./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/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 07:21:35,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:21:35,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:21:35,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:21:35,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:21:35,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:21:35,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:21:35,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:21:35,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:21:35,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:21:35,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:21:35,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:21:35,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:21:35,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:21:35,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:21:35,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:21:35,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:21:35,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:21:35,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:21:35,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:21:35,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:21:35,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:21:35,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:21:35,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:21:35,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:21:35,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:21:35,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:21:35,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:21:35,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:21:35,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:21:35,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:21:35,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:21:35,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:21:35,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:21:35,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:21:35,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:21:35,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:21:35,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:21:35,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:21:35,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:21:35,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:21:35,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:21:35,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:21:35,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:21:35,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:21:35,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:21:35,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:21:35,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:21:35,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:21:35,212 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:21:35,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:21:35,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:21:35,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:21:35,213 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:21:35,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:21:35,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:21:35,215 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:21:35,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:21:35,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:21:35,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:21:35,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:21:35,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:21:35,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:21:35,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:21:35,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:21:35,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:21:35,219 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:21:35,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:21:35,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:21:35,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:21:35,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:21:35,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:21:35,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:21:35,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:21:35,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:21:35,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:21:35,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:21:35,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:21:35,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:21:35,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:21:35,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:21:35,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:21:35,224 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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-10-13 07:21:35,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:21:35,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:21:35,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:21:35,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:21:35,518 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:21:35,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-13 07:21:35,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/data/6cce162e5/67422e5fc31d40f082639fdadf0b88c4/FLAG316ba8f46 [2021-10-13 07:21:36,070 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:21:36,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-13 07:21:36,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/data/6cce162e5/67422e5fc31d40f082639fdadf0b88c4/FLAG316ba8f46 [2021-10-13 07:21:36,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/data/6cce162e5/67422e5fc31d40f082639fdadf0b88c4 [2021-10-13 07:21:36,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:21:36,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:21:36,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:21:36,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:21:36,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:21:36,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7a8ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36, skipping insertion in model container [2021-10-13 07:21:36,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:21:36,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:21:36,665 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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-13 07:21:36,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:21:36,717 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:21:36,734 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_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-13 07:21:36,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:21:36,818 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:21:36,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36 WrapperNode [2021-10-13 07:21:36,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:21:36,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:21:36,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:21:36,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:21:36,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:21:36,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:21:36,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:21:36,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:21:36,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:21:36,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:21:36,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:21:36,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:21:36,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (1/1) ... [2021-10-13 07:21:36,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:21:36,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:21:36,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:21:37,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:21:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:21:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:21:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:21:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:21:37,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:21:37,893 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-13 07:21:37,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:37 BoogieIcfgContainer [2021-10-13 07:21:37,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:21:37,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:21:37,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:21:37,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:21:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:21:36" (1/3) ... [2021-10-13 07:21:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b2ebb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:37, skipping insertion in model container [2021-10-13 07:21:37,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:21:36" (2/3) ... [2021-10-13 07:21:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b2ebb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:37, skipping insertion in model container [2021-10-13 07:21:37,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:37" (3/3) ... [2021-10-13 07:21:37,905 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-13 07:21:37,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:21:37,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-13 07:21:37,961 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:21:37,967 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 07:21:37,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-13 07:21:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 81 states have (on average 1.8641975308641976) internal successors, (151), 119 states have internal predecessors, (151), 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 07:21:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:21:37,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:37,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:21:37,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:37,998 INFO L82 PathProgramCache]: Analyzing trace with hash 120809197, now seen corresponding path program 1 times [2021-10-13 07:21:38,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:38,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462266123] [2021-10-13 07:21:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:38,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:38,170 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 07:21:38,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:38,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462266123] [2021-10-13 07:21:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462266123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:38,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:38,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534307193] [2021-10-13 07:21:38,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:21:38,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:38,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:21:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:21:38,203 INFO L87 Difference]: Start difference. First operand has 120 states, 81 states have (on average 1.8641975308641976) internal successors, (151), 119 states have internal predecessors, (151), 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 07:21:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:38,236 INFO L93 Difference]: Finished difference Result 219 states and 277 transitions. [2021-10-13 07:21:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:21:38,238 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 07:21:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:38,247 INFO L225 Difference]: With dead ends: 219 [2021-10-13 07:21:38,247 INFO L226 Difference]: Without dead ends: 114 [2021-10-13 07:21:38,250 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 07:21:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-13 07:21:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-13 07:21:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 80 states have (on average 1.7) internal successors, (136), 113 states have internal predecessors, (136), 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 07:21:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2021-10-13 07:21:38,288 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 6 [2021-10-13 07:21:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:38,289 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2021-10-13 07:21:38,289 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 07:21:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2021-10-13 07:21:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:21:38,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:38,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:21:38,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:21:38,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash 119514283, now seen corresponding path program 1 times [2021-10-13 07:21:38,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:38,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761504482] [2021-10-13 07:21:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:38,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:38,337 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 07:21:38,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:38,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761504482] [2021-10-13 07:21:38,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761504482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:38,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:38,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:21:38,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010636535] [2021-10-13 07:21:38,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:21:38,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:21:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:38,342 INFO L87 Difference]: Start difference. First operand 114 states and 136 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 07:21:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:38,450 INFO L93 Difference]: Finished difference Result 225 states and 266 transitions. [2021-10-13 07:21:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:21:38,451 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 07:21:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:38,453 INFO L225 Difference]: With dead ends: 225 [2021-10-13 07:21:38,455 INFO L226 Difference]: Without dead ends: 127 [2021-10-13 07:21:38,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-13 07:21:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-10-13 07:21:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 125 states have internal predecessors, (149), 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 07:21:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2021-10-13 07:21:38,485 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 6 [2021-10-13 07:21:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:38,485 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2021-10-13 07:21:38,486 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 07:21:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2021-10-13 07:21:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:21:38,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:38,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:38,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:21:38,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 608448269, now seen corresponding path program 1 times [2021-10-13 07:21:38,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:38,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030834986] [2021-10-13 07:21:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:38,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:38,561 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 07:21:38,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:38,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030834986] [2021-10-13 07:21:38,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030834986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:38,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:38,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:38,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267579929] [2021-10-13 07:21:38,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:38,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:38,568 INFO L87 Difference]: Start difference. First operand 126 states and 149 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 07:21:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:38,708 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2021-10-13 07:21:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:38,708 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 07:21:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:38,713 INFO L225 Difference]: With dead ends: 187 [2021-10-13 07:21:38,714 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 07:21:38,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 07:21:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 127. [2021-10-13 07:21:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 126 states have internal predecessors, (151), 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 07:21:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2021-10-13 07:21:38,737 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 8 [2021-10-13 07:21:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:38,738 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2021-10-13 07:21:38,738 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 07:21:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2021-10-13 07:21:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:21:38,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:38,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:38,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:21:38,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:38,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1682027289, now seen corresponding path program 1 times [2021-10-13 07:21:38,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:38,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334559749] [2021-10-13 07:21:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:38,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:21:38,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:38,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334559749] [2021-10-13 07:21:38,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334559749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:38,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:38,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:38,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577577344] [2021-10-13 07:21:38,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:21:38,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:38,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:21:38,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:38,813 INFO L87 Difference]: Start difference. First operand 127 states and 151 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 07:21:38,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:38,898 INFO L93 Difference]: Finished difference Result 179 states and 207 transitions. [2021-10-13 07:21:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:21:38,898 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 07:21:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:38,900 INFO L225 Difference]: With dead ends: 179 [2021-10-13 07:21:38,900 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 07:21:38,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:21:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 07:21:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 119. [2021-10-13 07:21:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 118 states have internal predecessors, (143), 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 07:21:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2021-10-13 07:21:38,928 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 9 [2021-10-13 07:21:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:38,929 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2021-10-13 07:21:38,931 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 07:21:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2021-10-13 07:21:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:21:38,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:38,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:38,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:21:38,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:38,935 INFO L82 PathProgramCache]: Analyzing trace with hash -161805896, now seen corresponding path program 1 times [2021-10-13 07:21:38,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:38,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094585233] [2021-10-13 07:21:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:38,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,038 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 07:21:39,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094585233] [2021-10-13 07:21:39,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094585233] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:39,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:21:39,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076542746] [2021-10-13 07:21:39,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:39,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:39,041 INFO L87 Difference]: Start difference. First operand 119 states and 143 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 07:21:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:39,135 INFO L93 Difference]: Finished difference Result 242 states and 281 transitions. [2021-10-13 07:21:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:21:39,136 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 07:21:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:39,137 INFO L225 Difference]: With dead ends: 242 [2021-10-13 07:21:39,138 INFO L226 Difference]: Without dead ends: 190 [2021-10-13 07:21:39,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-13 07:21:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2021-10-13 07:21:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 128 states have (on average 1.5078125) internal successors, (193), 152 states have internal predecessors, (193), 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 07:21:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 193 transitions. [2021-10-13 07:21:39,162 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 193 transitions. Word has length 10 [2021-10-13 07:21:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:39,162 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 193 transitions. [2021-10-13 07:21:39,162 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 07:21:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 193 transitions. [2021-10-13 07:21:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:21:39,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:39,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:39,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:21:39,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -168160186, now seen corresponding path program 1 times [2021-10-13 07:21:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:39,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849585295] [2021-10-13 07:21:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,235 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 07:21:39,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849585295] [2021-10-13 07:21:39,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849585295] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:39,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:39,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615316783] [2021-10-13 07:21:39,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:39,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:39,244 INFO L87 Difference]: Start difference. First operand 153 states and 193 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 07:21:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:39,336 INFO L93 Difference]: Finished difference Result 233 states and 292 transitions. [2021-10-13 07:21:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:39,337 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 07:21:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:39,339 INFO L225 Difference]: With dead ends: 233 [2021-10-13 07:21:39,339 INFO L226 Difference]: Without dead ends: 231 [2021-10-13 07:21:39,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-13 07:21:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2021-10-13 07:21:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 159 states have internal predecessors, (201), 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 07:21:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-10-13 07:21:39,350 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 10 [2021-10-13 07:21:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:39,351 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-10-13 07:21:39,351 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 07:21:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-10-13 07:21:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:21:39,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:39,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:39,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:21:39,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1490686613, now seen corresponding path program 1 times [2021-10-13 07:21:39,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:39,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743675938] [2021-10-13 07:21:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,403 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 07:21:39,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743675938] [2021-10-13 07:21:39,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743675938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:39,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:39,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503224428] [2021-10-13 07:21:39,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:39,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:39,406 INFO L87 Difference]: Start difference. First operand 160 states and 201 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 07:21:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:39,482 INFO L93 Difference]: Finished difference Result 233 states and 287 transitions. [2021-10-13 07:21:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:39,483 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 07:21:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:39,485 INFO L225 Difference]: With dead ends: 233 [2021-10-13 07:21:39,485 INFO L226 Difference]: Without dead ends: 231 [2021-10-13 07:21:39,485 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 07:21:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-13 07:21:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 162. [2021-10-13 07:21:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.460431654676259) internal successors, (203), 161 states have internal predecessors, (203), 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 07:21:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2021-10-13 07:21:39,496 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 10 [2021-10-13 07:21:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:39,496 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2021-10-13 07:21:39,496 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 07:21:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2021-10-13 07:21:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:21:39,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:39,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:39,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:21:39,498 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:39,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1775136523, now seen corresponding path program 1 times [2021-10-13 07:21:39,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:39,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695529574] [2021-10-13 07:21:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,525 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 07:21:39,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695529574] [2021-10-13 07:21:39,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695529574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:39,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:39,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659034279] [2021-10-13 07:21:39,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:39,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:39,528 INFO L87 Difference]: Start difference. First operand 162 states and 203 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 07:21:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:39,610 INFO L93 Difference]: Finished difference Result 377 states and 466 transitions. [2021-10-13 07:21:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:39,610 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 07:21:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:39,612 INFO L225 Difference]: With dead ends: 377 [2021-10-13 07:21:39,612 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 07:21:39,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 07:21:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 167. [2021-10-13 07:21:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.4513888888888888) internal successors, (209), 166 states have internal predecessors, (209), 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 07:21:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 209 transitions. [2021-10-13 07:21:39,624 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 209 transitions. Word has length 11 [2021-10-13 07:21:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:39,625 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 209 transitions. [2021-10-13 07:21:39,625 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 07:21:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 209 transitions. [2021-10-13 07:21:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:21:39,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:39,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:39,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:21:39,627 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:39,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1800694034, now seen corresponding path program 1 times [2021-10-13 07:21:39,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:39,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406658898] [2021-10-13 07:21:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,654 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 07:21:39,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406658898] [2021-10-13 07:21:39,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406658898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:39,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:21:39,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440442646] [2021-10-13 07:21:39,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:39,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:39,657 INFO L87 Difference]: Start difference. First operand 167 states and 209 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 07:21:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:39,729 INFO L93 Difference]: Finished difference Result 249 states and 305 transitions. [2021-10-13 07:21:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:39,730 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 07:21:39,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:39,731 INFO L225 Difference]: With dead ends: 249 [2021-10-13 07:21:39,732 INFO L226 Difference]: Without dead ends: 247 [2021-10-13 07:21:39,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-13 07:21:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 172. [2021-10-13 07:21:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.42) internal successors, (213), 171 states have internal predecessors, (213), 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 07:21:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2021-10-13 07:21:39,745 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 12 [2021-10-13 07:21:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:39,745 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2021-10-13 07:21:39,745 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 07:21:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2021-10-13 07:21:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:21:39,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:39,746 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:39,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:21:39,747 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:39,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash -813309285, now seen corresponding path program 1 times [2021-10-13 07:21:39,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:39,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701924262] [2021-10-13 07:21:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,794 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 07:21:39,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701924262] [2021-10-13 07:21:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701924262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:21:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231645164] [2021-10-13 07:21:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:39,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:21:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:21:39,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:21:39,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:21:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:39,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:21:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:21:39,946 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 07:21:39,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:21:39,999 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 07:21:39,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231645164] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:39,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:21:39,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [2] total 7 [2021-10-13 07:21:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037476731] [2021-10-13 07:21:40,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:40,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:21:40,007 INFO L87 Difference]: Start difference. First operand 172 states and 213 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 07:21:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:40,116 INFO L93 Difference]: Finished difference Result 337 states and 405 transitions. [2021-10-13 07:21:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:40,117 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 07:21:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:40,119 INFO L225 Difference]: With dead ends: 337 [2021-10-13 07:21:40,119 INFO L226 Difference]: Without dead ends: 334 [2021-10-13 07:21:40,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:21:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-10-13 07:21:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 155. [2021-10-13 07:21:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 136 states have (on average 1.411764705882353) internal successors, (192), 154 states have internal predecessors, (192), 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 07:21:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2021-10-13 07:21:40,138 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 12 [2021-10-13 07:21:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:40,139 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2021-10-13 07:21:40,139 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 07:21:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2021-10-13 07:21:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:21:40,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:40,140 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:40,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:21:40,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:21:40,367 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash 936530270, now seen corresponding path program 1 times [2021-10-13 07:21:40,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:40,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44032994] [2021-10-13 07:21:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:40,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:40,410 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 07:21:40,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:40,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44032994] [2021-10-13 07:21:40,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44032994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:40,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:40,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:21:40,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760756706] [2021-10-13 07:21:40,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:21:40,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:21:40,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:40,412 INFO L87 Difference]: Start difference. First operand 155 states and 192 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 07:21:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:40,483 INFO L93 Difference]: Finished difference Result 298 states and 361 transitions. [2021-10-13 07:21:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:40,484 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 07:21:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:40,486 INFO L225 Difference]: With dead ends: 298 [2021-10-13 07:21:40,486 INFO L226 Difference]: Without dead ends: 295 [2021-10-13 07:21:40,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:21:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-13 07:21:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 140. [2021-10-13 07:21:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 124 states have (on average 1.4193548387096775) internal successors, (176), 139 states have internal predecessors, (176), 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 07:21:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2021-10-13 07:21:40,499 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 13 [2021-10-13 07:21:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:40,499 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2021-10-13 07:21:40,499 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 07:21:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2021-10-13 07:21:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:21:40,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:40,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:40,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:21:40,501 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash 409591337, now seen corresponding path program 1 times [2021-10-13 07:21:40,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:40,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630623973] [2021-10-13 07:21:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:40,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:40,592 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 07:21:40,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630623973] [2021-10-13 07:21:40,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630623973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:40,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:40,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:40,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010472872] [2021-10-13 07:21:40,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:40,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:40,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:40,597 INFO L87 Difference]: Start difference. First operand 140 states and 176 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 07:21:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:40,696 INFO L93 Difference]: Finished difference Result 173 states and 201 transitions. [2021-10-13 07:21:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:40,697 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 07:21:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:40,698 INFO L225 Difference]: With dead ends: 173 [2021-10-13 07:21:40,698 INFO L226 Difference]: Without dead ends: 172 [2021-10-13 07:21:40,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-13 07:21:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2021-10-13 07:21:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 139 states have internal predecessors, (175), 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 07:21:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 175 transitions. [2021-10-13 07:21:40,711 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 175 transitions. Word has length 14 [2021-10-13 07:21:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:40,711 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 175 transitions. [2021-10-13 07:21:40,711 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 07:21:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 175 transitions. [2021-10-13 07:21:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:21:40,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:40,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:40,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 07:21:40,714 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:40,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1519707605, now seen corresponding path program 1 times [2021-10-13 07:21:40,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:40,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013147405] [2021-10-13 07:21:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:40,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:40,809 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 07:21:40,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:40,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013147405] [2021-10-13 07:21:40,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013147405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:40,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:40,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:21:40,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724557541] [2021-10-13 07:21:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:40,812 INFO L87 Difference]: Start difference. First operand 140 states and 175 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 07:21:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:40,905 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2021-10-13 07:21:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:21:40,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 07:21:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:40,907 INFO L225 Difference]: With dead ends: 175 [2021-10-13 07:21:40,907 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 07:21:40,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 07:21:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 108. [2021-10-13 07:21:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.4130434782608696) 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 07:21:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2021-10-13 07:21:40,918 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 16 [2021-10-13 07:21:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:40,919 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2021-10-13 07:21:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 07:21:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2021-10-13 07:21:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:21:40,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:40,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:21:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 07:21:40,921 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2086688279, now seen corresponding path program 1 times [2021-10-13 07:21:40,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:40,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210276789] [2021-10-13 07:21:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:40,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:41,092 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 07:21:41,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:41,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210276789] [2021-10-13 07:21:41,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210276789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:41,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:41,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:21:41,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502401634] [2021-10-13 07:21:41,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:41,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:41,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:41,096 INFO L87 Difference]: Start difference. First operand 108 states and 130 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 07:21:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:41,196 INFO L93 Difference]: Finished difference Result 133 states and 155 transitions. [2021-10-13 07:21:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:41,197 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 07:21:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:41,198 INFO L225 Difference]: With dead ends: 133 [2021-10-13 07:21:41,199 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 07:21:41,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 07:21:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2021-10-13 07:21:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 111 states have internal predecessors, (134), 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 07:21:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2021-10-13 07:21:41,213 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 16 [2021-10-13 07:21:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:41,213 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2021-10-13 07:21:41,214 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 07:21:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2021-10-13 07:21:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:21:41,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:41,215 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 07:21:41,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 07:21:41,215 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash -442279751, now seen corresponding path program 1 times [2021-10-13 07:21:41,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:41,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946118589] [2021-10-13 07:21:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:41,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:41,369 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 07:21:41,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:41,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946118589] [2021-10-13 07:21:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946118589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:41,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:41,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:21:41,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155204489] [2021-10-13 07:21:41,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:41,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:41,375 INFO L87 Difference]: Start difference. First operand 112 states and 134 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 07:21:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:41,520 INFO L93 Difference]: Finished difference Result 298 states and 338 transitions. [2021-10-13 07:21:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:41,520 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 07:21:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:41,522 INFO L225 Difference]: With dead ends: 298 [2021-10-13 07:21:41,522 INFO L226 Difference]: Without dead ends: 273 [2021-10-13 07:21:41,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-13 07:21:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 120. [2021-10-13 07:21:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 119 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 07:21:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2021-10-13 07:21:41,539 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 18 [2021-10-13 07:21:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:41,539 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2021-10-13 07:21:41,539 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 07:21:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2021-10-13 07:21:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:21:41,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:41,540 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 07:21:41,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 07:21:41,541 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash 211784602, now seen corresponding path program 1 times [2021-10-13 07:21:41,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:41,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094168965] [2021-10-13 07:21:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:41,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:41,694 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 07:21:41,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:41,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094168965] [2021-10-13 07:21:41,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094168965] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:41,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:41,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:21:41,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665162346] [2021-10-13 07:21:41,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:21:41,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:21:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:41,697 INFO L87 Difference]: Start difference. First operand 120 states and 144 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 07:21:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:41,828 INFO L93 Difference]: Finished difference Result 272 states and 311 transitions. [2021-10-13 07:21:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:21:41,829 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 07:21:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:41,831 INFO L225 Difference]: With dead ends: 272 [2021-10-13 07:21:41,831 INFO L226 Difference]: Without dead ends: 271 [2021-10-13 07:21:41,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-13 07:21:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 132. [2021-10-13 07:21:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 131 states have internal predecessors, (159), 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 07:21:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2021-10-13 07:21:41,846 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 18 [2021-10-13 07:21:41,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:41,846 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-10-13 07:21:41,847 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 07:21:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2021-10-13 07:21:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:21:41,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:41,848 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 07:21:41,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 07:21:41,848 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1666421192, now seen corresponding path program 1 times [2021-10-13 07:21:41,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:41,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465556803] [2021-10-13 07:21:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:41,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:41,947 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 07:21:41,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:41,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465556803] [2021-10-13 07:21:41,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465556803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:41,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:41,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:21:41,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414868172] [2021-10-13 07:21:41,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:21:41,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:41,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:21:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:41,950 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 07:21:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:42,096 INFO L93 Difference]: Finished difference Result 295 states and 333 transitions. [2021-10-13 07:21:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:21:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 07:21:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:42,098 INFO L225 Difference]: With dead ends: 295 [2021-10-13 07:21:42,099 INFO L226 Difference]: Without dead ends: 270 [2021-10-13 07:21:42,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:21:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-13 07:21:42,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 138. [2021-10-13 07:21:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 137 states have internal predecessors, (165), 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 07:21:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2021-10-13 07:21:42,114 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 20 [2021-10-13 07:21:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:42,115 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2021-10-13 07:21:42,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 07:21:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2021-10-13 07:21:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:21:42,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:42,116 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 07:21:42,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 07:21:42,116 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:42,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1159866435, now seen corresponding path program 1 times [2021-10-13 07:21:42,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:42,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003763527] [2021-10-13 07:21:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:42,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:42,230 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 07:21:42,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:42,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003763527] [2021-10-13 07:21:42,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003763527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:42,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:42,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:21:42,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108647969] [2021-10-13 07:21:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:42,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:42,234 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 07:21:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:42,296 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2021-10-13 07:21:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:21:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 07:21:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:42,299 INFO L225 Difference]: With dead ends: 159 [2021-10-13 07:21:42,299 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 07:21:42,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 07:21:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-10-13 07:21:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.353448275862069) internal successors, (157), 131 states have internal predecessors, (157), 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 07:21:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2021-10-13 07:21:42,312 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 20 [2021-10-13 07:21:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:42,312 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2021-10-13 07:21:42,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 07:21:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2021-10-13 07:21:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:21:42,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:42,314 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 07:21:42,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 07:21:42,314 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1813930788, now seen corresponding path program 1 times [2021-10-13 07:21:42,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:42,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668803054] [2021-10-13 07:21:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:42,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:42,465 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 07:21:42,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:42,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668803054] [2021-10-13 07:21:42,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668803054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:42,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:42,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:21:42,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793953114] [2021-10-13 07:21:42,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:21:42,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:21:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:21:42,469 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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 07:21:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:42,571 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2021-10-13 07:21:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:21:42,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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 07:21:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:42,573 INFO L225 Difference]: With dead ends: 181 [2021-10-13 07:21:42,573 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 07:21:42,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:21:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 07:21:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2021-10-13 07:21:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.353448275862069) internal successors, (157), 131 states have internal predecessors, (157), 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 07:21:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2021-10-13 07:21:42,586 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 20 [2021-10-13 07:21:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:42,586 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2021-10-13 07:21:42,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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 07:21:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2021-10-13 07:21:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:21:42,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:42,589 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 07:21:42,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 07:21:42,590 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:42,590 INFO L82 PathProgramCache]: Analyzing trace with hash -31601502, now seen corresponding path program 1 times [2021-10-13 07:21:42,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:42,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131468638] [2021-10-13 07:21:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:42,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:42,896 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 07:21:42,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:42,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131468638] [2021-10-13 07:21:42,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131468638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:42,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:42,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 07:21:42,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560685394] [2021-10-13 07:21:42,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:21:42,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:21:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:21:42,898 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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 07:21:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:43,895 INFO L93 Difference]: Finished difference Result 307 states and 338 transitions. [2021-10-13 07:21:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 07:21:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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 07:21:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:43,898 INFO L225 Difference]: With dead ends: 307 [2021-10-13 07:21:43,898 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 07:21:43,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 481.2ms TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:21:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 07:21:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 140. [2021-10-13 07:21:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 139 states have internal predecessors, (169), 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 07:21:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-10-13 07:21:43,913 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 21 [2021-10-13 07:21:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:43,914 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-10-13 07:21:43,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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 07:21:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-10-13 07:21:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:43,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:43,915 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 07:21:43,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 07:21:43,916 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -979646273, now seen corresponding path program 1 times [2021-10-13 07:21:43,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:43,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811812313] [2021-10-13 07:21:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:43,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:44,316 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 07:21:44,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:44,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811812313] [2021-10-13 07:21:44,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811812313] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:44,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:44,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:21:44,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640937244] [2021-10-13 07:21:44,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:21:44,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:21:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:21:44,319 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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 07:21:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:44,966 INFO L93 Difference]: Finished difference Result 260 states and 301 transitions. [2021-10-13 07:21:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:21:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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 07:21:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:44,969 INFO L225 Difference]: With dead ends: 260 [2021-10-13 07:21:44,969 INFO L226 Difference]: Without dead ends: 256 [2021-10-13 07:21:44,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 164.0ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:21:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-13 07:21:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 142. [2021-10-13 07:21:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 128 states have (on average 1.3359375) internal successors, (171), 141 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 07:21:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2021-10-13 07:21:44,985 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 22 [2021-10-13 07:21:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:44,985 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2021-10-13 07:21:44,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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 07:21:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2021-10-13 07:21:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:44,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:44,986 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 07:21:44,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 07:21:44,987 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1572276942, now seen corresponding path program 1 times [2021-10-13 07:21:44,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:44,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751888201] [2021-10-13 07:21:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:44,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:21:45,138 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 07:21:45,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:21:45,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751888201] [2021-10-13 07:21:45,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751888201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:21:45,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:21:45,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:21:45,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896365795] [2021-10-13 07:21:45,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:21:45,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:21:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:21:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:21:45,140 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 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 07:21:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:21:45,571 INFO L93 Difference]: Finished difference Result 276 states and 311 transitions. [2021-10-13 07:21:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:21:45,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 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 07:21:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:21:45,574 INFO L225 Difference]: With dead ends: 276 [2021-10-13 07:21:45,574 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 07:21:45,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 245.4ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:21:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 07:21:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 148. [2021-10-13 07:21:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 134 states have (on average 1.328358208955224) internal successors, (178), 147 states have internal predecessors, (178), 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 07:21:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 178 transitions. [2021-10-13 07:21:45,606 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 178 transitions. Word has length 22 [2021-10-13 07:21:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:21:45,606 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 178 transitions. [2021-10-13 07:21:45,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 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 07:21:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 178 transitions. [2021-10-13 07:21:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:21:45,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:21:45,607 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 07:21:45,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 07:21:45,608 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-13 07:21:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:21:45,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1577149754, now seen corresponding path program 1 times [2021-10-13 07:21:45,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:21:45,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519690650] [2021-10-13 07:21:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:21:45,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:21:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:21:45,625 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:21:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:21:45,659 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:21:45,660 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:21:45,661 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:21:45,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 07:21:45,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:21:45,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:21:45 BoogieIcfgContainer [2021-10-13 07:21:45,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:21:45,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:21:45,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:21:45,707 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:21:45,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:37" (3/4) ... [2021-10-13 07:21:45,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:21:45,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:21:45,712 INFO L168 Benchmark]: Toolchain (without parser) took 9274.44 ms. Allocated memory was 100.7 MB in the beginning and 153.1 MB in the end (delta: 52.4 MB). Free memory was 66.0 MB in the beginning and 108.1 MB in the end (delta: -42.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,712 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:21:45,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.61 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 72.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,713 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.49 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 69.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,714 INFO L168 Benchmark]: Boogie Preprocessor took 58.06 ms. Allocated memory is still 100.7 MB. Free memory was 69.5 MB in the beginning and 67.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,714 INFO L168 Benchmark]: RCFGBuilder took 943.90 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.7 MB in the beginning and 88.4 MB in the end (delta: -20.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,714 INFO L168 Benchmark]: TraceAbstraction took 7808.31 ms. Allocated memory was 121.6 MB in the beginning and 153.1 MB in the end (delta: 31.5 MB). Free memory was 87.9 MB in the beginning and 108.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:21:45,715 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 153.1 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:21:45,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.61 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 72.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.49 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 69.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.06 ms. Allocated memory is still 100.7 MB. Free memory was 69.5 MB in the beginning and 67.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 943.90 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.7 MB in the beginning and 88.4 MB in the end (delta: -20.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7808.31 ms. Allocated memory was 121.6 MB in the beginning and 153.1 MB in the end (delta: 31.5 MB). Free memory was 87.9 MB in the beginning and 108.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.93 ms. Allocated memory is still 153.1 MB. Free memory is still 108.1 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_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] 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); [L234] 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); [L235] b = base2flt(mb, eb) [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. - 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: 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, 120 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 7712.5ms, OverallIterations: 23, TraceHistogramMax: 2, EmptinessCheckTime: 32.7ms, AutomataDifference: 4062.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2897 SDtfs, 3873 SDslu, 6489 SDs, 0 SdLazy, 2097 SolverSat, 289 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1996.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1342.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=9, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 355.7ms AutomataMinimizationTime, 22 MinimizatonAttempts, 1727 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.7ms SsaConstructionTime, 457.8ms SatisfiabilityAnalysisTime, 2103.4ms InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 314 ConstructedInterpolants, 0 QuantifiedInterpolants, 1424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 24 InterpolantComputations, 23 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 07:21:45,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b8e3493-f939-43de-bde5-e7c66dfd8c9f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...