./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF --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 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:38:05,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:38:05,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:38:06,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:38:06,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:38:06,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:38:06,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:38:06,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:38:06,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:38:06,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:38:06,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:38:06,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:38:06,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:38:06,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:38:06,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:38:06,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:38:06,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:38:06,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:38:06,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:38:06,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:38:06,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:38:06,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:38:06,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:38:06,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:38:06,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:38:06,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:38:06,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:38:06,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:38:06,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:38:06,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:38:06,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:38:06,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:38:06,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:38:06,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:38:06,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:38:06,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:38:06,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:38:06,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:38:06,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:38:06,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:38:06,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:38:06,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 06:38:06,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:38:06,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:38:06,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:38:06,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:38:06,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:38:06,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:38:06,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:38:06,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:38:06,148 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:38:06,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:38:06,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:38:06,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:38:06,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:38:06,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:38:06,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:38:06,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:38:06,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:38:06,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:38:06,150 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 06:38:06,150 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:38:06,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:38:06,151 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:38:06,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:38:06,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:38:06,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:38:06,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:38:06,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:06,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:38:06,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:38:06,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:38:06,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:38:06,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:38:06,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:38:06,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:38:06,154 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_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2021-11-20 06:38:06,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:38:06,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:38:06,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:38:06,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:38:06,454 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:38:06,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-11-20 06:38:06,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/data/4552b0033/d63069ff5af14030962ee375a5bb754a/FLAG6bfcf0f86 [2021-11-20 06:38:07,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:38:07,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-11-20 06:38:07,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/data/4552b0033/d63069ff5af14030962ee375a5bb754a/FLAG6bfcf0f86 [2021-11-20 06:38:07,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/data/4552b0033/d63069ff5af14030962ee375a5bb754a [2021-11-20 06:38:07,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:38:07,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:38:07,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:07,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:38:07,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:38:07,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a9735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07, skipping insertion in model container [2021-11-20 06:38:07,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:38:07,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:38:07,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-11-20 06:38:07,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:07,631 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:38:07,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-11-20 06:38:07,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:07,685 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:38:07,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07 WrapperNode [2021-11-20 06:38:07,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:07,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:07,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:38:07,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:38:07,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,721 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-11-20 06:38:07,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:07,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:38:07,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:38:07,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:38:07,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:38:07,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:38:07,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:38:07,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:38:07,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (1/1) ... [2021-11-20 06:38:07,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:07,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:38:07,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:38:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:38:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:38:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 06:38:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 06:38:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:38:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:38:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-20 06:38:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-20 06:38:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:38:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:38:07,946 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:38:07,948 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:38:08,259 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:38:08,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:38:08,267 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:38:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:08 BoogieIcfgContainer [2021-11-20 06:38:08,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:38:08,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:38:08,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:38:08,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:38:08,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:38:07" (1/3) ... [2021-11-20 06:38:08,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27512cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:08, skipping insertion in model container [2021-11-20 06:38:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:07" (2/3) ... [2021-11-20 06:38:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27512cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:08, skipping insertion in model container [2021-11-20 06:38:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:08" (3/3) ... [2021-11-20 06:38:08,278 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2021-11-20 06:38:08,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:38:08,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 06:38:08,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:38:08,343 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 [2021-11-20 06:38:08,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 06:38:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 56 states have (on average 1.625) internal successors, (91), 72 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 06:38:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:38:08,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:08,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:08,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 915940719, now seen corresponding path program 1 times [2021-11-20 06:38:08,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:08,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642274883] [2021-11-20 06:38:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:08,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:08,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642274883] [2021-11-20 06:38:08,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642274883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:08,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:08,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:38:08,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241263515] [2021-11-20 06:38:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:08,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:38:08,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:38:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:38:08,620 INFO L87 Difference]: Start difference. First operand has 84 states, 56 states have (on average 1.625) internal successors, (91), 72 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-20 06:38:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:08,676 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2021-11-20 06:38:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:38:08,678 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 [2021-11-20 06:38:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:08,691 INFO L225 Difference]: With dead ends: 163 [2021-11-20 06:38:08,692 INFO L226 Difference]: Without dead ends: 72 [2021-11-20 06:38:08,699 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 [2021-11-20 06:38:08,704 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:08,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-20 06:38:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-20 06:38:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 62 states have internal predecessors, (73), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-11-20 06:38:08,772 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 9 [2021-11-20 06:38:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:08,773 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-11-20 06:38:08,773 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) [2021-11-20 06:38:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-11-20 06:38:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:38:08,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:08,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:08,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:38:08,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash 914999453, now seen corresponding path program 1 times [2021-11-20 06:38:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:08,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9741329] [2021-11-20 06:38:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:08,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:08,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:08,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9741329] [2021-11-20 06:38:08,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9741329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:08,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:38:08,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928912330] [2021-11-20 06:38:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:08,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:08,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:38:08,898 INFO L87 Difference]: Start difference. First operand 72 states and 86 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) [2021-11-20 06:38:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:08,976 INFO L93 Difference]: Finished difference Result 181 states and 223 transitions. [2021-11-20 06:38:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:08,977 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 [2021-11-20 06:38:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:08,980 INFO L225 Difference]: With dead ends: 181 [2021-11-20 06:38:08,980 INFO L226 Difference]: Without dead ends: 112 [2021-11-20 06:38:08,981 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 [2021-11-20 06:38:08,983 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:08,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 227 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:08,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-20 06:38:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2021-11-20 06:38:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.4871794871794872) internal successors, (116), 92 states have internal predecessors, (116), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2021-11-20 06:38:09,000 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 9 [2021-11-20 06:38:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:09,001 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2021-11-20 06:38:09,001 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) [2021-11-20 06:38:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2021-11-20 06:38:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:38:09,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:09,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:09,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:38:09,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash -718991324, now seen corresponding path program 1 times [2021-11-20 06:38:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:09,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410423046] [2021-11-20 06:38:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:09,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:09,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410423046] [2021-11-20 06:38:09,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410423046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:09,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:09,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:09,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190926131] [2021-11-20 06:38:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:09,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:09,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:09,077 INFO L87 Difference]: Start difference. First operand 103 states and 129 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) [2021-11-20 06:38:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:09,229 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2021-11-20 06:38:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:09,234 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 [2021-11-20 06:38:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:09,235 INFO L225 Difference]: With dead ends: 122 [2021-11-20 06:38:09,236 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 06:38:09,236 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 [2021-11-20 06:38:09,238 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:09,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 06:38:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2021-11-20 06:38:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.4625) internal successors, (117), 94 states have internal predecessors, (117), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2021-11-20 06:38:09,263 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 13 [2021-11-20 06:38:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:09,263 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2021-11-20 06:38:09,264 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) [2021-11-20 06:38:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2021-11-20 06:38:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:38:09,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:09,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:09,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:38:09,266 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -813894463, now seen corresponding path program 1 times [2021-11-20 06:38:09,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719847596] [2021-11-20 06:38:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:09,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:09,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719847596] [2021-11-20 06:38:09,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719847596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:09,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:09,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:09,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965307437] [2021-11-20 06:38:09,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:09,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:09,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:09,369 INFO L87 Difference]: Start difference. First operand 105 states and 130 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) [2021-11-20 06:38:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:09,485 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2021-11-20 06:38:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:09,486 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 [2021-11-20 06:38:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:09,489 INFO L225 Difference]: With dead ends: 198 [2021-11-20 06:38:09,490 INFO L226 Difference]: Without dead ends: 126 [2021-11-20 06:38:09,491 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 [2021-11-20 06:38:09,502 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 94 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:09,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 246 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-20 06:38:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-11-20 06:38:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 98 states have internal predecessors, (121), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-11-20 06:38:09,520 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 14 [2021-11-20 06:38:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:09,520 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-11-20 06:38:09,521 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) [2021-11-20 06:38:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-11-20 06:38:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:38:09,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:09,523 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:09,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:38:09,524 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash -459560941, now seen corresponding path program 1 times [2021-11-20 06:38:09,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:09,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573601313] [2021-11-20 06:38:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:09,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:09,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573601313] [2021-11-20 06:38:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573601313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:09,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:09,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:09,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960033155] [2021-11-20 06:38:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:09,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:09,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:09,635 INFO L87 Difference]: Start difference. First operand 109 states and 134 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) [2021-11-20 06:38:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:09,712 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2021-11-20 06:38:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:09,713 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 [2021-11-20 06:38:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:09,715 INFO L225 Difference]: With dead ends: 150 [2021-11-20 06:38:09,715 INFO L226 Difference]: Without dead ends: 147 [2021-11-20 06:38:09,716 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 [2021-11-20 06:38:09,723 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 63 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:09,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 281 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-20 06:38:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-11-20 06:38:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 105 states have (on average 1.438095238095238) internal successors, (151), 118 states have internal predecessors, (151), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 164 transitions. [2021-11-20 06:38:09,745 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 164 transitions. Word has length 16 [2021-11-20 06:38:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:09,752 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 164 transitions. [2021-11-20 06:38:09,752 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) [2021-11-20 06:38:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 164 transitions. [2021-11-20 06:38:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:38:09,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:09,758 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:09,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:38:09,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1079576499, now seen corresponding path program 1 times [2021-11-20 06:38:09,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102442788] [2021-11-20 06:38:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:09,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:09,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:09,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102442788] [2021-11-20 06:38:09,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102442788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:09,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641309936] [2021-11-20 06:38:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:09,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:09,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:09,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:09,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:38:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:09,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:38:09,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:09,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:38:09,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641309936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:09,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:38:09,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 06:38:09,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655514211] [2021-11-20 06:38:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:09,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:09,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:38:09,968 INFO L87 Difference]: Start difference. First operand 130 states and 164 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) [2021-11-20 06:38:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,026 INFO L93 Difference]: Finished difference Result 158 states and 197 transitions. [2021-11-20 06:38:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:10,027 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 [2021-11-20 06:38:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,029 INFO L225 Difference]: With dead ends: 158 [2021-11-20 06:38:10,030 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 06:38:10,031 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 [2021-11-20 06:38:10,034 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 10 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 245 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 06:38:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 128. [2021-11-20 06:38:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 116 states have internal predecessors, (147), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2021-11-20 06:38:10,063 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 15 [2021-11-20 06:38:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,064 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2021-11-20 06:38:10,064 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) [2021-11-20 06:38:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2021-11-20 06:38:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:38:10,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,071 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:10,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:10,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 06:38:10,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1361487226, now seen corresponding path program 1 times [2021-11-20 06:38:10,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427283567] [2021-11-20 06:38:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:38:10,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427283567] [2021-11-20 06:38:10,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427283567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:10,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:10,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:38:10,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217106426] [2021-11-20 06:38:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:10,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:38:10,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:38:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:10,302 INFO L87 Difference]: Start difference. First operand 128 states and 160 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) [2021-11-20 06:38:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,325 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2021-11-20 06:38:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:38:10,326 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 [2021-11-20 06:38:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,327 INFO L225 Difference]: With dead ends: 137 [2021-11-20 06:38:10,328 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 06:38:10,328 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 [2021-11-20 06:38:10,329 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 158 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 06:38:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2021-11-20 06:38:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 113 states have internal predecessors, (142), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 155 transitions. [2021-11-20 06:38:10,337 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 155 transitions. Word has length 17 [2021-11-20 06:38:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,338 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 155 transitions. [2021-11-20 06:38:10,338 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) [2021-11-20 06:38:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 155 transitions. [2021-11-20 06:38:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:38:10,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,339 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:10,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:38:10,340 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1631017083, now seen corresponding path program 1 times [2021-11-20 06:38:10,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270898063] [2021-11-20 06:38:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:10,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:10,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270898063] [2021-11-20 06:38:10,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270898063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:10,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:10,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467196093] [2021-11-20 06:38:10,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:10,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:10,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:10,433 INFO L87 Difference]: Start difference. First operand 125 states and 155 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) [2021-11-20 06:38:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,499 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2021-11-20 06:38:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:10,499 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 [2021-11-20 06:38:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,500 INFO L225 Difference]: With dead ends: 145 [2021-11-20 06:38:10,501 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 06:38:10,501 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 [2021-11-20 06:38:10,502 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 51 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 06:38:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2021-11-20 06:38:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 116 states have internal predecessors, (144), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 157 transitions. [2021-11-20 06:38:10,510 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 157 transitions. Word has length 18 [2021-11-20 06:38:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 157 transitions. [2021-11-20 06:38:10,510 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) [2021-11-20 06:38:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 157 transitions. [2021-11-20 06:38:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:38:10,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,511 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:10,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:38:10,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash -424506547, now seen corresponding path program 1 times [2021-11-20 06:38:10,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817299957] [2021-11-20 06:38:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:38:10,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:10,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817299957] [2021-11-20 06:38:10,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817299957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:10,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:10,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:38:10,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181199567] [2021-11-20 06:38:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:10,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:10,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:38:10,576 INFO L87 Difference]: Start difference. First operand 128 states and 157 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) [2021-11-20 06:38:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,628 INFO L93 Difference]: Finished difference Result 157 states and 189 transitions. [2021-11-20 06:38:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:10,628 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 [2021-11-20 06:38:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,630 INFO L225 Difference]: With dead ends: 157 [2021-11-20 06:38:10,630 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 06:38:10,630 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 [2021-11-20 06:38:10,631 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 234 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 06:38:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2021-11-20 06:38:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.386138613861386) internal successors, (140), 113 states have internal predecessors, (140), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2021-11-20 06:38:10,639 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 19 [2021-11-20 06:38:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,639 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-11-20 06:38:10,640 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) [2021-11-20 06:38:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2021-11-20 06:38:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:38:10,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,641 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:10,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:38:10,641 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -614250977, now seen corresponding path program 1 times [2021-11-20 06:38:10,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903439360] [2021-11-20 06:38:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:38:10,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:10,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903439360] [2021-11-20 06:38:10,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903439360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:10,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:10,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:10,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011981762] [2021-11-20 06:38:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:10,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:10,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:10,712 INFO L87 Difference]: Start difference. First operand 125 states and 153 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) [2021-11-20 06:38:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,773 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2021-11-20 06:38:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:10,773 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 [2021-11-20 06:38:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,781 INFO L225 Difference]: With dead ends: 139 [2021-11-20 06:38:10,781 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 06:38:10,782 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 [2021-11-20 06:38:10,783 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 277 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 06:38:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-11-20 06:38:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 107 states have internal predecessors, (132), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-11-20 06:38:10,802 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 23 [2021-11-20 06:38:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,802 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-11-20 06:38:10,803 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) [2021-11-20 06:38:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-11-20 06:38:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:38:10,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,804 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] [2021-11-20 06:38:10,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:38:10,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash -997219449, now seen corresponding path program 1 times [2021-11-20 06:38:10,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906209482] [2021-11-20 06:38:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:38:10,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:10,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906209482] [2021-11-20 06:38:10,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906209482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:10,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:10,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:10,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635565996] [2021-11-20 06:38:10,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:10,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:10,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:10,872 INFO L87 Difference]: Start difference. First operand 119 states and 145 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) [2021-11-20 06:38:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:10,953 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2021-11-20 06:38:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:10,955 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 [2021-11-20 06:38:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:10,956 INFO L225 Difference]: With dead ends: 133 [2021-11-20 06:38:10,956 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 06:38:10,956 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 [2021-11-20 06:38:10,957 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:10,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 277 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 06:38:10,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-11-20 06:38:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.351063829787234) internal successors, (127), 102 states have internal predecessors, (127), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 06:38:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2021-11-20 06:38:10,966 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 25 [2021-11-20 06:38:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:10,967 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2021-11-20 06:38:10,967 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) [2021-11-20 06:38:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2021-11-20 06:38:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:38:10,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:10,970 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] [2021-11-20 06:38:10,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:38:10,971 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1249154163, now seen corresponding path program 1 times [2021-11-20 06:38:10,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268655963] [2021-11-20 06:38:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:10,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:11,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:11,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:11,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268655963] [2021-11-20 06:38:11,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268655963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:11,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362915769] [2021-11-20 06:38:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:11,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:11,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:11,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:38:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:11,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:38:11,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:38:11,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:11,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362915769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:11,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:38:11,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2021-11-20 06:38:11,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955844654] [2021-11-20 06:38:11,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:11,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:38:11,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:38:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:38:11,591 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 06:38:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:11,990 INFO L93 Difference]: Finished difference Result 262 states and 321 transitions. [2021-11-20 06:38:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:38:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 29 [2021-11-20 06:38:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:11,993 INFO L225 Difference]: With dead ends: 262 [2021-11-20 06:38:11,993 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 06:38:11,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:38:11,994 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 60 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:11,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 799 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 06:38:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 103. [2021-11-20 06:38:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 88 states have internal predecessors, (105), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 06:38:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2021-11-20 06:38:12,006 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 29 [2021-11-20 06:38:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:12,006 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2021-11-20 06:38:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 06:38:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2021-11-20 06:38:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:38:12,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:12,007 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] [2021-11-20 06:38:12,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:12,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:12,222 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1266015036, now seen corresponding path program 1 times [2021-11-20 06:38:12,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:12,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985385271] [2021-11-20 06:38:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:12,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:38:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:12,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985385271] [2021-11-20 06:38:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985385271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:12,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:38:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128675082] [2021-11-20 06:38:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:38:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:38:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:38:12,419 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:12,494 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-11-20 06:38:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:38:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-20 06:38:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:12,496 INFO L225 Difference]: With dead ends: 166 [2021-11-20 06:38:12,496 INFO L226 Difference]: Without dead ends: 124 [2021-11-20 06:38:12,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:38:12,499 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 12 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:12,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 583 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-20 06:38:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 114. [2021-11-20 06:38:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 97 states have internal predecessors, (113), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-20 06:38:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2021-11-20 06:38:12,517 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 33 [2021-11-20 06:38:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:12,518 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2021-11-20 06:38:12,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2021-11-20 06:38:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:38:12,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:12,521 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-20 06:38:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:38:12,522 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 700268352, now seen corresponding path program 1 times [2021-11-20 06:38:12,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:12,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665145012] [2021-11-20 06:38:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:38:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:12,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665145012] [2021-11-20 06:38:12,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665145012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:12,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:12,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:38:12,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266461305] [2021-11-20 06:38:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:12,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:38:12,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:38:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:38:12,671 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:38:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:12,800 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2021-11-20 06:38:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:38:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2021-11-20 06:38:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:12,802 INFO L225 Difference]: With dead ends: 184 [2021-11-20 06:38:12,802 INFO L226 Difference]: Without dead ends: 144 [2021-11-20 06:38:12,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:38:12,803 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 71 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:12,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 623 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-20 06:38:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2021-11-20 06:38:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.308411214953271) internal successors, (140), 116 states have internal predecessors, (140), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-20 06:38:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2021-11-20 06:38:12,815 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 37 [2021-11-20 06:38:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:12,815 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-11-20 06:38:12,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:38:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2021-11-20 06:38:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:38:12,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:12,817 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] [2021-11-20 06:38:12,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:38:12,817 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1158132499, now seen corresponding path program 2 times [2021-11-20 06:38:12,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:12,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307696811] [2021-11-20 06:38:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:12,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:38:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:38:13,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307696811] [2021-11-20 06:38:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307696811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:13,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:38:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123305355] [2021-11-20 06:38:13,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:38:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:38:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:38:13,003 INFO L87 Difference]: Start difference. First operand 137 states and 167 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:13,183 INFO L93 Difference]: Finished difference Result 257 states and 310 transitions. [2021-11-20 06:38:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:38:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-11-20 06:38:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:13,185 INFO L225 Difference]: With dead ends: 257 [2021-11-20 06:38:13,186 INFO L226 Difference]: Without dead ends: 215 [2021-11-20 06:38:13,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:38:13,190 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 152 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:13,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1007 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-20 06:38:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2021-11-20 06:38:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.323943661971831) internal successors, (188), 152 states have internal predecessors, (188), 17 states have call successors, (17), 10 states have call predecessors, (17), 12 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2021-11-20 06:38:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2021-11-20 06:38:13,219 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 37 [2021-11-20 06:38:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2021-11-20 06:38:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2021-11-20 06:38:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 06:38:13,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:13,223 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] [2021-11-20 06:38:13,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:38:13,225 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1158072917, now seen corresponding path program 1 times [2021-11-20 06:38:13,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:13,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522082868] [2021-11-20 06:38:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:13,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:38:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:38:13,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:13,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522082868] [2021-11-20 06:38:13,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522082868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:13,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030364794] [2021-11-20 06:38:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:13,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:13,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:13,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:13,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:38:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:13,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:38:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:38:13,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:38:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030364794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:13,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:38:13,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2021-11-20 06:38:13,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780068472] [2021-11-20 06:38:13,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:38:13,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:38:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:38:13,940 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:38:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:14,239 INFO L93 Difference]: Finished difference Result 337 states and 426 transitions. [2021-11-20 06:38:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:38:14,240 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-11-20 06:38:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:14,242 INFO L225 Difference]: With dead ends: 337 [2021-11-20 06:38:14,243 INFO L226 Difference]: Without dead ends: 277 [2021-11-20 06:38:14,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:38:14,244 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 162 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:14,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1218 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-20 06:38:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2021-11-20 06:38:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 200 states have internal predecessors, (255), 24 states have call successors, (24), 12 states have call predecessors, (24), 15 states have return successors, (30), 23 states have call predecessors, (30), 22 states have call successors, (30) [2021-11-20 06:38:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 309 transitions. [2021-11-20 06:38:14,277 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 309 transitions. Word has length 37 [2021-11-20 06:38:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:14,279 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 309 transitions. [2021-11-20 06:38:14,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:38:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 309 transitions. [2021-11-20 06:38:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:38:14,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:14,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 06:38:14,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:14,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:38:14,506 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:14,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:14,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1294716000, now seen corresponding path program 1 times [2021-11-20 06:38:14,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:14,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065888564] [2021-11-20 06:38:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:14,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:38:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:14,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:14,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065888564] [2021-11-20 06:38:14,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065888564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745521116] [2021-11-20 06:38:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:14,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:14,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:14,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:14,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:38:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:38:14,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:38:14,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:38:14,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745521116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:14,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:38:14,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2021-11-20 06:38:14,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044641310] [2021-11-20 06:38:14,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:14,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:38:14,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:38:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:38:14,975 INFO L87 Difference]: Start difference. First operand 236 states and 309 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:38:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:15,246 INFO L93 Difference]: Finished difference Result 350 states and 450 transitions. [2021-11-20 06:38:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:38:15,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2021-11-20 06:38:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:15,249 INFO L225 Difference]: With dead ends: 350 [2021-11-20 06:38:15,249 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 06:38:15,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:38:15,250 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:15,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 853 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 06:38:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 215. [2021-11-20 06:38:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 174 states have (on average 1.3620689655172413) internal successors, (237), 184 states have internal predecessors, (237), 21 states have call successors, (21), 10 states have call predecessors, (21), 12 states have return successors, (24), 20 states have call predecessors, (24), 19 states have call successors, (24) [2021-11-20 06:38:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2021-11-20 06:38:15,268 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 39 [2021-11-20 06:38:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:15,269 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2021-11-20 06:38:15,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:38:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2021-11-20 06:38:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:38:15,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:15,270 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] [2021-11-20 06:38:15,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:15,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:38:15,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash -838128895, now seen corresponding path program 1 times [2021-11-20 06:38:15,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:15,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079043960] [2021-11-20 06:38:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:15,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:38:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:38:15,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:15,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079043960] [2021-11-20 06:38:15,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079043960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:15,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:15,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:38:15,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201155915] [2021-11-20 06:38:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:15,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:38:15,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:38:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:38:15,764 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:16,167 INFO L93 Difference]: Finished difference Result 248 states and 312 transitions. [2021-11-20 06:38:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:38:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-20 06:38:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:16,170 INFO L225 Difference]: With dead ends: 248 [2021-11-20 06:38:16,170 INFO L226 Difference]: Without dead ends: 247 [2021-11-20 06:38:16,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:38:16,171 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 206 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:16,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 689 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-20 06:38:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 215. [2021-11-20 06:38:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 174 states have (on average 1.3563218390804597) internal successors, (236), 184 states have internal predecessors, (236), 21 states have call successors, (21), 10 states have call predecessors, (21), 12 states have return successors, (24), 20 states have call predecessors, (24), 19 states have call successors, (24) [2021-11-20 06:38:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2021-11-20 06:38:16,188 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 39 [2021-11-20 06:38:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:16,188 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2021-11-20 06:38:16,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2021-11-20 06:38:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-20 06:38:16,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:16,190 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] [2021-11-20 06:38:16,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:38:16,190 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 06:38:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1741690569, now seen corresponding path program 1 times [2021-11-20 06:38:16,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:16,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189474408] [2021-11-20 06:38:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:16,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:38:16,204 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:38:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:38:16,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:38:16,237 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:38:16,238 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-11-20 06:38:16,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-11-20 06:38:16,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-11-20 06:38:16,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-11-20 06:38:16,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-11-20 06:38:16,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-11-20 06:38:16,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-11-20 06:38:16,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-11-20 06:38:16,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-11-20 06:38:16,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-11-20 06:38:16,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-11-20 06:38:16,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-11-20 06:38:16,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-11-20 06:38:16,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-11-20 06:38:16,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-11-20 06:38:16,243 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-11-20 06:38:16,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:38:16,247 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:16,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:38:16,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:38:16 BoogieIcfgContainer [2021-11-20 06:38:16,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:38:16,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:38:16,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:38:16,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:38:16,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:08" (3/4) ... [2021-11-20 06:38:16,297 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:38:16,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:38:16,298 INFO L158 Benchmark]: Toolchain (without parser) took 8938.71ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 63.4MB in the beginning and 78.7MB in the end (delta: -15.3MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-20 06:38:16,298 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:38:16,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.22ms. Allocated memory is still 96.5MB. Free memory was 63.2MB in the beginning and 69.4MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:38:16,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.38ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 67.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:38:16,299 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 96.5MB. Free memory was 67.7MB in the beginning and 66.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:38:16,300 INFO L158 Benchmark]: RCFGBuilder took 517.44ms. Allocated memory is still 96.5MB. Free memory was 66.5MB in the beginning and 52.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:38:16,301 INFO L158 Benchmark]: TraceAbstraction took 8021.22ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 51.7MB in the beginning and 78.7MB in the end (delta: -27.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-11-20 06:38:16,301 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 142.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:38:16,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.22ms. Allocated memory is still 96.5MB. Free memory was 63.2MB in the beginning and 69.4MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.38ms. Allocated memory is still 96.5MB. Free memory was 69.4MB in the beginning and 67.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 96.5MB. Free memory was 67.7MB in the beginning and 66.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 517.44ms. Allocated memory is still 96.5MB. Free memory was 66.5MB in the beginning and 52.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8021.22ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 51.7MB in the beginning and 78.7MB in the end (delta: -27.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 142.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 112. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add1 ; [L234] unsigned int r_add2 ; [L235] unsigned int zero ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int __retres14 ; VAL [ea=127, eb=0] [L242] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L242] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L243] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, zero=0] [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L78] EXPR e + 128 [L78] res = m | ((unsigned int )(e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=1, e=0, res=1] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=36028797018963969, __retres4=1, e=0, res=1] [L244] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L244] b = base2flt(mb, eb) [L245] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=1] [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L110] EXPR (int )(a >> 24U) - 128 [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] [L113] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1195 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1169 mSDsluCounter, 8402 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6884 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1528 IncrementalHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 1518 mSDtfsCounter, 1528 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=16, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 396 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 1829 SizeOfPredicates, 11 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 25 InterpolantComputations, 15 PerfectInterpolantSequences, 214/259 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:38:16,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/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_6aee65fb-6fd9-44ed-bb67-f4e18a16a175/bin/uautomizer-DQz5hQGWxF/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: UNKNOWN: Overapproximated counterexample