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2062523992, now seen corresponding path program 1 times [2021-11-13 17:51:51,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:51,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555850532] [2021-11-13 17:51:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:51:51,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:51,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555850532] [2021-11-13 17:51:51,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555850532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:51:51,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41949370] [2021-11-13 17:51:51,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:51,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:51,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:51,251 INFO L87 Difference]: Start difference. First operand 128 states and 161 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,299 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2021-11-13 17:51:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:51:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,305 INFO L225 Difference]: With dead ends: 137 [2021-11-13 17:51:51,305 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 17:51:51,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:51:51,308 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 160 Invalid, 15 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 38.37ms Time] [2021-11-13 17:51:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 17:51:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2021-11-13 17:51:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 114 states have internal predecessors, (144), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2021-11-13 17:51:51,344 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 17 [2021-11-13 17:51:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:51,349 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2021-11-13 17:51:51,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2021-11-13 17:51:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 17:51:51,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:51,351 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:51:51,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1373713817, now seen corresponding path program 1 times [2021-11-13 17:51:51,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:51,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30540076] [2021-11-13 17:51:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:51:51,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:51,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30540076] [2021-11-13 17:51:51,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30540076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:51,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816505032] [2021-11-13 17:51:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:51,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:51,471 INFO L87 Difference]: Start difference. First operand 125 states and 156 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,560 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2021-11-13 17:51:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-13 17:51:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,573 INFO L225 Difference]: With dead ends: 145 [2021-11-13 17:51:51,573 INFO L226 Difference]: Without dead ends: 143 [2021-11-13 17:51:51,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:51,575 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 87 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 246 Invalid, 54 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 62.94ms Time] [2021-11-13 17:51:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-13 17:51:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2021-11-13 17:51:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 117 states have internal predecessors, (146), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2021-11-13 17:51:51,602 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 158 transitions. Word has length 18 [2021-11-13 17:51:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:51,603 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 158 transitions. [2021-11-13 17:51:51,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:51:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 158 transitions. [2021-11-13 17:51:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 17:51:51,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:51,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:51:51,611 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2062413909, now seen corresponding path program 1 times [2021-11-13 17:51:51,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:51,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021640388] [2021-11-13 17:51:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:51:51,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:51,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021640388] [2021-11-13 17:51:51,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021640388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:51:51,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450867282] [2021-11-13 17:51:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:51:51,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:51:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:51,668 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,723 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2021-11-13 17:51:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:51:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-13 17:51:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,730 INFO L225 Difference]: With dead ends: 157 [2021-11-13 17:51:51,731 INFO L226 Difference]: Without dead ends: 156 [2021-11-13 17:51:51,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:51:51,739 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 13 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 166 Invalid, 26 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 33.19ms Time] [2021-11-13 17:51:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-13 17:51:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2021-11-13 17:51:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 114 states have internal predecessors, (142), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 154 transitions. [2021-11-13 17:51:51,756 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 154 transitions. Word has length 19 [2021-11-13 17:51:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:51,756 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 154 transitions. [2021-11-13 17:51:51,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 154 transitions. [2021-11-13 17:51:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 17:51:51,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:51,758 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:51:51,759 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 473395197, now seen corresponding path program 1 times [2021-11-13 17:51:51,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:51,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982988387] [2021-11-13 17:51:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 17:51:51,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:51,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982988387] [2021-11-13 17:51:51,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982988387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:51,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:51,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:51,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105538568] [2021-11-13 17:51:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:51,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:51,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:51,836 INFO L87 Difference]: Start difference. First operand 125 states and 154 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:51,938 INFO L93 Difference]: Finished difference Result 139 states and 170 transitions. [2021-11-13 17:51:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:51,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-13 17:51:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:51,941 INFO L225 Difference]: With dead ends: 139 [2021-11-13 17:51:51,941 INFO L226 Difference]: Without dead ends: 137 [2021-11-13 17:51:51,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:51,943 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 93 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:51,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 243 Invalid, 53 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 75.10ms Time] [2021-11-13 17:51:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-13 17:51:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-11-13 17:51:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 108 states have internal predecessors, (134), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-11-13 17:51:51,957 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 23 [2021-11-13 17:51:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:51,959 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-11-13 17:51:51,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-11-13 17:51:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:51:51,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:51,962 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:51,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:51:51,963 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash 553700837, now seen corresponding path program 1 times [2021-11-13 17:51:51,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:51,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206888956] [2021-11-13 17:51:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:51,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 17:51:52,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:52,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206888956] [2021-11-13 17:51:52,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206888956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:52,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:52,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:51:52,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505103776] [2021-11-13 17:51:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:52,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:51:52,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:51:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:51:52,099 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:52,173 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2021-11-13 17:51:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:51:52,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-13 17:51:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:52,176 INFO L225 Difference]: With dead ends: 133 [2021-11-13 17:51:52,176 INFO L226 Difference]: Without dead ends: 131 [2021-11-13 17:51:52,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:51:52,177 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:52,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 243 Invalid, 49 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 48.42ms Time] [2021-11-13 17:51:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-13 17:51:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-11-13 17:51:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.34375) internal successors, (129), 103 states have internal predecessors, (129), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2021-11-13 17:51:52,194 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 25 [2021-11-13 17:51:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:52,194 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2021-11-13 17:51:52,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:51:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2021-11-13 17:51:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 17:51:52,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:52,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:52,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:51:52,198 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1677809465, now seen corresponding path program 1 times [2021-11-13 17:51:52,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:52,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916299860] [2021-11-13 17:51:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:52,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:51:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:51:52,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:52,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916299860] [2021-11-13 17:51:52,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916299860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:52,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982428876] [2021-11-13 17:51:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:52,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:52,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:52,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:51:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:52,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 17:51:52,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:51:52,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:51:52,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982428876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:51:52,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:51:52,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2021-11-13 17:51:52,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731676361] [2021-11-13 17:51:52,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:51:52,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 17:51:52,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 17:51:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:51:52,942 INFO L87 Difference]: Start difference. First operand 114 states and 141 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-13 17:51:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:53,398 INFO L93 Difference]: Finished difference Result 256 states and 318 transitions. [2021-11-13 17:51:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:51:53,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2021-11-13 17:51:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:53,402 INFO L225 Difference]: With dead ends: 256 [2021-11-13 17:51:53,403 INFO L226 Difference]: Without dead ends: 125 [2021-11-13 17:51:53,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:51:53,406 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.08ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.55ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:53,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 648 Invalid, 256 Unknown, 0 Unchecked, 6.08ms Time], IncrementalHoareTripleChecker [10 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 264.55ms Time] [2021-11-13 17:51:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-13 17:51:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 90. [2021-11-13 17:51:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 79 states have internal predecessors, (95), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2021-11-13 17:51:53,419 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 30 [2021-11-13 17:51:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:53,422 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2021-11-13 17:51:53,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-13 17:51:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2021-11-13 17:51:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 17:51:53,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:53,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:53,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:53,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:53,642 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -679764374, now seen corresponding path program 1 times [2021-11-13 17:51:53,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:53,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545816155] [2021-11-13 17:51:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:53,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:51:53,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:53,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545816155] [2021-11-13 17:51:53,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545816155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:53,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70520356] [2021-11-13 17:51:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:53,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:53,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:53,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:51:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:53,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 17:51:53,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 17:51:54,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:51:54,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70520356] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:51:54,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:51:54,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2021-11-13 17:51:54,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014541769] [2021-11-13 17:51:54,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:51:54,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:51:54,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:54,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:51:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:51:54,319 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:51:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:54,694 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2021-11-13 17:51:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:51:54,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 34 [2021-11-13 17:51:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:54,697 INFO L225 Difference]: With dead ends: 161 [2021-11-13 17:51:54,697 INFO L226 Difference]: Without dead ends: 125 [2021-11-13 17:51:54,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:51:54,700 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 149 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.28ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:54,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 473 Invalid, 197 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [18 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 180.28ms Time] [2021-11-13 17:51:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-13 17:51:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 90. [2021-11-13 17:51:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 79 states have internal predecessors, (93), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-11-13 17:51:54,714 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 34 [2021-11-13 17:51:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:54,715 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-11-13 17:51:54,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:51:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-11-13 17:51:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:51:54,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:54,717 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:54,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-13 17:51:54,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 17:51:54,944 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1244863414, now seen corresponding path program 1 times [2021-11-13 17:51:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392611083] [2021-11-13 17:51:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:54,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:51:55,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:55,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392611083] [2021-11-13 17:51:55,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392611083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:55,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:55,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:51:55,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470502972] [2021-11-13 17:51:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:55,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:55,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:51:55,041 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:55,116 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2021-11-13 17:51:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:51:55,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-11-13 17:51:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:55,119 INFO L225 Difference]: With dead ends: 137 [2021-11-13 17:51:55,120 INFO L226 Difference]: Without dead ends: 90 [2021-11-13 17:51:55,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:55,121 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:55,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 426 Invalid, 49 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 42.31ms Time] [2021-11-13 17:51:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-13 17:51:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-13 17:51:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 79 states have internal predecessors, (91), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-13 17:51:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-11-13 17:51:55,133 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 38 [2021-11-13 17:51:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:55,134 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-11-13 17:51:55,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-11-13 17:51:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-13 17:51:55,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:55,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:55,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 17:51:55,136 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -911747015, now seen corresponding path program 2 times [2021-11-13 17:51:55,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:55,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938705927] [2021-11-13 17:51:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:55,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 17:51:55,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:55,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938705927] [2021-11-13 17:51:55,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938705927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:55,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:55,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:51:55,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341327043] [2021-11-13 17:51:55,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:55,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:51:55,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:51:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:55,410 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:55,606 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2021-11-13 17:51:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:51:55,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-11-13 17:51:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:55,608 INFO L225 Difference]: With dead ends: 159 [2021-11-13 17:51:55,608 INFO L226 Difference]: Without dead ends: 157 [2021-11-13 17:51:55,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:51:55,610 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 99 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:55,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 675 Invalid, 120 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [15 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 134.03ms Time] [2021-11-13 17:51:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-13 17:51:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2021-11-13 17:51:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.2527472527472527) internal successors, (114), 98 states have internal predecessors, (114), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-13 17:51:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-11-13 17:51:55,622 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 42 [2021-11-13 17:51:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:55,622 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-11-13 17:51:55,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-11-13 17:51:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-13 17:51:55,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:55,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:55,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 17:51:55,624 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash -911687433, now seen corresponding path program 1 times [2021-11-13 17:51:55,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:55,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351830998] [2021-11-13 17:51:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:55,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 17:51:55,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:55,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351830998] [2021-11-13 17:51:55,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351830998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:55,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521475014] [2021-11-13 17:51:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:55,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:55,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:55,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:55,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:51:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:51:55,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 17:51:56,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 17:51:56,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521475014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:51:56,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:51:56,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-11-13 17:51:56,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847811025] [2021-11-13 17:51:56,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:51:56,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 17:51:56,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:56,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 17:51:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:51:56,540 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 17:51:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:56,791 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2021-11-13 17:51:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:51:56,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2021-11-13 17:51:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:56,794 INFO L225 Difference]: With dead ends: 198 [2021-11-13 17:51:56,794 INFO L226 Difference]: Without dead ends: 164 [2021-11-13 17:51:56,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:51:56,795 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 75 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:56,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 846 Invalid, 144 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 155.50ms Time] [2021-11-13 17:51:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-13 17:51:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2021-11-13 17:51:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 121 states have internal predecessors, (142), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-13 17:51:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2021-11-13 17:51:56,812 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 42 [2021-11-13 17:51:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:56,814 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2021-11-13 17:51:56,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 17:51:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2021-11-13 17:51:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 17:51:56,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:56,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:56,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:57,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 17:51:57,055 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1541169633, now seen corresponding path program 1 times [2021-11-13 17:51:57,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:57,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205562631] [2021-11-13 17:51:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:57,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 17:51:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:51:57,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:57,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205562631] [2021-11-13 17:51:57,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205562631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:57,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:57,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:51:57,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524054958] [2021-11-13 17:51:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:57,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:51:57,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:51:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:51:57,379 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:57,824 INFO L93 Difference]: Finished difference Result 183 states and 211 transitions. [2021-11-13 17:51:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:51:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-13 17:51:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:57,827 INFO L225 Difference]: With dead ends: 183 [2021-11-13 17:51:57,827 INFO L226 Difference]: Without dead ends: 182 [2021-11-13 17:51:57,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:51:57,829 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 119 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.72ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:57,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 662 Invalid, 151 Unknown, 0 Unchecked, 4.72ms Time], IncrementalHoareTripleChecker [18 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 264.98ms Time] [2021-11-13 17:51:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-13 17:51:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 133. [2021-11-13 17:51:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 118 states have internal predecessors, (138), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-13 17:51:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-11-13 17:51:57,847 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 44 [2021-11-13 17:51:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:57,848 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-11-13 17:51:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:51:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-11-13 17:51:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 17:51:57,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:57,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:57,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 17:51:57,850 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-13 17:51:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1634349713, now seen corresponding path program 1 times [2021-11-13 17:51:57,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:57,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399883167] [2021-11-13 17:51:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:57,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:57,912 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:51:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:51:57,973 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:51:57,975 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:51:57,976 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-11-13 17:51:57,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-11-13 17:51:57,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-11-13 17:51:57,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-11-13 17:51:57,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-11-13 17:51:57,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-11-13 17:51:57,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-11-13 17:51:57,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-11-13 17:51:57,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-11-13 17:51:57,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-11-13 17:51:57,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-11-13 17:51:57,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-11-13 17:51:57,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-11-13 17:51:57,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-11-13 17:51:57,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-11-13 17:51:57,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-11-13 17:51:57,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 17:51:57,990 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:51:57,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:51:58,034 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:51:58,046 INFO L158 Benchmark]: Toolchain (without parser) took 10771.92ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 54.5MB in the beginning and 50.4MB in the end (delta: 4.1MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:58,047 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:58,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.71ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 62.7MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:51:58,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.21ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:51:58,049 INFO L158 Benchmark]: Boogie Preprocessor took 40.73ms. Allocated memory is still 90.2MB. Free memory was 60.6MB in the beginning and 59.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:51:58,049 INFO L158 Benchmark]: RCFGBuilder took 741.09ms. Allocated memory is still 90.2MB. Free memory was 59.2MB in the beginning and 42.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 17:51:58,050 INFO L158 Benchmark]: TraceAbstraction took 9319.88ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 42.4MB in the beginning and 50.4MB in the end (delta: -8.1MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2021-11-13 17:51:58,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.71ms. Allocated memory is still 90.2MB. Free memory was 54.4MB in the beginning and 62.7MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.21ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.73ms. Allocated memory is still 90.2MB. Free memory was 60.6MB in the beginning and 59.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 741.09ms. Allocated memory is still 90.2MB. Free memory was 59.2MB in the beginning and 42.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9319.88ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 42.4MB in the beginning and 50.4MB in the end (delta: -8.1MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:51:58,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba32fe83-720e-40cf-8c16-be51eb1a8add/bin/uautomizer-YU5uOKAj3y/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null