./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:38:52,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:38:52,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:38:52,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:38:52,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:38:52,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:38:52,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:38:52,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:38:52,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:38:52,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:38:52,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:38:52,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:38:52,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:38:52,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:38:52,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:38:52,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:38:52,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:38:52,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:38:52,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:38:52,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:38:52,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:38:52,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:38:52,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:38:52,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:38:52,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:38:52,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:38:52,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:38:52,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:38:52,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:38:52,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:38:52,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:38:52,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:38:52,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:38:52,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:38:52,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:38:52,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:38:52,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:38:52,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:38:52,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:38:52,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:38:52,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:38:52,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 06:38:52,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:38:52,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:38:52,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:38:52,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:38:52,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:38:52,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:38:52,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:38:52,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:38:52,723 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:38:52,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:38:52,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:38:52,725 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:38:52,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:38:52,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:38:52,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:38:52,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:38:52,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:38:52,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:38:52,727 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 06:38:52,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:38:52,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:38:52,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:38:52,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:38:52,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:38:52,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:38:52,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:38:52,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:52,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:38:52,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:38:52,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:38:52,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:38:52,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:38:52,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:38:52,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:38:52,736 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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-11-20 06:38:52,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:38:53,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:38:53,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:38:53,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:38:53,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:38:53,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-20 06:38:53,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/data/ecbe4dafa/3d855d84774947be9094ffafd5917081/FLAG92ae023a7 [2021-11-20 06:38:53,569 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:38:53,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-20 06:38:53,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/data/ecbe4dafa/3d855d84774947be9094ffafd5917081/FLAG92ae023a7 [2021-11-20 06:38:53,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/data/ecbe4dafa/3d855d84774947be9094ffafd5917081 [2021-11-20 06:38:53,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:38:53,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:38:53,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:53,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:38:53,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:38:53,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:53" (1/1) ... [2021-11-20 06:38:53,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e008310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:53, skipping insertion in model container [2021-11-20 06:38:53,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:38:53" (1/1) ... [2021-11-20 06:38:53,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:38:54,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:38:54,173 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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-20 06:38:54,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:54,242 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:38:54,252 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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-20 06:38:54,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:38:54,294 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:38:54,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54 WrapperNode [2021-11-20 06:38:54,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:38:54,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:54,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:38:54,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:38:54,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,336 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2021-11-20 06:38:54,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:38:54,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:38:54,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:38:54,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:38:54,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:38:54,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:38:54,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:38:54,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:38:54,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (1/1) ... [2021-11-20 06:38:54,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:38:54,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:54,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:38:54,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:38:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:38:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:38:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 06:38:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 06:38:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:38:54,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:38:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:38:54,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:38:54,519 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:38:54,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:38:54,827 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:38:54,835 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:38:54,835 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:38:54,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:54 BoogieIcfgContainer [2021-11-20 06:38:54,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:38:54,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:38:54,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:38:54,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:38:54,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:38:53" (1/3) ... [2021-11-20 06:38:54,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:54, skipping insertion in model container [2021-11-20 06:38:54,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:38:54" (2/3) ... [2021-11-20 06:38:54,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a6559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:38:54, skipping insertion in model container [2021-11-20 06:38:54,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:54" (3/3) ... [2021-11-20 06:38:54,846 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-11-20 06:38:54,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:38:54,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-20 06:38:54,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:38:54,933 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 06:38:54,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-20 06:38:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 80 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:38:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:38:54,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:54,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:54,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -146311098, now seen corresponding path program 1 times [2021-11-20 06:38:54,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:54,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063612459] [2021-11-20 06:38:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:54,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,127 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 06:38:55,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:55,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063612459] [2021-11-20 06:38:55,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063612459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:55,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:55,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:38:55,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24136083] [2021-11-20 06:38:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:55,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:38:55,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:38:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:38:55,169 INFO L87 Difference]: Start difference. First operand has 87 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 80 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 06:38:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:55,203 INFO L93 Difference]: Finished difference Result 169 states and 225 transitions. [2021-11-20 06:38:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:38:55,205 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 06:38:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:55,214 INFO L225 Difference]: With dead ends: 169 [2021-11-20 06:38:55,214 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 06:38:55,228 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 06:38:55,232 INFO L933 BasicCegarLoop]: 105 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, 105 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 06:38:55,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 06:38:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-20 06:38:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 63 states have internal predecessors, (73), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2021-11-20 06:38:55,276 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 9 [2021-11-20 06:38:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:55,276 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2021-11-20 06:38:55,277 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 06:38:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2021-11-20 06:38:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:38:55,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:55,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:55,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:38:55,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -147252364, now seen corresponding path program 1 times [2021-11-20 06:38:55,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865414869] [2021-11-20 06:38:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:55,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,342 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 06:38:55,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:55,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865414869] [2021-11-20 06:38:55,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865414869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:55,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:55,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:38:55,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430612816] [2021-11-20 06:38:55,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:55,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:55,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:38:55,347 INFO L87 Difference]: Start difference. First operand 69 states and 81 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 06:38:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:55,457 INFO L93 Difference]: Finished difference Result 175 states and 215 transitions. [2021-11-20 06:38:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:55,461 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 06:38:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:55,465 INFO L225 Difference]: With dead ends: 175 [2021-11-20 06:38:55,465 INFO L226 Difference]: Without dead ends: 109 [2021-11-20 06:38:55,466 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 06:38:55,468 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 56 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:55,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 206 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:55,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-20 06:38:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2021-11-20 06:38:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.4871794871794872) internal successors, (116), 93 states have internal predecessors, (116), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2021-11-20 06:38:55,501 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 9 [2021-11-20 06:38:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:55,501 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2021-11-20 06:38:55,502 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 06:38:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2021-11-20 06:38:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:38:55,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:55,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:55,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:38:55,503 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:55,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash 900800379, now seen corresponding path program 1 times [2021-11-20 06:38:55,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:55,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901079522] [2021-11-20 06:38:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:55,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,579 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 06:38:55,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:55,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901079522] [2021-11-20 06:38:55,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901079522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:55,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:55,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:55,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619559804] [2021-11-20 06:38:55,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:55,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:55,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:55,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:55,583 INFO L87 Difference]: Start difference. First operand 100 states and 124 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 06:38:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:55,702 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2021-11-20 06:38:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:55,703 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 06:38:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:55,705 INFO L225 Difference]: With dead ends: 119 [2021-11-20 06:38:55,705 INFO L226 Difference]: Without dead ends: 117 [2021-11-20 06:38:55,706 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 06:38:55,707 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 72 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:55,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 279 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-20 06:38:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2021-11-20 06:38:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.4625) internal successors, (117), 95 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2021-11-20 06:38:55,724 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 13 [2021-11-20 06:38:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:55,724 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2021-11-20 06:38:55,725 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 06:38:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2021-11-20 06:38:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:38:55,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:55,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:55,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:38:55,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2139959222, now seen corresponding path program 1 times [2021-11-20 06:38:55,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:55,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293386419] [2021-11-20 06:38:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:55,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:55,790 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 06:38:55,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:55,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293386419] [2021-11-20 06:38:55,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293386419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:55,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:55,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:55,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729844780] [2021-11-20 06:38:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:55,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:55,797 INFO L87 Difference]: Start difference. First operand 102 states and 125 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 06:38:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:55,927 INFO L93 Difference]: Finished difference Result 222 states and 272 transitions. [2021-11-20 06:38:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:55,928 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 06:38:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:55,930 INFO L225 Difference]: With dead ends: 222 [2021-11-20 06:38:55,933 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 06:38:55,934 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 06:38:55,936 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 94 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:55,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 220 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 06:38:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2021-11-20 06:38:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 99 states have internal predecessors, (121), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-20 06:38:55,953 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 14 [2021-11-20 06:38:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:55,953 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-20 06:38:55,954 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 06:38:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-20 06:38:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:38:55,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:55,955 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:55,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:38:55,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 762086754, now seen corresponding path program 1 times [2021-11-20 06:38:55,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84151696] [2021-11-20 06:38:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:55,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:38:56,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:56,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84151696] [2021-11-20 06:38:56,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84151696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:56,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:56,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:38:56,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105398218] [2021-11-20 06:38:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:56,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:38:56,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:38:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:56,013 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 06:38:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:56,052 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2021-11-20 06:38:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:38:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 15 [2021-11-20 06:38:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:56,055 INFO L225 Difference]: With dead ends: 112 [2021-11-20 06:38:56,055 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 06:38:56,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:38:56,064 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:56,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 06:38:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2021-11-20 06:38:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.4216867469879517) internal successors, (118), 97 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-11-20 06:38:56,094 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 15 [2021-11-20 06:38:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:56,094 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-11-20 06:38:56,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 06:38:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-11-20 06:38:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:38:56,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:56,100 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:56,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:38:56,101 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 762088932, now seen corresponding path program 1 times [2021-11-20 06:38:56,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619735831] [2021-11-20 06:38:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:56,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,180 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 06:38:56,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619735831] [2021-11-20 06:38:56,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619735831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:56,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304008415] [2021-11-20 06:38:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:56,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:56,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:56,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:56,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:38:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:38:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:56,321 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 06:38:56,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:38:56,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304008415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:56,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:38:56,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 06:38:56,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442811292] [2021-11-20 06:38:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:56,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:56,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:38:56,324 INFO L87 Difference]: Start difference. First operand 104 states and 126 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 06:38:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:56,362 INFO L93 Difference]: Finished difference Result 124 states and 153 transitions. [2021-11-20 06:38:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:56,362 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 06:38:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:56,364 INFO L225 Difference]: With dead ends: 124 [2021-11-20 06:38:56,364 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 06:38:56,365 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 06:38:56,366 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 236 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 06:38:56,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 236 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 06:38:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2021-11-20 06:38:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.411764705882353) internal successors, (120), 99 states have internal predecessors, (120), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2021-11-20 06:38:56,380 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 15 [2021-11-20 06:38:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:56,385 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2021-11-20 06:38:56,385 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 06:38:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2021-11-20 06:38:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:38:56,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:56,387 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:56,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:56,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:56,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 636845412, now seen corresponding path program 1 times [2021-11-20 06:38:56,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:56,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131342431] [2021-11-20 06:38:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:56,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,675 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 06:38:56,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131342431] [2021-11-20 06:38:56,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131342431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:56,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:56,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:38:56,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121923021] [2021-11-20 06:38:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:56,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:38:56,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:38:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:38:56,677 INFO L87 Difference]: Start difference. First operand 106 states and 128 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 06:38:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:56,742 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2021-11-20 06:38:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:38:56,742 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 06:38:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:56,744 INFO L225 Difference]: With dead ends: 127 [2021-11-20 06:38:56,744 INFO L226 Difference]: Without dead ends: 125 [2021-11-20 06:38:56,744 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 06:38:56,746 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 221 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 06:38:56,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 221 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-20 06:38:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2021-11-20 06:38:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 96 states have internal predecessors, (116), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2021-11-20 06:38:56,768 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 19 [2021-11-20 06:38:56,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:56,769 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2021-11-20 06:38:56,769 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 06:38:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2021-11-20 06:38:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:38:56,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:56,770 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 06:38:56,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:38:56,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1627476746, now seen corresponding path program 1 times [2021-11-20 06:38:56,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:56,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386853917] [2021-11-20 06:38:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:56,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:56,906 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 06:38:56,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386853917] [2021-11-20 06:38:56,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386853917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:56,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:56,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:56,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778877473] [2021-11-20 06:38:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:56,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:56,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:56,908 INFO L87 Difference]: Start difference. First operand 103 states and 124 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 06:38:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:56,988 INFO L93 Difference]: Finished difference Result 147 states and 178 transitions. [2021-11-20 06:38:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:56,994 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 06:38:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:56,999 INFO L225 Difference]: With dead ends: 147 [2021-11-20 06:38:56,999 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 06:38:57,000 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 06:38:57,002 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 96 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:57,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 219 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 06:38:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2021-11-20 06:38:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 117 states have internal predecessors, (145), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2021-11-20 06:38:57,034 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 23 [2021-11-20 06:38:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:57,035 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-11-20 06:38:57,035 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 06:38:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2021-11-20 06:38:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:38:57,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:57,037 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 06:38:57,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:38:57,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash 250392734, now seen corresponding path program 1 times [2021-11-20 06:38:57,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182897209] [2021-11-20 06:38:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,150 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 06:38:57,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:57,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182897209] [2021-11-20 06:38:57,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182897209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:57,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:57,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:57,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031927008] [2021-11-20 06:38:57,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:57,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:57,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:57,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:57,158 INFO L87 Difference]: Start difference. First operand 125 states and 153 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 06:38:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:57,248 INFO L93 Difference]: Finished difference Result 141 states and 169 transitions. [2021-11-20 06:38:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:57,249 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 06:38:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:57,250 INFO L225 Difference]: With dead ends: 141 [2021-11-20 06:38:57,251 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 06:38:57,251 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 06:38:57,252 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 85 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:57,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 221 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 06:38:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2021-11-20 06:38:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.386138613861386) internal successors, (140), 114 states have internal predecessors, (140), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2021-11-20 06:38:57,263 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 25 [2021-11-20 06:38:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:57,264 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2021-11-20 06:38:57,264 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 06:38:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2021-11-20 06:38:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 06:38:57,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:57,270 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:57,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:38:57,270 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1374389772, now seen corresponding path program 1 times [2021-11-20 06:38:57,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997188006] [2021-11-20 06:38:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:38:57,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:57,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997188006] [2021-11-20 06:38:57,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997188006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:57,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:57,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:57,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326345021] [2021-11-20 06:38:57,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:57,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:57,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:57,392 INFO L87 Difference]: Start difference. First operand 122 states and 148 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:57,475 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2021-11-20 06:38:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:57,475 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-11-20 06:38:57,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:57,477 INFO L225 Difference]: With dead ends: 136 [2021-11-20 06:38:57,477 INFO L226 Difference]: Without dead ends: 134 [2021-11-20 06:38:57,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 06:38:57,479 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 94 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:57,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 212 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-20 06:38:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2021-11-20 06:38:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 108 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2021-11-20 06:38:57,496 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 30 [2021-11-20 06:38:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:57,497 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2021-11-20 06:38:57,498 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2021-11-20 06:38:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 06:38:57,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:57,502 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:57,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:38:57,506 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1173906380, now seen corresponding path program 1 times [2021-11-20 06:38:57,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:57,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157638613] [2021-11-20 06:38:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:38:57,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:57,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157638613] [2021-11-20 06:38:57,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157638613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:57,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:57,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:38:57,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652840072] [2021-11-20 06:38:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:57,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:38:57,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:38:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:38:57,621 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:57,679 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2021-11-20 06:38:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:38:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-11-20 06:38:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:57,681 INFO L225 Difference]: With dead ends: 130 [2021-11-20 06:38:57,681 INFO L226 Difference]: Without dead ends: 128 [2021-11-20 06:38:57,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 06:38:57,683 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:57,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 212 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:38:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-20 06:38:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-11-20 06:38:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.351063829787234) internal successors, (127), 103 states have internal predecessors, (127), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2021-11-20 06:38:57,698 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 32 [2021-11-20 06:38:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:57,699 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-11-20 06:38:57,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:38:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2021-11-20 06:38:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:38:57,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:57,701 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:38:57,702 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1273705285, now seen corresponding path program 1 times [2021-11-20 06:38:57,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25545711] [2021-11-20 06:38:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:38:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:38:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:38:57,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:57,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25545711] [2021-11-20 06:38:57,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25545711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815084153] [2021-11-20 06:38:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:57,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:57,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:57,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:38:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:57,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:38:57,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 06:38:58,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:38:58,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815084153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:58,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:38:58,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 8] total 18 [2021-11-20 06:38:58,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480659541] [2021-11-20 06:38:58,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:58,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:38:58,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:38:58,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:38:58,295 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 06:38:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:58,673 INFO L93 Difference]: Finished difference Result 302 states and 366 transitions. [2021-11-20 06:38:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:38:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 36 [2021-11-20 06:38:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:58,675 INFO L225 Difference]: With dead ends: 302 [2021-11-20 06:38:58,675 INFO L226 Difference]: Without dead ends: 158 [2021-11-20 06:38:58,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:38:58,677 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 70 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:58,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 785 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-20 06:38:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2021-11-20 06:38:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 90 states have (on average 1.3) internal successors, (117), 99 states have internal predecessors, (117), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2021-11-20 06:38:58,689 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 36 [2021-11-20 06:38:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:58,689 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2021-11-20 06:38:58,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 06:38:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2021-11-20 06:38:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 06:38:58,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:58,691 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:58,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:58,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:58,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:38:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1255657985, now seen corresponding path program 1 times [2021-11-20 06:38:58,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:38:58,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475963631] [2021-11-20 06:38:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:58,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:38:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:38:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:38:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 06:38:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:38:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:38:59,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:38:59,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475963631] [2021-11-20 06:38:59,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475963631] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:38:59,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184681619] [2021-11-20 06:38:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:59,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:38:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:38:59,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:38:59,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:38:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:59,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:38:59,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 06:38:59,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:38:59,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184681619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:59,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:38:59,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2021-11-20 06:38:59,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747825243] [2021-11-20 06:38:59,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:59,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:38:59,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:38:59,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:38:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:38:59,461 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:38:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:59,852 INFO L93 Difference]: Finished difference Result 257 states and 295 transitions. [2021-11-20 06:38:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:38:59,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 49 [2021-11-20 06:38:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:59,855 INFO L225 Difference]: With dead ends: 257 [2021-11-20 06:38:59,855 INFO L226 Difference]: Without dead ends: 173 [2021-11-20 06:38:59,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:38:59,857 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 181 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:59,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 447 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:38:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-20 06:38:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 108. [2021-11-20 06:38:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 90 states have (on average 1.2666666666666666) internal successors, (114), 99 states have internal predecessors, (114), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:38:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2021-11-20 06:38:59,868 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 49 [2021-11-20 06:38:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:59,869 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2021-11-20 06:38:59,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-20 06:38:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2021-11-20 06:38:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:38:59,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:59,870 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:59,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:39:00,083 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -373684430, now seen corresponding path program 1 times [2021-11-20 06:39:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998267947] [2021-11-20 06:39:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 06:39:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 06:39:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:39:00,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:00,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998267947] [2021-11-20 06:39:00,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998267947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:00,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995054617] [2021-11-20 06:39:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:00,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:00,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:00,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:00,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:39:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:00,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:39:00,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:39:00,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:39:00,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995054617] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:00,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:00,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-20 06:39:00,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394345301] [2021-11-20 06:39:00,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:00,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:39:00,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:39:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:39:00,583 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:00,792 INFO L93 Difference]: Finished difference Result 401 states and 455 transitions. [2021-11-20 06:39:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:39:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2021-11-20 06:39:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:00,796 INFO L225 Difference]: With dead ends: 401 [2021-11-20 06:39:00,796 INFO L226 Difference]: Without dead ends: 318 [2021-11-20 06:39:00,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:39:00,798 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 168 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:00,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 383 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:39:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-20 06:39:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 128. [2021-11-20 06:39:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 119 states have internal predecessors, (138), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:39:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2021-11-20 06:39:00,819 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 55 [2021-11-20 06:39:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:00,819 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2021-11-20 06:39:00,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2021-11-20 06:39:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 06:39:00,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:00,821 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:00,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:01,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 06:39:01,037 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1080206945, now seen corresponding path program 1 times [2021-11-20 06:39:01,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:01,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525871901] [2021-11-20 06:39:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:01,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 06:39:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:39:01,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525871901] [2021-11-20 06:39:01,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525871901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860136061] [2021-11-20 06:39:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:01,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:01,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:01,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:39:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:01,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:39:01,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:39:01,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 06:39:01,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860136061] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:01,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:39:01,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 9] total 18 [2021-11-20 06:39:01,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587609219] [2021-11-20 06:39:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:39:01,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:39:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:01,681 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:01,764 INFO L93 Difference]: Finished difference Result 170 states and 190 transitions. [2021-11-20 06:39:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:39:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2021-11-20 06:39:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:01,766 INFO L225 Difference]: With dead ends: 170 [2021-11-20 06:39:01,766 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 06:39:01,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:39:01,767 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 6 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:01,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 415 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 06:39:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-11-20 06:39:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 119 states have internal predecessors, (136), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:39:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2021-11-20 06:39:01,783 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 56 [2021-11-20 06:39:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:01,784 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2021-11-20 06:39:01,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2021-11-20 06:39:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 06:39:01,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:01,786 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:01,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:02,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:39:02,009 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -826377518, now seen corresponding path program 2 times [2021-11-20 06:39:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:02,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556473591] [2021-11-20 06:39:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:02,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 06:39:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:02,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556473591] [2021-11-20 06:39:02,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556473591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556697835] [2021-11-20 06:39:02,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:39:02,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:02,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:02,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:39:02,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:39:02,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:39:02,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:39:02,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 06:39:02,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:39:02,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556697835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:02,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:39:02,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-11-20 06:39:02,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507347049] [2021-11-20 06:39:02,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:02,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:39:02,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:39:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:39:02,340 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:02,427 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2021-11-20 06:39:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:39:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2021-11-20 06:39:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:02,429 INFO L225 Difference]: With dead ends: 198 [2021-11-20 06:39:02,430 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 06:39:02,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:39:02,431 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 116 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:02,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 564 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 06:39:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 145. [2021-11-20 06:39:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 126 states have (on average 1.2301587301587302) internal successors, (155), 135 states have internal predecessors, (155), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2021-11-20 06:39:02,450 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 60 [2021-11-20 06:39:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:02,451 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2021-11-20 06:39:02,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2021-11-20 06:39:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 06:39:02,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:02,452 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:02,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:02,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:39:02,669 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash -826317936, now seen corresponding path program 1 times [2021-11-20 06:39:02,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:02,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130306161] [2021-11-20 06:39:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:02,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 06:39:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:02,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130306161] [2021-11-20 06:39:02,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130306161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737635960] [2021-11-20 06:39:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:02,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:02,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:02,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:39:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:02,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:39:02,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:39:02,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737635960] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:03,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:03,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-20 06:39:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487522667] [2021-11-20 06:39:03,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:39:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:39:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:39:03,233 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:39:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:05,147 INFO L93 Difference]: Finished difference Result 348 states and 394 transitions. [2021-11-20 06:39:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:39:05,148 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-11-20 06:39:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:05,150 INFO L225 Difference]: With dead ends: 348 [2021-11-20 06:39:05,150 INFO L226 Difference]: Without dead ends: 242 [2021-11-20 06:39:05,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=120, Invalid=186, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:05,151 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 117 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:05,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 353 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:39:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-20 06:39:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 145. [2021-11-20 06:39:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 135 states have internal predecessors, (151), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2021-11-20 06:39:05,169 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 60 [2021-11-20 06:39:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:05,169 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2021-11-20 06:39:05,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:39:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2021-11-20 06:39:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 06:39:05,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:05,171 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:05,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:05,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:05,397 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1838033761, now seen corresponding path program 1 times [2021-11-20 06:39:05,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:05,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655936001] [2021-11-20 06:39:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:05,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:39:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:05,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:05,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655936001] [2021-11-20 06:39:05,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655936001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:05,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700241533] [2021-11-20 06:39:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:05,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:05,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:05,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:05,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:39:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:05,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:39:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 26 proven. 87 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:39:05,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:06,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700241533] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:06,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:06,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-20 06:39:06,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865691017] [2021-11-20 06:39:06,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:06,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 06:39:06,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 06:39:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:39:06,295 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:06,658 INFO L93 Difference]: Finished difference Result 663 states and 737 transitions. [2021-11-20 06:39:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:39:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2021-11-20 06:39:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:06,663 INFO L225 Difference]: With dead ends: 663 [2021-11-20 06:39:06,663 INFO L226 Difference]: Without dead ends: 563 [2021-11-20 06:39:06,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=515, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:39:06,665 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 313 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:06,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 665 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:39:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-20 06:39:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 185. [2021-11-20 06:39:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 175 states have internal predecessors, (199), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2021-11-20 06:39:06,690 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 79 [2021-11-20 06:39:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:06,691 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2021-11-20 06:39:06,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2021-11-20 06:39:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:39:06,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:06,693 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:06,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:06,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:39:06,921 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1054874640, now seen corresponding path program 2 times [2021-11-20 06:39:06,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:06,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437317733] [2021-11-20 06:39:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:06,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:39:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 06:39:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:07,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437317733] [2021-11-20 06:39:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437317733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689332861] [2021-11-20 06:39:07,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:39:07,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:07,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:07,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:39:07,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:39:07,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:39:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 06:39:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-20 06:39:07,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:39:07,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689332861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:07,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:39:07,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2021-11-20 06:39:07,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084386719] [2021-11-20 06:39:07,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:07,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:39:07,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:39:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:39:07,558 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:07,700 INFO L93 Difference]: Finished difference Result 236 states and 258 transitions. [2021-11-20 06:39:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:39:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2021-11-20 06:39:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:07,703 INFO L225 Difference]: With dead ends: 236 [2021-11-20 06:39:07,703 INFO L226 Difference]: Without dead ends: 235 [2021-11-20 06:39:07,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:39:07,704 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 115 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:07,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 559 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:39:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-20 06:39:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 185. [2021-11-20 06:39:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 175 states have internal predecessors, (198), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2021-11-20 06:39:07,722 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 80 [2021-11-20 06:39:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:07,723 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2021-11-20 06:39:07,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:39:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2021-11-20 06:39:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 06:39:07,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:07,724 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:07,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:07,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:07,928 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 64993556, now seen corresponding path program 1 times [2021-11-20 06:39:07,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:07,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055046447] [2021-11-20 06:39:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:07,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:39:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:08,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 06:39:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:08,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:08,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055046447] [2021-11-20 06:39:08,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055046447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:08,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613370570] [2021-11-20 06:39:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:08,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:08,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:08,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:39:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:08,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:39:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 75 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:39:08,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:09,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613370570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:09,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:09,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-11-20 06:39:09,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615033479] [2021-11-20 06:39:09,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:09,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 06:39:09,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:39:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:39:09,288 INFO L87 Difference]: Start difference. First operand 185 states and 207 transitions. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:39:15,913 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 41 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:39:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:38,632 INFO L93 Difference]: Finished difference Result 476 states and 540 transitions. [2021-11-20 06:39:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:39:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2021-11-20 06:39:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:38,636 INFO L225 Difference]: With dead ends: 476 [2021-11-20 06:39:38,637 INFO L226 Difference]: Without dead ends: 370 [2021-11-20 06:39:38,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=501, Invalid=902, Unknown=3, NotChecked=0, Total=1406 [2021-11-20 06:39:38,640 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 218 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:38,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 793 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:39:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-20 06:39:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 185. [2021-11-20 06:39:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 166 states have (on average 1.144578313253012) internal successors, (190), 175 states have internal predecessors, (190), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2021-11-20 06:39:38,663 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 82 [2021-11-20 06:39:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:38,664 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 199 transitions. [2021-11-20 06:39:38,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:39:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 199 transitions. [2021-11-20 06:39:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 06:39:38,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:38,666 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:38,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:38,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:38,893 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:38,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 684697381, now seen corresponding path program 1 times [2021-11-20 06:39:38,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:38,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626136992] [2021-11-20 06:39:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:38,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:39,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 06:39:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 06:39:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:39,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:39,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626136992] [2021-11-20 06:39:39,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626136992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:39,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294561680] [2021-11-20 06:39:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:39,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:39,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:39,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:39:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:39,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:39:39,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 26 proven. 483 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:39:39,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:40,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294561680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:40,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:40,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2021-11-20 06:39:40,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263295717] [2021-11-20 06:39:40,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:40,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-20 06:39:40,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-20 06:39:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=1604, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 06:39:40,881 INFO L87 Difference]: Start difference. First operand 185 states and 199 transitions. Second operand has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:41,540 INFO L93 Difference]: Finished difference Result 1143 states and 1263 transitions. [2021-11-20 06:39:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:39:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2021-11-20 06:39:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:41,547 INFO L225 Difference]: With dead ends: 1143 [2021-11-20 06:39:41,547 INFO L226 Difference]: Without dead ends: 1043 [2021-11-20 06:39:41,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=977, Invalid=1779, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 06:39:41,550 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 1096 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:41,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 622 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:39:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-20 06:39:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 265. [2021-11-20 06:39:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 246 states have (on average 1.1626016260162602) internal successors, (286), 255 states have internal predecessors, (286), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:39:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2021-11-20 06:39:41,608 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 121 [2021-11-20 06:39:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:41,608 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2021-11-20 06:39:41,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2021-11-20 06:39:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 06:39:41,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:41,610 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:41,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:41,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:39:41,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1264921108, now seen corresponding path program 2 times [2021-11-20 06:39:41,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:41,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914886576] [2021-11-20 06:39:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:41,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 06:39:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 06:39:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 4 proven. 465 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:42,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:42,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914886576] [2021-11-20 06:39:42,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914886576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:42,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622744977] [2021-11-20 06:39:42,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:39:42,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:42,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:39:42,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:39:42,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:39:42,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:39:42,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2021-11-20 06:39:42,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2021-11-20 06:39:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622744977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:43,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 28 [2021-11-20 06:39:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269731818] [2021-11-20 06:39:43,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:43,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 06:39:43,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 06:39:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:39:43,108 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-20 06:39:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:43,873 INFO L93 Difference]: Finished difference Result 593 states and 676 transitions. [2021-11-20 06:39:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:39:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 122 [2021-11-20 06:39:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:43,878 INFO L225 Difference]: With dead ends: 593 [2021-11-20 06:39:43,878 INFO L226 Difference]: Without dead ends: 493 [2021-11-20 06:39:43,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 06:39:43,881 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 440 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:43,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1508 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:39:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-20 06:39:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 282. [2021-11-20 06:39:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 261 states have (on average 1.157088122605364) internal successors, (302), 269 states have internal predecessors, (302), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:39:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-11-20 06:39:43,916 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 122 [2021-11-20 06:39:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:43,916 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-11-20 06:39:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-20 06:39:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-11-20 06:39:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 06:39:43,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:43,919 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:43,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:44,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 06:39:44,123 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:39:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1327307402, now seen corresponding path program 1 times [2021-11-20 06:39:44,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:44,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471548778] [2021-11-20 06:39:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:44,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:39:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:39:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:39:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 4 proven. 535 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:44,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471548778] [2021-11-20 06:39:44,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471548778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:44,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672563494] [2021-11-20 06:39:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:44,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:44,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 06:39:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-20 06:39:44,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 26 proven. 525 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:39:45,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 4 proven. 535 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:39:46,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672563494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:46,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:46,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2021-11-20 06:39:46,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573053821] [2021-11-20 06:39:46,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:46,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-20 06:39:46,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-20 06:39:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 06:39:46,800 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 52 states, 52 states have (on average 5.346153846153846) internal successors, (278), 52 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:40:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:31,968 INFO L93 Difference]: Finished difference Result 708 states and 810 transitions. [2021-11-20 06:40:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 06:40:31,970 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.346153846153846) internal successors, (278), 52 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-11-20 06:40:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:31,974 INFO L225 Difference]: With dead ends: 708 [2021-11-20 06:40:31,974 INFO L226 Difference]: Without dead ends: 585 [2021-11-20 06:40:31,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=1641, Invalid=3902, Unknown=7, NotChecked=0, Total=5550 [2021-11-20 06:40:31,978 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 492 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:31,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 2033 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 06:40:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-11-20 06:40:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 282. [2021-11-20 06:40:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 261 states have (on average 1.1226053639846743) internal successors, (293), 269 states have internal predecessors, (293), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:40:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 306 transitions. [2021-11-20 06:40:32,008 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 306 transitions. Word has length 128 [2021-11-20 06:40:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:32,008 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 306 transitions. [2021-11-20 06:40:32,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.346153846153846) internal successors, (278), 52 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:40:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 306 transitions. [2021-11-20 06:40:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-20 06:40:32,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:32,011 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:32,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:32,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:32,226 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:40:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -110661052, now seen corresponding path program 2 times [2021-11-20 06:40:32,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:32,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958587199] [2021-11-20 06:40:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:32,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:40:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:32,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:40:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-20 06:40:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2021-11-20 06:40:32,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:32,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958587199] [2021-11-20 06:40:32,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958587199] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:40:32,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44215494] [2021-11-20 06:40:32,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:40:32,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:40:32,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:40:32,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:40:32,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:40:32,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:40:32,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:40:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2021-11-20 06:40:33,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:40:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44215494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:33,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:40:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2021-11-20 06:40:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120195252] [2021-11-20 06:40:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:33,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:40:33,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:40:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:40:33,392 INFO L87 Difference]: Start difference. First operand 282 states and 306 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:40:33,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:33,711 INFO L93 Difference]: Finished difference Result 335 states and 359 transitions. [2021-11-20 06:40:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:40:33,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 173 [2021-11-20 06:40:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:33,714 INFO L225 Difference]: With dead ends: 335 [2021-11-20 06:40:33,714 INFO L226 Difference]: Without dead ends: 332 [2021-11-20 06:40:33,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:40:33,715 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 80 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:33,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:40:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-20 06:40:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 293. [2021-11-20 06:40:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 272 states have (on average 1.1323529411764706) internal successors, (308), 280 states have internal predecessors, (308), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:40:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 321 transitions. [2021-11-20 06:40:33,743 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 321 transitions. Word has length 173 [2021-11-20 06:40:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:33,744 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 321 transitions. [2021-11-20 06:40:33,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 06:40:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 321 transitions. [2021-11-20 06:40:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-20 06:40:33,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:33,747 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:33,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:33,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:33,961 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:40:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 864474836, now seen corresponding path program 1 times [2021-11-20 06:40:33,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859336645] [2021-11-20 06:40:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:33,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:40:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:40:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-20 06:40:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2021-11-20 06:40:34,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859336645] [2021-11-20 06:40:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859336645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:34,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:34,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:40:34,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277613457] [2021-11-20 06:40:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:34,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:40:34,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:40:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:40:34,424 INFO L87 Difference]: Start difference. First operand 293 states and 321 transitions. Second operand has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:40:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:34,792 INFO L93 Difference]: Finished difference Result 348 states and 376 transitions. [2021-11-20 06:40:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:40:34,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2021-11-20 06:40:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:34,794 INFO L225 Difference]: With dead ends: 348 [2021-11-20 06:40:34,795 INFO L226 Difference]: Without dead ends: 342 [2021-11-20 06:40:34,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:40:34,795 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 145 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:34,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 490 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:40:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-20 06:40:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 311. [2021-11-20 06:40:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 290 states have (on average 1.1310344827586207) internal successors, (328), 298 states have internal predecessors, (328), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:40:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 341 transitions. [2021-11-20 06:40:34,824 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 341 transitions. Word has length 174 [2021-11-20 06:40:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:34,825 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 341 transitions. [2021-11-20 06:40:34,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:40:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 341 transitions. [2021-11-20 06:40:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-20 06:40:34,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:34,827 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:34,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:40:34,828 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-11-20 06:40:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1614496444, now seen corresponding path program 1 times [2021-11-20 06:40:34,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:34,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479717806] [2021-11-20 06:40:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:34,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:40:34,891 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:40:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:40:34,990 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:40:34,991 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:40:34,992 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2021-11-20 06:40:34,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2021-11-20 06:40:34,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2021-11-20 06:40:34,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2021-11-20 06:40:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2021-11-20 06:40:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2021-11-20 06:40:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2021-11-20 06:40:34,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2021-11-20 06:40:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2021-11-20 06:40:34,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2021-11-20 06:40:34,998 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2021-11-20 06:40:34,998 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2021-11-20 06:40:34,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2021-11-20 06:40:34,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2021-11-20 06:40:34,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2021-11-20 06:40:34,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2021-11-20 06:40:34,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2021-11-20 06:40:35,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2021-11-20 06:40:35,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:40:35,004 INFO L732 BasicCegarLoop]: Path program histogram: [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 06:40:35,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:40:35,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:40:35 BoogieIcfgContainer [2021-11-20 06:40:35,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:40:35,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:40:35,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:40:35,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:40:35,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:38:54" (3/4) ... [2021-11-20 06:40:35,184 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:40:35,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:40:35,185 INFO L158 Benchmark]: Toolchain (without parser) took 101238.86ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 60.0MB in the beginning and 49.5MB in the end (delta: 10.5MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,186 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:40:35,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.55ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 68.4MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,187 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.14ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 66.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,187 INFO L158 Benchmark]: Boogie Preprocessor took 30.16ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 65.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,188 INFO L158 Benchmark]: RCFGBuilder took 468.88ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 50.8MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,191 INFO L158 Benchmark]: TraceAbstraction took 100335.30ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 50.2MB in the beginning and 49.5MB in the end (delta: 719.5kB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2021-11-20 06:40:35,192 INFO L158 Benchmark]: Witness Printer took 10.00ms. Allocated memory is still 136.3MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:40:35,195 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 94.4MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.55ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 68.4MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.14ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 66.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.16ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 65.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.88ms. Allocated memory is still 94.4MB. Free memory was 65.2MB in the beginning and 50.8MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 100335.30ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 50.2MB in the beginning and 49.5MB in the end (delta: 719.5kB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. * Witness Printer took 10.00ms. Allocated memory is still 136.3MB. Free memory is still 49.5MB. 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: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 173, overapproximation of bitwiseAnd at line 174. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sa ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=127, eb=0] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=2, e=-24, res=2] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=1, \result=36028797018963970, __retres4=2, e=-24, res=2] [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=36028797018963970, ea=127, eb=0, zero=0] [L239] one = base2flt(1, 0) [L240] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L80] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L240] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, one=2, zero=0] [L240] a = base2flt(ma, ea) [L241] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=1, e=0, res=1] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=36028797018963969, __retres4=1, e=0, res=1] [L241] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, one=2, zero=0] [L241] b = base2flt(mb, eb) [L243] COND FALSE !(a < zero) VAL [a=4294967295, b=1, ea=127, eb=0, ma=33554432, mb=16777216, one=2, zero=0] [L246] COND TRUE a > zero [L247] tmp = 1 VAL [a=4294967295, b=1, ea=127, eb=0, ma=33554432, mb=16777216, one=2, tmp=1, zero=0] [L251] sa = tmp VAL [a=4294967295, b=1, ea=127, eb=0, ma=33554432, mb=16777216, one=2, sa=1, tmp=1, zero=0] [L254] CALL mulflt(a, b) [L148] unsigned int res ; [L149] unsigned int ma ; [L150] unsigned int mb ; [L151] unsigned long long accu ; [L152] int ea ; [L153] int eb ; [L154] unsigned int tmp ; [L155] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L158] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L165] COND FALSE !(! b) [L171] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L172] EXPR (int )(a >> 24U) - 128 [L172] ea = (int )(a >> 24U) - 128 [L173] ma = ma | (1U << 24U) [L174] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] [L175] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: 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 3 procedures, 87 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 100.1s, OverallIterations: 26, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 81.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4173 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4161 mSDsluCounter, 12401 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10513 mSDsCounter, 727 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5228 IncrementalHoareTripleChecker+Invalid, 5955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 727 mSolverCounterUnsat, 1888 mSDtfsCounter, 5228 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2309 GetRequests, 1885 SyntacticMatches, 1 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3411 ImplicationChecksByTransitivity, 79.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=25, InterpolantAutomatonStates: 314, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 2590 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 2769 NumberOfCodeBlocks, 2522 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3334 ConstructedInterpolants, 0 QuantifiedInterpolants, 11855 SizeOfPredicates, 40 NumberOfNonLiveVariables, 2272 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 49 InterpolantComputations, 16 PerfectInterpolantSequences, 6246/10574 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 06:40:35,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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_028c55ff-a177-4e8c-b6c0-ae48c1ba2020/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