./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:20:20,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:20:20,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:20:20,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:20:20,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:20:20,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:20:20,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:20:20,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:20:20,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:20:20,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:20:20,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:20:20,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:20:20,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:20:20,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:20:20,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:20:20,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:20:20,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:20:20,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:20:20,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:20:20,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:20:20,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:20:20,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:20:20,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:20:20,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:20:20,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:20:20,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:20:20,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:20:20,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:20:20,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:20:20,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:20:20,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:20:20,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:20:20,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:20:20,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:20:20,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:20:20,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:20:20,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:20:20,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:20:20,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:20:20,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:20:20,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:20:20,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:20:20,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:20:20,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:20:20,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:20:20,711 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:20:20,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:20:20,712 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:20:20,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:20:20,712 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:20:20,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:20:20,712 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:20:20,714 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:20:20,714 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:20:20,714 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:20:20,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:20:20,715 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:20:20,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:20:20,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:20:20,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:20:20,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:20:20,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:20:20,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:20:20,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:20:20,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:20:20,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:20:20,717 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:20:20,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:20:20,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:20:20,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:20:20,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:20:20,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:20:20,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:20:20,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:20,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:20:20,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:20:20,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:20:20,721 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:20:20,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:20:20,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:20:20,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:20:20,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:20:20,722 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2021-10-13 07:20:21,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:20:21,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:20:21,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:20:21,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:20:21,075 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:20:21,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:20:21,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/data/afe92ecc8/9aa0ec5811f9499f8648961fd639f68a/FLAG02038163a [2021-10-13 07:20:21,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:20:21,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:20:21,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/data/afe92ecc8/9aa0ec5811f9499f8648961fd639f68a/FLAG02038163a [2021-10-13 07:20:22,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/data/afe92ecc8/9aa0ec5811f9499f8648961fd639f68a [2021-10-13 07:20:22,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:20:22,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:20:22,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:22,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:20:22,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:20:22,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7318a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22, skipping insertion in model container [2021-10-13 07:20:22,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:20:22,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:20:22,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:20:22,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:22,579 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:20:22,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:20:22,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:22,654 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:20:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22 WrapperNode [2021-10-13 07:20:22,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:22,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:20:22,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:20:22,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:20:22,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:20:22,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:20:22,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:20:22,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:20:22,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:20:22,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:20:22,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:20:22,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:20:22,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (1/1) ... [2021-10-13 07:20:22,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:22,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:20:22,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:20:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:20:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:20:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:20:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:20:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:20:24,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:20:24,301 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 07:20:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:24 BoogieIcfgContainer [2021-10-13 07:20:24,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:20:24,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:20:24,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:20:24,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:20:24,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:22" (1/3) ... [2021-10-13 07:20:24,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a1988d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:24, skipping insertion in model container [2021-10-13 07:20:24,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22" (2/3) ... [2021-10-13 07:20:24,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a1988d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:24, skipping insertion in model container [2021-10-13 07:20:24,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:24" (3/3) ... [2021-10-13 07:20:24,316 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-13 07:20:24,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:20:24,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-13 07:20:24,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:20:24,407 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, mConcurrency=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 [2021-10-13 07:20:24,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-10-13 07:20:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 69 states have (on average 1.8405797101449275) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:20:24,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:24,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:20:24,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1237383565, now seen corresponding path program 1 times [2021-10-13 07:20:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590420763] [2021-10-13 07:20:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:24,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:24,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:24,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590420763] [2021-10-13 07:20:24,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590420763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:24,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:24,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:24,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171041469] [2021-10-13 07:20:24,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:20:24,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:20:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:20:24,747 INFO L87 Difference]: Start difference. First operand has 98 states, 69 states have (on average 1.8405797101449275) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:24,803 INFO L93 Difference]: Finished difference Result 177 states and 229 transitions. [2021-10-13 07:20:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:20:24,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:20:24,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:24,821 INFO L225 Difference]: With dead ends: 177 [2021-10-13 07:20:24,823 INFO L226 Difference]: Without dead ends: 90 [2021-10-13 07:20:24,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:20:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-13 07:20:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-13 07:20:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.6875) internal successors, (108), 89 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-10-13 07:20:24,891 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 6 [2021-10-13 07:20:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:24,892 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-10-13 07:20:24,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-10-13 07:20:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:20:24,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:24,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:20:24,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:20:24,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:24,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1236051172, now seen corresponding path program 1 times [2021-10-13 07:20:24,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:24,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937968824] [2021-10-13 07:20:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:24,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:25,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:25,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937968824] [2021-10-13 07:20:25,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937968824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:25,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:25,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:20:25,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806698125] [2021-10-13 07:20:25,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:25,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:25,008 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:25,179 INFO L93 Difference]: Finished difference Result 177 states and 210 transitions. [2021-10-13 07:20:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:25,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:20:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:25,185 INFO L225 Difference]: With dead ends: 177 [2021-10-13 07:20:25,185 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 07:20:25,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 07:20:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-10-13 07:20:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 101 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-10-13 07:20:25,213 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 6 [2021-10-13 07:20:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:25,214 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-10-13 07:20:25,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-10-13 07:20:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:20:25,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:25,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:25,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:20:25,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash 946482336, now seen corresponding path program 1 times [2021-10-13 07:20:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:25,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810798287] [2021-10-13 07:20:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:25,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:25,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:25,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810798287] [2021-10-13 07:20:25,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810798287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:25,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:25,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:25,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361713998] [2021-10-13 07:20:25,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:25,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:25,327 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:25,499 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2021-10-13 07:20:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:25,501 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:20:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:25,504 INFO L225 Difference]: With dead ends: 139 [2021-10-13 07:20:25,506 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 07:20:25,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:20:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 07:20:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2021-10-13 07:20:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.5) internal successors, (123), 102 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2021-10-13 07:20:25,523 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 8 [2021-10-13 07:20:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:25,524 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2021-10-13 07:20:25,524 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2021-10-13 07:20:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:20:25,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:25,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:25,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:20:25,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:25,529 INFO L82 PathProgramCache]: Analyzing trace with hash -723818522, now seen corresponding path program 1 times [2021-10-13 07:20:25,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:25,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081195470] [2021-10-13 07:20:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:25,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:25,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:25,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081195470] [2021-10-13 07:20:25,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081195470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:25,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:25,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:25,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953546830] [2021-10-13 07:20:25,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:25,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:25,602 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:25,678 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2021-10-13 07:20:25,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:25,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:20:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:25,681 INFO L225 Difference]: With dead ends: 131 [2021-10-13 07:20:25,681 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 07:20:25,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 07:20:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2021-10-13 07:20:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 94 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-10-13 07:20:25,692 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 9 [2021-10-13 07:20:25,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:25,693 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-10-13 07:20:25,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-10-13 07:20:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:20:25,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:25,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:25,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:20:25,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:25,696 INFO L82 PathProgramCache]: Analyzing trace with hash -609635025, now seen corresponding path program 1 times [2021-10-13 07:20:25,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:25,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104899934] [2021-10-13 07:20:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:25,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:25,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:25,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104899934] [2021-10-13 07:20:25,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104899934] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:25,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:25,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:25,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465367465] [2021-10-13 07:20:25,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:20:25,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:20:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:20:25,828 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:25,915 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2021-10-13 07:20:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:20:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:20:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:25,917 INFO L225 Difference]: With dead ends: 166 [2021-10-13 07:20:25,917 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:20:25,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:20:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 95. [2021-10-13 07:20:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-10-13 07:20:25,928 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 10 [2021-10-13 07:20:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:25,928 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-10-13 07:20:25,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-10-13 07:20:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:20:25,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:25,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:25,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:20:25,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:25,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:25,931 INFO L82 PathProgramCache]: Analyzing trace with hash -618399406, now seen corresponding path program 1 times [2021-10-13 07:20:25,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:25,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344707396] [2021-10-13 07:20:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:25,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:25,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:25,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344707396] [2021-10-13 07:20:25,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344707396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:25,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:25,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:25,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862703198] [2021-10-13 07:20:25,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:25,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:25,968 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:26,043 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2021-10-13 07:20:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:26,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:20:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:26,045 INFO L225 Difference]: With dead ends: 129 [2021-10-13 07:20:26,045 INFO L226 Difference]: Without dead ends: 127 [2021-10-13 07:20:26,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:20:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-13 07:20:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 98. [2021-10-13 07:20:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 97 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2021-10-13 07:20:26,053 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 10 [2021-10-13 07:20:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:26,053 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2021-10-13 07:20:26,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2021-10-13 07:20:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:20:26,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:26,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:26,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:20:26,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash -76089496, now seen corresponding path program 1 times [2021-10-13 07:20:26,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:26,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511325999] [2021-10-13 07:20:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:26,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:26,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511325999] [2021-10-13 07:20:26,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511325999] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:26,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:26,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:26,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866362499] [2021-10-13 07:20:26,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:26,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:26,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:26,106 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:26,185 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2021-10-13 07:20:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:26,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:20:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:26,187 INFO L225 Difference]: With dead ends: 130 [2021-10-13 07:20:26,187 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 07:20:26,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:20:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 07:20:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2021-10-13 07:20:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.4) internal successors, (119), 99 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2021-10-13 07:20:26,196 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 10 [2021-10-13 07:20:26,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:26,196 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2021-10-13 07:20:26,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2021-10-13 07:20:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:20:26,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:26,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:26,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:20:26,198 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:26,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1158204508, now seen corresponding path program 1 times [2021-10-13 07:20:26,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:26,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148838121] [2021-10-13 07:20:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:26,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:26,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148838121] [2021-10-13 07:20:26,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148838121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:26,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:26,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:26,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217249072] [2021-10-13 07:20:26,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:26,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:26,229 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:26,300 INFO L93 Difference]: Finished difference Result 213 states and 246 transitions. [2021-10-13 07:20:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:26,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:20:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:26,302 INFO L225 Difference]: With dead ends: 213 [2021-10-13 07:20:26,302 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:20:26,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:20:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 105. [2021-10-13 07:20:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2021-10-13 07:20:26,327 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 11 [2021-10-13 07:20:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:26,327 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2021-10-13 07:20:26,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2021-10-13 07:20:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:20:26,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:26,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:26,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:20:26,329 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:26,330 INFO L82 PathProgramCache]: Analyzing trace with hash -688887558, now seen corresponding path program 1 times [2021-10-13 07:20:26,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:26,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270809818] [2021-10-13 07:20:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:26,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:26,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270809818] [2021-10-13 07:20:26,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270809818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:26,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:26,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:20:26,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108587760] [2021-10-13 07:20:26,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:26,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:26,361 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:26,443 INFO L93 Difference]: Finished difference Result 140 states and 160 transitions. [2021-10-13 07:20:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:20:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:26,445 INFO L225 Difference]: With dead ends: 140 [2021-10-13 07:20:26,445 INFO L226 Difference]: Without dead ends: 138 [2021-10-13 07:20:26,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:20:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-13 07:20:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 107. [2021-10-13 07:20:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.3655913978494623) internal successors, (127), 106 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2021-10-13 07:20:26,453 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 12 [2021-10-13 07:20:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:26,453 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2021-10-13 07:20:26,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2021-10-13 07:20:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:20:26,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:26,454 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:26,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:20:26,455 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash -74050540, now seen corresponding path program 1 times [2021-10-13 07:20:26,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:26,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781350984] [2021-10-13 07:20:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:26,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781350984] [2021-10-13 07:20:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781350984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:20:26,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543728906] [2021-10-13 07:20:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:26,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:20:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:20:26,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:20:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:20:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:20:26,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:26,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543728906] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:26,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:20:26,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [2] total 7 [2021-10-13 07:20:26,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766409862] [2021-10-13 07:20:26,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:20:26,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:20:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:26,760 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:26,862 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-10-13 07:20:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:20:26,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:20:26,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:26,864 INFO L225 Difference]: With dead ends: 164 [2021-10-13 07:20:26,864 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 07:20:26,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 07:20:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 94. [2021-10-13 07:20:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 93 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-10-13 07:20:26,873 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 12 [2021-10-13 07:20:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:26,873 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-10-13 07:20:26,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-10-13 07:20:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:20:26,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:26,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:26,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:27,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 07:20:27,104 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1480927317, now seen corresponding path program 1 times [2021-10-13 07:20:27,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:27,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44280965] [2021-10-13 07:20:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:27,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:27,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:27,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44280965] [2021-10-13 07:20:27,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44280965] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:27,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:27,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:20:27,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947666179] [2021-10-13 07:20:27,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:27,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:27,142 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:27,207 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2021-10-13 07:20:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:20:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:20:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:27,209 INFO L225 Difference]: With dead ends: 152 [2021-10-13 07:20:27,209 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 07:20:27,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 07:20:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 82. [2021-10-13 07:20:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-10-13 07:20:27,216 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 13 [2021-10-13 07:20:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:27,217 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-10-13 07:20:27,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-10-13 07:20:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:20:27,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:27,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:27,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:20:27,219 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash -588831840, now seen corresponding path program 1 times [2021-10-13 07:20:27,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:27,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887391469] [2021-10-13 07:20:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:27,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:27,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:27,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887391469] [2021-10-13 07:20:27,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887391469] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:27,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:27,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:20:27,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631151428] [2021-10-13 07:20:27,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:20:27,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:20:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:20:27,438 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:27,507 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2021-10-13 07:20:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:20:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:20:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:27,509 INFO L225 Difference]: With dead ends: 123 [2021-10-13 07:20:27,509 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 07:20:27,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 07:20:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-13 07:20:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 101 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-13 07:20:27,526 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 14 [2021-10-13 07:20:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-13 07:20:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2021-10-13 07:20:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:20:27,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:27,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:27,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:20:27,528 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1068294466, now seen corresponding path program 1 times [2021-10-13 07:20:27,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:27,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22990397] [2021-10-13 07:20:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:27,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:27,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:27,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22990397] [2021-10-13 07:20:27,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22990397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:27,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:27,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:27,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597215343] [2021-10-13 07:20:27,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:20:27,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:20:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:27,750 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:27,871 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2021-10-13 07:20:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:20:27,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:20:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:27,873 INFO L225 Difference]: With dead ends: 145 [2021-10-13 07:20:27,873 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 07:20:27,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 07:20:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2021-10-13 07:20:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 100 states have (on average 1.3) internal successors, (130), 107 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2021-10-13 07:20:27,884 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 16 [2021-10-13 07:20:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:27,885 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2021-10-13 07:20:27,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2021-10-13 07:20:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:20:27,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:27,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:27,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:20:27,887 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1242603005, now seen corresponding path program 1 times [2021-10-13 07:20:27,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:27,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368031661] [2021-10-13 07:20:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:27,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:28,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:28,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368031661] [2021-10-13 07:20:28,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368031661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:28,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:28,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:28,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446501109] [2021-10-13 07:20:28,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:20:28,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:20:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:20:28,066 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:28,132 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2021-10-13 07:20:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:20:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:20:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:28,134 INFO L225 Difference]: With dead ends: 144 [2021-10-13 07:20:28,135 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 07:20:28,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 07:20:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-13 07:20:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 101 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2021-10-13 07:20:28,149 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 17 [2021-10-13 07:20:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:28,149 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2021-10-13 07:20:28,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2021-10-13 07:20:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:20:28,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:28,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:28,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:20:28,151 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:28,152 INFO L82 PathProgramCache]: Analyzing trace with hash 875166188, now seen corresponding path program 1 times [2021-10-13 07:20:28,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:28,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158135627] [2021-10-13 07:20:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:28,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:28,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:28,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158135627] [2021-10-13 07:20:28,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158135627] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:28,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:28,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:20:28,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268025493] [2021-10-13 07:20:28,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:20:28,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:20:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:28,362 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:28,437 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2021-10-13 07:20:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:20:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:20:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:28,439 INFO L225 Difference]: With dead ends: 197 [2021-10-13 07:20:28,439 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 07:20:28,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 07:20:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2021-10-13 07:20:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.303921568627451) internal successors, (133), 109 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2021-10-13 07:20:28,451 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 18 [2021-10-13 07:20:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:28,452 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2021-10-13 07:20:28,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2021-10-13 07:20:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:20:28,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:28,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:28,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:20:28,454 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1311443055, now seen corresponding path program 1 times [2021-10-13 07:20:28,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:28,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545025585] [2021-10-13 07:20:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:28,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:28,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:28,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545025585] [2021-10-13 07:20:28,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545025585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:28,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:28,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:28,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671613416] [2021-10-13 07:20:28,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:20:28,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:20:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:28,616 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:28,733 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2021-10-13 07:20:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:20:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:20:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:28,735 INFO L225 Difference]: With dead ends: 198 [2021-10-13 07:20:28,735 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 07:20:28,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:20:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 07:20:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 118. [2021-10-13 07:20:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.309090909090909) internal successors, (144), 117 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2021-10-13 07:20:28,749 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 18 [2021-10-13 07:20:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:28,749 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2021-10-13 07:20:28,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2021-10-13 07:20:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:20:28,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:28,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:28,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:20:28,751 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1871348493, now seen corresponding path program 1 times [2021-10-13 07:20:28,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:28,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909812483] [2021-10-13 07:20:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:28,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:28,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:28,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909812483] [2021-10-13 07:20:28,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909812483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:28,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:28,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550022906] [2021-10-13 07:20:28,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:20:28,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:20:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:28,900 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:29,012 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2021-10-13 07:20:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:20:29,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 07:20:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:29,015 INFO L225 Difference]: With dead ends: 197 [2021-10-13 07:20:29,015 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 07:20:29,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 07:20:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 124. [2021-10-13 07:20:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 116 states have (on average 1.293103448275862) internal successors, (150), 123 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-10-13 07:20:29,028 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 20 [2021-10-13 07:20:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:29,029 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-10-13 07:20:29,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-10-13 07:20:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:20:29,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:29,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:29,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:20:29,030 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash 448962139, now seen corresponding path program 1 times [2021-10-13 07:20:29,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:29,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519637591] [2021-10-13 07:20:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:29,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:29,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:29,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519637591] [2021-10-13 07:20:29,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519637591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:29,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:29,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:20:29,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411222212] [2021-10-13 07:20:29,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:20:29,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:20:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:20:29,200 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:29,320 INFO L93 Difference]: Finished difference Result 222 states and 258 transitions. [2021-10-13 07:20:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:20:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 07:20:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:29,323 INFO L225 Difference]: With dead ends: 222 [2021-10-13 07:20:29,323 INFO L226 Difference]: Without dead ends: 221 [2021-10-13 07:20:29,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:20:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-13 07:20:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 140. [2021-10-13 07:20:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 132 states have (on average 1.2954545454545454) internal successors, (171), 139 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 171 transitions. [2021-10-13 07:20:29,339 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 171 transitions. Word has length 20 [2021-10-13 07:20:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:29,339 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 171 transitions. [2021-10-13 07:20:29,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 171 transitions. [2021-10-13 07:20:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:20:29,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:29,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:29,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 07:20:29,341 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2117745778, now seen corresponding path program 1 times [2021-10-13 07:20:29,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:29,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903200917] [2021-10-13 07:20:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:29,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:29,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:29,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903200917] [2021-10-13 07:20:29,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903200917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:29,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 07:20:29,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63336993] [2021-10-13 07:20:29,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:20:29,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:20:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:20:29,700 INFO L87 Difference]: Start difference. First operand 140 states and 171 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:30,482 INFO L93 Difference]: Finished difference Result 281 states and 312 transitions. [2021-10-13 07:20:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 07:20:30,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:20:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:30,484 INFO L225 Difference]: With dead ends: 281 [2021-10-13 07:20:30,484 INFO L226 Difference]: Without dead ends: 278 [2021-10-13 07:20:30,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 550.4ms TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:20:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-13 07:20:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 162. [2021-10-13 07:20:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 161 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 198 transitions. [2021-10-13 07:20:30,504 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 198 transitions. Word has length 21 [2021-10-13 07:20:30,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:30,504 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 198 transitions. [2021-10-13 07:20:30,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 198 transitions. [2021-10-13 07:20:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:20:30,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:30,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 07:20:30,508 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1225609994, now seen corresponding path program 1 times [2021-10-13 07:20:30,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:30,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751872712] [2021-10-13 07:20:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:30,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:20:30,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:20:30,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751872712] [2021-10-13 07:20:30,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751872712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:30,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:30,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 07:20:30,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624039393] [2021-10-13 07:20:30,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:20:30,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:20:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:20:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:20:30,864 INFO L87 Difference]: Start difference. First operand 162 states and 198 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:31,300 INFO L93 Difference]: Finished difference Result 235 states and 275 transitions. [2021-10-13 07:20:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:20:31,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:20:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:31,302 INFO L225 Difference]: With dead ends: 235 [2021-10-13 07:20:31,302 INFO L226 Difference]: Without dead ends: 229 [2021-10-13 07:20:31,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 283.0ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:20:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-13 07:20:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 168. [2021-10-13 07:20:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.2732919254658386) internal successors, (205), 167 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 205 transitions. [2021-10-13 07:20:31,321 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 205 transitions. Word has length 22 [2021-10-13 07:20:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:31,321 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 205 transitions. [2021-10-13 07:20:31,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 205 transitions. [2021-10-13 07:20:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:20:31,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:31,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:31,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 07:20:31,323 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-10-13 07:20:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:31,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1966763357, now seen corresponding path program 1 times [2021-10-13 07:20:31,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:20:31,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301679432] [2021-10-13 07:20:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:31,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:20:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:20:31,358 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:20:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:20:31,424 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:20:31,424 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:20:31,425 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:20:31,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 07:20:31,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:20:31,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:20:31 BoogieIcfgContainer [2021-10-13 07:20:31,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:20:31,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:20:31,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:20:31,518 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:20:31,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:24" (3/4) ... [2021-10-13 07:20:31,522 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:20:31,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:20:31,524 INFO L168 Benchmark]: Toolchain (without parser) took 9338.03 ms. Allocated memory was 132.1 MB in the beginning and 182.5 MB in the end (delta: 50.3 MB). Free memory was 96.2 MB in the beginning and 76.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,524 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:20:31,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.01 ms. Allocated memory is still 132.1 MB. Free memory was 96.0 MB in the beginning and 102.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.46 ms. Allocated memory is still 132.1 MB. Free memory was 102.2 MB in the beginning and 99.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,526 INFO L168 Benchmark]: Boogie Preprocessor took 72.86 ms. Allocated memory is still 132.1 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,527 INFO L168 Benchmark]: RCFGBuilder took 1459.52 ms. Allocated memory is still 132.1 MB. Free memory was 98.1 MB in the beginning and 56.1 MB in the end (delta: 42.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,527 INFO L168 Benchmark]: TraceAbstraction took 7209.17 ms. Allocated memory was 132.1 MB in the beginning and 182.5 MB in the end (delta: 50.3 MB). Free memory was 56.1 MB in the beginning and 76.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:31,528 INFO L168 Benchmark]: Witness Printer took 4.73 ms. Allocated memory is still 182.5 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:20:31,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.01 ms. Allocated memory is still 132.1 MB. Free memory was 96.0 MB in the beginning and 102.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.46 ms. Allocated memory is still 132.1 MB. Free memory was 102.2 MB in the beginning and 99.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.86 ms. Allocated memory is still 132.1 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1459.52 ms. Allocated memory is still 132.1 MB. Free memory was 98.1 MB in the beginning and 56.1 MB in the end (delta: 42.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7209.17 ms. Allocated memory was 132.1 MB in the beginning and 182.5 MB in the end (delta: 50.3 MB). Free memory was 56.1 MB in the beginning and 76.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.73 ms. Allocated memory is still 182.5 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 104]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] EXPR (int )(a >> 24U) - 128 [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] (int )(b >> 24U) - 128 - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 104]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 107]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 107]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: 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 1 procedures, 98 locations, 28 error locations. Started 1 CEGAR loops. OverallTime: 7045.5ms, OverallIterations: 21, TraceHistogramMax: 2, EmptinessCheckTime: 34.6ms, AutomataDifference: 3064.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1760 SDtfs, 2329 SDslu, 4015 SDs, 0 SdLazy, 1099 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1390.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1286.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=20, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 281.9ms AutomataMinimizationTime, 20 MinimizatonAttempts, 896 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.8ms SsaConstructionTime, 578.2ms SatisfiabilityAnalysisTime, 2278.2ms InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 22 InterpolantComputations, 21 PerfectInterpolantSequences, 4/6 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 [2021-10-13 07:20:31,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a51b40-4ac1-4e36-bb21-13780908d22a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...