./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE --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 f3c1180c9a62a526e14707a53f6241040f30a5e80067331f257ba2c03c44647c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 11:06:24,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:06:24,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:06:24,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:06:24,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:06:24,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:06:24,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:06:24,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:06:24,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:06:24,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:06:24,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:06:24,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:06:24,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:06:24,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:06:24,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:06:24,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:06:24,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:06:24,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:06:24,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:06:24,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:06:24,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:06:24,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:06:24,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:06:24,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:06:24,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:06:24,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:06:24,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:06:24,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:06:24,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:06:24,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:06:24,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:06:24,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:06:24,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:06:24,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:06:24,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:06:24,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:06:24,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:06:24,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:06:24,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:06:24,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:06:24,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:06:24,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 11:06:24,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:06:24,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:06:24,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:06:24,483 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:06:24,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:06:24,484 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:06:24,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:06:24,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:06:24,485 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:06:24,485 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:06:24,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:06:24,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:06:24,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 11:06:24,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:06:24,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:06:24,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:06:24,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:06:24,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:06:24,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:06:24,488 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 11:06:24,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:06:24,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:06:24,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:06:24,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:06:24,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:06:24,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:06:24,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:24,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:06:24,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:06:24,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:06:24,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:06:24,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:06:24,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:06:24,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:06:24,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:06:24,491 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_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3c1180c9a62a526e14707a53f6241040f30a5e80067331f257ba2c03c44647c [2021-10-24 11:06:24,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:06:24,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:06:24,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:06:24,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:06:24,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:06:24,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-10-24 11:06:24,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/data/ed3810847/ae774d50c90349e2ac1274c311944d0c/FLAG518e05e47 [2021-10-24 11:06:25,360 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:06:25,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-10-24 11:06:25,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/data/ed3810847/ae774d50c90349e2ac1274c311944d0c/FLAG518e05e47 [2021-10-24 11:06:25,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/data/ed3810847/ae774d50c90349e2ac1274c311944d0c [2021-10-24 11:06:25,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:06:25,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:06:25,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:25,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:06:25,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:06:25,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:25" (1/1) ... [2021-10-24 11:06:25,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c6055c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:25, skipping insertion in model container [2021-10-24 11:06:25,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:25" (1/1) ... [2021-10-24 11:06:25,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:06:25,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:06:25,965 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_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[422,435] [2021-10-24 11:06:26,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:26,025 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:06:26,044 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_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[422,435] [2021-10-24 11:06:26,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:26,122 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:06:26,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26 WrapperNode [2021-10-24 11:06:26,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:26,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:26,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:06:26,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:06:26,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:26,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:06:26,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:06:26,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:06:26,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:06:26,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:06:26,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:06:26,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:06:26,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (1/1) ... [2021-10-24 11:06:26,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:26,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:26,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:06:26,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:06:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:06:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:06:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:06:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:06:27,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:06:27,113 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-24 11:06:27,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:27 BoogieIcfgContainer [2021-10-24 11:06:27,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:06:27,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:06:27,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:06:27,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:06:27,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:06:25" (1/3) ... [2021-10-24 11:06:27,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d668ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:27, skipping insertion in model container [2021-10-24 11:06:27,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:26" (2/3) ... [2021-10-24 11:06:27,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d668ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:27, skipping insertion in model container [2021-10-24 11:06:27,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:27" (3/3) ... [2021-10-24 11:06:27,124 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2021-10-24 11:06:27,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:06:27,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-10-24 11:06:27,192 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:06:27,198 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:06:27,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-10-24 11:06:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 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) [2021-10-24 11:06:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 11:06:27,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:27,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 11:06:27,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash 636155057, now seen corresponding path program 1 times [2021-10-24 11:06:27,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:27,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662880784] [2021-10-24 11:06:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:27,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:27,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:27,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662880784] [2021-10-24 11:06:27,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662880784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:27,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:27,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:27,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911935348] [2021-10-24 11:06:27,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:06:27,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:06:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:06:27,427 INFO L87 Difference]: Start difference. First operand has 142 states, 95 states have (on average 1.8842105263157896) internal successors, (179), 141 states have internal predecessors, (179), 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) [2021-10-24 11:06:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:27,482 INFO L93 Difference]: Finished difference Result 265 states and 333 transitions. [2021-10-24 11:06:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:06:27,484 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 [2021-10-24 11:06:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:27,500 INFO L225 Difference]: With dead ends: 265 [2021-10-24 11:06:27,501 INFO L226 Difference]: Without dead ends: 138 [2021-10-24 11:06:27,505 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 [2021-10-24 11:06:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-24 11:06:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-24 11:06:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.7234042553191489) internal successors, (162), 137 states have internal predecessors, (162), 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) [2021-10-24 11:06:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2021-10-24 11:06:27,563 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 6 [2021-10-24 11:06:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:27,563 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2021-10-24 11:06:27,564 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) [2021-10-24 11:06:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2021-10-24 11:06:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 11:06:27,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:27,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 11:06:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:06:27,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash 634839001, now seen corresponding path program 1 times [2021-10-24 11:06:27,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:27,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086233984] [2021-10-24 11:06:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:27,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:27,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:27,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086233984] [2021-10-24 11:06:27,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086233984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:27,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:27,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 11:06:27,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067061253] [2021-10-24 11:06:27,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:06:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:06:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:27,658 INFO L87 Difference]: Start difference. First operand 138 states and 162 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) [2021-10-24 11:06:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:27,847 INFO L93 Difference]: Finished difference Result 288 states and 342 transitions. [2021-10-24 11:06:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:06:27,848 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 [2021-10-24 11:06:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:27,853 INFO L225 Difference]: With dead ends: 288 [2021-10-24 11:06:27,853 INFO L226 Difference]: Without dead ends: 168 [2021-10-24 11:06:27,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-24 11:06:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2021-10-24 11:06:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 120 states have (on average 1.5833333333333333) internal successors, (190), 163 states have internal predecessors, (190), 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) [2021-10-24 11:06:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 190 transitions. [2021-10-24 11:06:27,880 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 190 transitions. Word has length 6 [2021-10-24 11:06:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:27,881 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 190 transitions. [2021-10-24 11:06:27,881 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) [2021-10-24 11:06:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 190 transitions. [2021-10-24 11:06:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 11:06:27,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:27,883 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:27,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:06:27,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash -804054398, now seen corresponding path program 1 times [2021-10-24 11:06:27,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:27,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370799861] [2021-10-24 11:06:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:27,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:27,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:27,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370799861] [2021-10-24 11:06:27,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370799861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:27,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:27,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:27,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815144667] [2021-10-24 11:06:27,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:06:27,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:06:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:27,961 INFO L87 Difference]: Start difference. First operand 164 states and 190 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-10-24 11:06:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,010 INFO L93 Difference]: Finished difference Result 289 states and 334 transitions. [2021-10-24 11:06:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:06:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2021-10-24 11:06:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,012 INFO L225 Difference]: With dead ends: 289 [2021-10-24 11:06:28,012 INFO L226 Difference]: Without dead ends: 127 [2021-10-24 11:06:28,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-24 11:06:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-24 11:06:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.6043956043956045) internal successors, (146), 126 states have internal predecessors, (146), 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) [2021-10-24 11:06:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2021-10-24 11:06:28,020 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 9 [2021-10-24 11:06:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,021 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2021-10-24 11:06:28,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-10-24 11:06:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2021-10-24 11:06:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:06:28,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 11:06:28,023 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,023 INFO L82 PathProgramCache]: Analyzing trace with hash -164912703, now seen corresponding path program 1 times [2021-10-24 11:06:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354969269] [2021-10-24 11:06:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354969269] [2021-10-24 11:06:28,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354969269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:28,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870230695] [2021-10-24 11:06:28,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:28,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,101 INFO L87 Difference]: Start difference. First operand 127 states and 146 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) [2021-10-24 11:06:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,215 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2021-10-24 11:06:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:28,216 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 [2021-10-24 11:06:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,232 INFO L225 Difference]: With dead ends: 178 [2021-10-24 11:06:28,232 INFO L226 Difference]: Without dead ends: 171 [2021-10-24 11:06:28,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:06:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-24 11:06:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2021-10-24 11:06:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.5257731958762886) internal successors, (148), 127 states have internal predecessors, (148), 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) [2021-10-24 11:06:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-10-24 11:06:28,240 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 10 [2021-10-24 11:06:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,241 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-10-24 11:06:28,241 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) [2021-10-24 11:06:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-10-24 11:06:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 11:06:28,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 11:06:28,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash -817326280, now seen corresponding path program 1 times [2021-10-24 11:06:28,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656877878] [2021-10-24 11:06:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656877878] [2021-10-24 11:06:28,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656877878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:28,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803651546] [2021-10-24 11:06:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:06:28,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:06:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:28,276 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2021-10-24 11:06:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,351 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-10-24 11:06:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:06:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2021-10-24 11:06:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,353 INFO L225 Difference]: With dead ends: 169 [2021-10-24 11:06:28,353 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 11:06:28,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 11:06:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 123. [2021-10-24 11:06:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 96 states have (on average 1.5) internal successors, (144), 122 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) [2021-10-24 11:06:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2021-10-24 11:06:28,361 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 11 [2021-10-24 11:06:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,361 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2021-10-24 11:06:28,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2021-10-24 11:06:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2021-10-24 11:06:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 11:06:28,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 11:06:28,363 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1476576937, now seen corresponding path program 1 times [2021-10-24 11:06:28,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012795165] [2021-10-24 11:06:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012795165] [2021-10-24 11:06:28,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012795165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:06:28,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284553430] [2021-10-24 11:06:28,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:06:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:06:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:28,409 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 3 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) [2021-10-24 11:06:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,449 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-10-24 11:06:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:06:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-10-24 11:06:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,451 INFO L225 Difference]: With dead ends: 211 [2021-10-24 11:06:28,451 INFO L226 Difference]: Without dead ends: 107 [2021-10-24 11:06:28,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:06:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-24 11:06:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-24 11:06:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 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) [2021-10-24 11:06:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-10-24 11:06:28,457 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 11 [2021-10-24 11:06:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,457 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-10-24 11:06:28,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-24 11:06:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-10-24 11:06:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 11:06:28,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 11:06:28,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1809585668, now seen corresponding path program 1 times [2021-10-24 11:06:28,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308183559] [2021-10-24 11:06:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308183559] [2021-10-24 11:06:28,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308183559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:06:28,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886815864] [2021-10-24 11:06:28,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:28,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:28,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,496 INFO L87 Difference]: Start difference. First operand 105 states and 120 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) [2021-10-24 11:06:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,583 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2021-10-24 11:06:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:28,584 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 [2021-10-24 11:06:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,585 INFO L225 Difference]: With dead ends: 240 [2021-10-24 11:06:28,585 INFO L226 Difference]: Without dead ends: 153 [2021-10-24 11:06:28,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-24 11:06:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 115. [2021-10-24 11:06:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 89 states have (on average 1.4831460674157304) internal successors, (132), 114 states have internal predecessors, (132), 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) [2021-10-24 11:06:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2021-10-24 11:06:28,597 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 13 [2021-10-24 11:06:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,597 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2021-10-24 11:06:28,598 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) [2021-10-24 11:06:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2021-10-24 11:06:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 11:06:28,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 11:06:28,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,602 INFO L82 PathProgramCache]: Analyzing trace with hash -262580676, now seen corresponding path program 1 times [2021-10-24 11:06:28,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830759643] [2021-10-24 11:06:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830759643] [2021-10-24 11:06:28,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830759643] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:06:28,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443249221] [2021-10-24 11:06:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,672 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-10-24 11:06:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,752 INFO L93 Difference]: Finished difference Result 150 states and 167 transitions. [2021-10-24 11:06:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:28,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 [2021-10-24 11:06:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,754 INFO L225 Difference]: With dead ends: 150 [2021-10-24 11:06:28,755 INFO L226 Difference]: Without dead ends: 149 [2021-10-24 11:06:28,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-24 11:06:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2021-10-24 11:06:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 113 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) [2021-10-24 11:06:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-10-24 11:06:28,760 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 14 [2021-10-24 11:06:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,761 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-10-24 11:06:28,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-24 11:06:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-10-24 11:06:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 11:06:28,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,762 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:28,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 11:06:28,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1771692285, now seen corresponding path program 1 times [2021-10-24 11:06:28,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065685440] [2021-10-24 11:06:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 11:06:28,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065685440] [2021-10-24 11:06:28,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065685440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:06:28,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171448671] [2021-10-24 11:06:28,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:28,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,795 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:28,886 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2021-10-24 11:06:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 [2021-10-24 11:06:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:28,888 INFO L225 Difference]: With dead ends: 202 [2021-10-24 11:06:28,888 INFO L226 Difference]: Without dead ends: 196 [2021-10-24 11:06:28,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-24 11:06:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 117. [2021-10-24 11:06:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.446808510638298) internal successors, (136), 116 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) [2021-10-24 11:06:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-10-24 11:06:28,895 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 18 [2021-10-24 11:06:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:28,895 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-10-24 11:06:28,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-10-24 11:06:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-10-24 11:06:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 11:06:28,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:28,896 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, 1] [2021-10-24 11:06:28,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 11:06:28,897 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1645079183, now seen corresponding path program 1 times [2021-10-24 11:06:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:28,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88742474] [2021-10-24 11:06:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:28,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:28,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:28,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88742474] [2021-10-24 11:06:28,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88742474] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:28,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:28,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 11:06:28,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235587349] [2021-10-24 11:06:28,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:28,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:28,966 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-10-24 11:06:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:29,038 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2021-10-24 11:06:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-10-24 11:06:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:29,040 INFO L225 Difference]: With dead ends: 219 [2021-10-24 11:06:29,040 INFO L226 Difference]: Without dead ends: 119 [2021-10-24 11:06:29,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-24 11:06:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-10-24 11:06:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 116 states have internal predecessors, (135), 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) [2021-10-24 11:06:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2021-10-24 11:06:29,047 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 23 [2021-10-24 11:06:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2021-10-24 11:06:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-10-24 11:06:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2021-10-24 11:06:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 11:06:29,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:29,052 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:29,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-24 11:06:29,052 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 320591046, now seen corresponding path program 1 times [2021-10-24 11:06:29,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:29,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408331458] [2021-10-24 11:06:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:29,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:29,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:29,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408331458] [2021-10-24 11:06:29,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408331458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:29,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521674987] [2021-10-24 11:06:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:29,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:29,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:29,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:29,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:06:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:29,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:06:29,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:29,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:29,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521674987] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:29,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740228304] [2021-10-24 11:06:29,568 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-24 11:06:29,568 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:29,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:29,585 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:29,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:29,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,663 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:29,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:29,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:29,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:29,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:29,704 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-24 11:06:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:29,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:29,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:29,747 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:29,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:29,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:29,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:29,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:29,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:29,799 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:29,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:29,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:29,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:29,827 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:29,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:29,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:29,877 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:29,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:06:29,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:29,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:29,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,069 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:30,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-10-24 11:06:30,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,235 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:30,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:30,247 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:30,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:30,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:30,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,554 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:30,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:30,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-24 11:06:30,627 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:30,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:06:30,652 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-10-24 11:06:30,661 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:30,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:06:30,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:06:30,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-24 11:06:30,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:30,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-10-24 11:06:30,699 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:33,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1740228304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:33,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:33,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 22 [2021-10-24 11:06:33,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358943030] [2021-10-24 11:06:33,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 11:06:33,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 11:06:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-24 11:06:33,114 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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) [2021-10-24 11:06:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:34,175 INFO L93 Difference]: Finished difference Result 215 states and 243 transitions. [2021-10-24 11:06:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 11:06:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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 25 [2021-10-24 11:06:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:34,178 INFO L225 Difference]: With dead ends: 215 [2021-10-24 11:06:34,178 INFO L226 Difference]: Without dead ends: 178 [2021-10-24 11:06:34,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2858.4ms TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-10-24 11:06:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-24 11:06:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2021-10-24 11:06:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 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) [2021-10-24 11:06:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-10-24 11:06:34,188 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-10-24 11:06:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:34,189 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-10-24 11:06:34,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 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) [2021-10-24 11:06:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-10-24 11:06:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 11:06:34,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:34,190 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:34,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:34,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-24 11:06:34,419 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:34,419 INFO L82 PathProgramCache]: Analyzing trace with hash -577545220, now seen corresponding path program 1 times [2021-10-24 11:06:34,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:34,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97726820] [2021-10-24 11:06:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:34,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:34,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97726820] [2021-10-24 11:06:34,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97726820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:34,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544929163] [2021-10-24 11:06:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:34,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:34,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:34,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:34,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:06:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:34,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:06:34,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:34,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544929163] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:34,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873268550] [2021-10-24 11:06:34,704 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-24 11:06:34,704 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:34,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:34,705 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:34,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:34,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:34,737 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:34,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:34,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:34,746 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-24 11:06:34,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:34,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:34,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:34,762 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:34,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:34,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:34,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:34,803 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:34,812 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:34,813 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:34,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:34,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:34,837 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:34,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:06:34,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:34,925 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:34,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:06:34,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,033 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:35,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:35,044 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:35,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:35,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:35,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,284 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:06:35,334 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-10-24 11:06:35,340 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:35,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:35,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:06:35,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:06:35,353 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-10-24 11:06:35,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:06:35,360 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:37,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [873268550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:37,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:37,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 22 [2021-10-24 11:06:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552651917] [2021-10-24 11:06:37,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 11:06:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 11:06:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-24 11:06:37,484 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2021-10-24 11:06:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:38,324 INFO L93 Difference]: Finished difference Result 151 states and 178 transitions. [2021-10-24 11:06:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 11:06:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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 25 [2021-10-24 11:06:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:38,326 INFO L225 Difference]: With dead ends: 151 [2021-10-24 11:06:38,326 INFO L226 Difference]: Without dead ends: 149 [2021-10-24 11:06:38,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2464.9ms TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-10-24 11:06:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-24 11:06:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 136. [2021-10-24 11:06:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 135 states have internal predecessors, (162), 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) [2021-10-24 11:06:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2021-10-24 11:06:38,336 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 25 [2021-10-24 11:06:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:38,336 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2021-10-24 11:06:38,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2021-10-24 11:06:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2021-10-24 11:06:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 11:06:38,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:38,337 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:38,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:38,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-24 11:06:38,563 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1233044798, now seen corresponding path program 1 times [2021-10-24 11:06:38,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:38,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709330529] [2021-10-24 11:06:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:38,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:38,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:38,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709330529] [2021-10-24 11:06:38,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709330529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:38,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474640788] [2021-10-24 11:06:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:38,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:38,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:38,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 11:06:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:38,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:06:38,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:38,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:38,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474640788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:38,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493917428] [2021-10-24 11:06:38,867 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 11:06:38,867 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:38,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:38,868 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:38,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:38,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:38,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:38,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:38,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:38,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:38,886 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-10-24 11:06:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:38,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:38,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:38,900 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:38,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:38,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:38,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:38,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:38,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:38,933 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:38,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:38,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:38,942 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:38,942 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:38,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:38,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:38,971 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:38,975 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-10-24 11:06:38,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:38,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,058 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:39,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:06:39,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,160 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:39,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:39,173 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:39,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:39,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:39,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:39,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:39,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:39,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:39,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:39,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:06:39,521 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-10-24 11:06:39,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:39,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:39,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:06:39,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:06:39,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:39,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-24 11:06:39,553 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.0 percent of original size [2021-10-24 11:06:39,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-24 11:06:39,558 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:41,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1493917428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:41,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:41,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5, 5] total 24 [2021-10-24 11:06:41,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461744907] [2021-10-24 11:06:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 11:06:41,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 11:06:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-24 11:06:41,858 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2021-10-24 11:06:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:43,045 INFO L93 Difference]: Finished difference Result 254 states and 281 transitions. [2021-10-24 11:06:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 11:06:43,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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 26 [2021-10-24 11:06:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:43,049 INFO L225 Difference]: With dead ends: 254 [2021-10-24 11:06:43,049 INFO L226 Difference]: Without dead ends: 251 [2021-10-24 11:06:43,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2663.9ms TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-10-24 11:06:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-24 11:06:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 138. [2021-10-24 11:06:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.4260869565217391) internal successors, (164), 137 states have internal predecessors, (164), 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) [2021-10-24 11:06:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2021-10-24 11:06:43,060 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 26 [2021-10-24 11:06:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:43,060 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2021-10-24 11:06:43,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2021-10-24 11:06:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2021-10-24 11:06:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 11:06:43,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:43,062 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:43,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:43,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-24 11:06:43,287 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:43,287 INFO L82 PathProgramCache]: Analyzing trace with hash -724032373, now seen corresponding path program 1 times [2021-10-24 11:06:43,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:43,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328906687] [2021-10-24 11:06:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:43,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:43,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:43,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328906687] [2021-10-24 11:06:43,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328906687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:43,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808137050] [2021-10-24 11:06:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:43,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:43,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:43,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:43,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 11:06:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:43,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:06:43,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:43,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808137050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:43,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183165795] [2021-10-24 11:06:43,642 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 11:06:43,642 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:43,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:43,643 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:43,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:43,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,654 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:43,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:43,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:43,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:43,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:43,661 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-10-24 11:06:43,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:43,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:43,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:43,674 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:43,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:43,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:43,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:43,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:43,702 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:43,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:43,711 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:43,711 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:43,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:43,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:43,740 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:43,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:06:43,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,821 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:43,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:06:43,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,910 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:43,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:43,919 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:43,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:43,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:43,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:44,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:44,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:44,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:44,151 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:44,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:44,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:06:44,170 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-10-24 11:06:44,175 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:44,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:44,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:06:44,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:06:44,188 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-10-24 11:06:44,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:06:44,198 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:46,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:46,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:46,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-10-24 11:06:46,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676424622] [2021-10-24 11:06:46,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 11:06:46,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 11:06:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-24 11:06:46,598 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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) [2021-10-24 11:06:46,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:46,737 INFO L93 Difference]: Finished difference Result 326 states and 381 transitions. [2021-10-24 11:06:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:06:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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 26 [2021-10-24 11:06:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:46,741 INFO L225 Difference]: With dead ends: 326 [2021-10-24 11:06:46,741 INFO L226 Difference]: Without dead ends: 217 [2021-10-24 11:06:46,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2427.0ms TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-24 11:06:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-24 11:06:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 158. [2021-10-24 11:06:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 135 states have (on average 1.3925925925925926) internal successors, (188), 157 states have internal predecessors, (188), 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) [2021-10-24 11:06:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2021-10-24 11:06:46,754 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 26 [2021-10-24 11:06:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:46,754 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2021-10-24 11:06:46,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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) [2021-10-24 11:06:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2021-10-24 11:06:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 11:06:46,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:46,755 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:46,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:46,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:46,975 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1594430024, now seen corresponding path program 1 times [2021-10-24 11:06:46,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:46,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275566148] [2021-10-24 11:06:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:46,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:47,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:47,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275566148] [2021-10-24 11:06:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275566148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:47,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184366383] [2021-10-24 11:06:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:47,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:47,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:47,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 11:06:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:47,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 11:06:47,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:06:47,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:06:47,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184366383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:47,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 11:06:47,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5] total 11 [2021-10-24 11:06:47,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316856042] [2021-10-24 11:06:47,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:06:47,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:06:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-24 11:06:47,436 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-10-24 11:06:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:47,576 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2021-10-24 11:06:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 11:06:47,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 28 [2021-10-24 11:06:47,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:47,580 INFO L225 Difference]: With dead ends: 225 [2021-10-24 11:06:47,580 INFO L226 Difference]: Without dead ends: 186 [2021-10-24 11:06:47,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-24 11:06:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-24 11:06:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2021-10-24 11:06:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 157 states have (on average 1.3694267515923566) internal successors, (215), 179 states have internal predecessors, (215), 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) [2021-10-24 11:06:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 215 transitions. [2021-10-24 11:06:47,593 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 215 transitions. Word has length 28 [2021-10-24 11:06:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:47,593 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 215 transitions. [2021-10-24 11:06:47,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-10-24 11:06:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 215 transitions. [2021-10-24 11:06:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 11:06:47,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:47,595 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:47,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:47,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:47,815 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1599074310, now seen corresponding path program 1 times [2021-10-24 11:06:47,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:47,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429313686] [2021-10-24 11:06:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:47,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:06:47,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:47,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429313686] [2021-10-24 11:06:47,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429313686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:47,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:47,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:47,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530976854] [2021-10-24 11:06:47,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:47,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:47,851 INFO L87 Difference]: Start difference. First operand 180 states and 215 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:06:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:47,923 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2021-10-24 11:06:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:47,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 28 [2021-10-24 11:06:47,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:47,925 INFO L225 Difference]: With dead ends: 232 [2021-10-24 11:06:47,925 INFO L226 Difference]: Without dead ends: 230 [2021-10-24 11:06:47,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:06:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-24 11:06:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 182. [2021-10-24 11:06:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 160 states have (on average 1.35) internal successors, (216), 181 states have internal predecessors, (216), 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) [2021-10-24 11:06:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2021-10-24 11:06:47,938 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 28 [2021-10-24 11:06:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:47,939 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2021-10-24 11:06:47,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:06:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2021-10-24 11:06:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 11:06:47,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:47,940 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:47,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-10-24 11:06:47,940 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:47,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1802333480, now seen corresponding path program 1 times [2021-10-24 11:06:47,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:47,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480116704] [2021-10-24 11:06:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:47,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:06:47,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:47,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480116704] [2021-10-24 11:06:47,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480116704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:06:47,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:06:47,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:06:47,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550780704] [2021-10-24 11:06:47,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:06:47,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:06:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:06:47,968 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:06:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:48,043 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-10-24 11:06:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:06:48,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 28 [2021-10-24 11:06:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:48,045 INFO L225 Difference]: With dead ends: 225 [2021-10-24 11:06:48,045 INFO L226 Difference]: Without dead ends: 222 [2021-10-24 11:06:48,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:06:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-24 11:06:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 168. [2021-10-24 11:06:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 167 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:06:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-10-24 11:06:48,059 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 28 [2021-10-24 11:06:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:48,060 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-10-24 11:06:48,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:06:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-10-24 11:06:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-24 11:06:48,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:48,061 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:48,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-10-24 11:06:48,061 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash 39856601, now seen corresponding path program 1 times [2021-10-24 11:06:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:48,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091362191] [2021-10-24 11:06:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:48,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:48,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:48,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091362191] [2021-10-24 11:06:48,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091362191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:48,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439909589] [2021-10-24 11:06:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:48,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:48,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:48,115 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:48,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 11:06:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:48,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 11:06:48,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:48,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:48,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439909589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:48,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [828271032] [2021-10-24 11:06:48,529 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-10-24 11:06:48,529 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:48,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:48,529 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:48,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:48,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:48,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:48,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:48,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:48,545 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 11:06:48,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:48,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:48,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:48,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:48,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:48,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:48,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:48,587 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:48,594 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:48,594 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:48,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:48,618 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:48,622 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-10-24 11:06:48,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,680 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:48,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:06:48,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,756 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:48,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:48,764 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:48,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:48,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:48,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:48,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-24 11:06:48,898 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-10-24 11:06:48,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:48,910 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-10-24 11:06:48,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-24 11:06:48,918 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:51,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:51,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:51,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-10-24 11:06:51,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237800365] [2021-10-24 11:06:51,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 11:06:51,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 11:06:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-24 11:06:51,131 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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) [2021-10-24 11:06:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:51,447 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2021-10-24 11:06:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:06:51,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 29 [2021-10-24 11:06:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:51,452 INFO L225 Difference]: With dead ends: 290 [2021-10-24 11:06:51,452 INFO L226 Difference]: Without dead ends: 169 [2021-10-24 11:06:51,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2460.5ms TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-10-24 11:06:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-24 11:06:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-10-24 11:06:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.3020134228187918) internal successors, (194), 167 states have internal predecessors, (194), 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) [2021-10-24 11:06:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2021-10-24 11:06:51,466 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 29 [2021-10-24 11:06:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:51,466 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2021-10-24 11:06:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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) [2021-10-24 11:06:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2021-10-24 11:06:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-24 11:06:51,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:51,468 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:51,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:51,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-24 11:06:51,695 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:51,695 INFO L82 PathProgramCache]: Analyzing trace with hash 573127627, now seen corresponding path program 2 times [2021-10-24 11:06:51,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:51,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964684605] [2021-10-24 11:06:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:51,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:51,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:51,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964684605] [2021-10-24 11:06:51,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964684605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:51,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662075158] [2021-10-24 11:06:51,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 11:06:51,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:51,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:51,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:51,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-24 11:06:51,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-24 11:06:51,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:06:51,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 11:06:51,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:52,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:52,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662075158] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:52,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662188383] [2021-10-24 11:06:52,302 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 11:06:52,302 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:52,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:52,302 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:52,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:52,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,314 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:52,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:52,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:52,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:52,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:52,323 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-24 11:06:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:52,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:52,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:52,335 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:52,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,339 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:52,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:52,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:52,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:52,364 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:52,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:52,371 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:52,371 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:52,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:52,399 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:52,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:06:52,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,484 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:52,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-10-24 11:06:52,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,561 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:52,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:52,573 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:52,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:52,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:52,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,724 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:52,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,761 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:52,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:06:52,778 INFO L185 QuantifierPusher]: treesize reduction 36, result has 89.3 percent of original size 302 [2021-10-24 11:06:52,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:52,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:52,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:06:52,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:06:52,800 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-10-24 11:06:52,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:06:52,812 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:55,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:55,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:55,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-10-24 11:06:55,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810430410] [2021-10-24 11:06:55,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 11:06:55,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 11:06:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-10-24 11:06:55,058 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-10-24 11:06:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:06:55,263 INFO L93 Difference]: Finished difference Result 415 states and 480 transitions. [2021-10-24 11:06:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 11:06:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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 46 [2021-10-24 11:06:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:06:55,266 INFO L225 Difference]: With dead ends: 415 [2021-10-24 11:06:55,266 INFO L226 Difference]: Without dead ends: 291 [2021-10-24 11:06:55,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2341.3ms TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-10-24 11:06:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-24 11:06:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 208. [2021-10-24 11:06:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 207 states have internal predecessors, (242), 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) [2021-10-24 11:06:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 242 transitions. [2021-10-24 11:06:55,282 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 242 transitions. Word has length 46 [2021-10-24 11:06:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:06:55,283 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 242 transitions. [2021-10-24 11:06:55,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-10-24 11:06:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 242 transitions. [2021-10-24 11:06:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-24 11:06:55,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:55,284 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:06:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-24 11:06:55,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:55,501 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:06:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1912654489, now seen corresponding path program 2 times [2021-10-24 11:06:55,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:55,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48268733] [2021-10-24 11:06:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:55,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:06:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:55,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:06:55,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48268733] [2021-10-24 11:06:55,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48268733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:06:55,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935908264] [2021-10-24 11:06:55,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 11:06:55,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:06:55,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:55,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:06:55,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-24 11:06:55,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-24 11:06:55,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:06:55,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-24 11:06:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:06:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:56,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:06:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:06:56,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935908264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:06:56,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2082138643] [2021-10-24 11:06:56,813 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-10-24 11:06:56,814 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:06:56,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:06:56,814 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:06:56,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:06:56,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,823 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:56,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:06:56,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:06:56,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:06:56,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:06:56,829 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-10-24 11:06:56,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:06:56,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:56,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:06:56,844 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:56,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:56,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:06:56,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:06:56,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:56,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:06:56,878 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:06:56,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:56,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:06:56,885 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:06:56,885 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:06:56,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:56,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:06:56,907 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:06:56,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:06:56,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:56,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:56,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:56,967 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:06:56,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:06:56,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,052 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:57,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:57,066 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:06:57,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:06:57,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:06:57,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:06:57,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-24 11:06:57,185 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-10-24 11:06:57,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:06:57,197 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-10-24 11:06:57,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-24 11:06:57,203 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:06:59,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:06:59,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:06:59,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-10-24 11:06:59,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49814559] [2021-10-24 11:06:59,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 11:06:59,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:06:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 11:06:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-10-24 11:06:59,687 INFO L87 Difference]: Start difference. First operand 208 states and 242 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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) [2021-10-24 11:07:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:07:17,174 INFO L93 Difference]: Finished difference Result 330 states and 385 transitions. [2021-10-24 11:07:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 11:07:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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 49 [2021-10-24 11:07:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:07:17,176 INFO L225 Difference]: With dead ends: 330 [2021-10-24 11:07:17,176 INFO L226 Difference]: Without dead ends: 209 [2021-10-24 11:07:17,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 19331.6ms TimeCoverageRelationStatistics Valid=294, Invalid=1186, Unknown=2, NotChecked=0, Total=1482 [2021-10-24 11:07:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-24 11:07:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-10-24 11:07:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 207 states have internal predecessors, (234), 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) [2021-10-24 11:07:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2021-10-24 11:07:17,189 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 49 [2021-10-24 11:07:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:07:17,189 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2021-10-24 11:07:17,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 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) [2021-10-24 11:07:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2021-10-24 11:07:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-24 11:07:17,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:07:17,191 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:07:17,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:07:17,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2021-10-24 11:07:17,395 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:07:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:07:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash -176223669, now seen corresponding path program 3 times [2021-10-24 11:07:17,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:07:17,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686375627] [2021-10-24 11:07:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:17,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:07:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:07:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:17,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:07:17,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686375627] [2021-10-24 11:07:17,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686375627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:07:17,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603634153] [2021-10-24 11:07:17,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 11:07:17,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:17,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:07:17,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:07:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-24 11:07:17,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 11:07:17,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:07:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-24 11:07:17,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:07:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:18,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:07:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603634153] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:07:18,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [78832369] [2021-10-24 11:07:18,568 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-24 11:07:18,568 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:07:18,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:07:18,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:07:18,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:07:18,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,576 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:07:18,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:07:18,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:07:18,583 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-10-24 11:07:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:07:18,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:18,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:18,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:18,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:07:18,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:18,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:18,627 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:07:18,634 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:18,634 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:07:18,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:07:18,662 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:07:18,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-24 11:07:18,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,729 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:07:18,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:07:18,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,811 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:07:18,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:07:18,818 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:07:18,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:07:18,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:18,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,943 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-24 11:07:18,983 INFO L185 QuantifierPusher]: treesize reduction 75, result has 70.6 percent of original size 180 [2021-10-24 11:07:18,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:18,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:18,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-24 11:07:18,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-24 11:07:19,000 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.1 percent of original size [2021-10-24 11:07:19,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-24 11:07:19,007 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:07:21,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:07:21,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:07:21,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-10-24 11:07:21,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580099327] [2021-10-24 11:07:21,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-24 11:07:21,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:07:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-24 11:07:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-10-24 11:07:21,392 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 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) [2021-10-24 11:07:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:07:21,693 INFO L93 Difference]: Finished difference Result 543 states and 624 transitions. [2021-10-24 11:07:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-24 11:07:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 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 86 [2021-10-24 11:07:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:07:21,696 INFO L225 Difference]: With dead ends: 543 [2021-10-24 11:07:21,696 INFO L226 Difference]: Without dead ends: 419 [2021-10-24 11:07:21,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2744.7ms TimeCoverageRelationStatistics Valid=699, Invalid=1463, Unknown=0, NotChecked=0, Total=2162 [2021-10-24 11:07:21,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-10-24 11:07:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 288. [2021-10-24 11:07:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.2267657992565055) internal successors, (330), 287 states have internal predecessors, (330), 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) [2021-10-24 11:07:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 330 transitions. [2021-10-24 11:07:21,720 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 330 transitions. Word has length 86 [2021-10-24 11:07:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:07:21,722 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 330 transitions. [2021-10-24 11:07:21,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 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) [2021-10-24 11:07:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 330 transitions. [2021-10-24 11:07:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-24 11:07:21,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:07:21,723 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:07:21,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:07:21,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:21,935 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:07:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:07:21,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1066767335, now seen corresponding path program 3 times [2021-10-24 11:07:21,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:07:21,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258622592] [2021-10-24 11:07:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:07:21,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:07:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:07:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:22,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:07:22,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258622592] [2021-10-24 11:07:22,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258622592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:07:22,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392043692] [2021-10-24 11:07:22,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 11:07:22,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:07:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:07:22,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:07:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-24 11:07:22,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 11:07:22,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:07:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-24 11:07:22,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:07:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:07:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:07:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392043692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:07:24,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [346384210] [2021-10-24 11:07:24,123 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-10-24 11:07:24,123 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:07:24,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:07:24,124 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:07:24,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:07:24,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:24,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:07:24,132 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:07:24,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:07:24,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 11:07:24,137 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 11:07:24,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 11:07:24,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:24,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:07:24,151 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:24,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:07:24,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:07:24,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:24,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:07:24,186 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:07:24,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-24 11:07:24,191 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 11:07:24,191 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:119 [2021-10-24 11:07:24,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-24 11:07:24,210 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.2 percent of original size [2021-10-24 11:07:24,212 INFO L185 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size 137 [2021-10-24 11:07:24,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,253 INFO L180 QuantifierPusher]: treesize reduction 9, result has 97.7 percent of original size [2021-10-24 11:07:24,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 386 [2021-10-24 11:07:24,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,305 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:07:24,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:07:24,313 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-10-24 11:07:24,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-24 11:07:24,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:07:24,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:07:24,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-24 11:07:24,451 INFO L180 QuantifierPusher]: treesize reduction 8, result has 92.3 percent of original size [2021-10-24 11:07:24,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-24 11:07:24,459 INFO L180 QuantifierPusher]: treesize reduction 8, result has 89.7 percent of original size [2021-10-24 11:07:24,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-24 11:07:24,466 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:07:27,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:07:27,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:07:27,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2021-10-24 11:07:27,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935839417] [2021-10-24 11:07:27,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-24 11:07:27,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:07:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-24 11:07:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1948, Unknown=0, NotChecked=0, Total=2352 [2021-10-24 11:07:27,711 INFO L87 Difference]: Start difference. First operand 288 states and 330 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 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) [2021-10-24 11:07:37,229 WARN L207 SmtUtils]: Spent 8.55 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2021-10-24 11:07:52,848 WARN L207 SmtUtils]: Spent 12.86 s on a formula simplification. DAG size of input: 34 DAG size of output: 10 [2021-10-24 11:08:59,336 WARN L207 SmtUtils]: Spent 24.95 s on a formula simplification. DAG size of input: 62 DAG size of output: 18 [2021-10-24 11:09:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:09:00,410 INFO L93 Difference]: Finished difference Result 410 states and 473 transitions. [2021-10-24 11:09:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-24 11:09:00,411 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 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 89 [2021-10-24 11:09:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:09:00,413 INFO L225 Difference]: With dead ends: 410 [2021-10-24 11:09:00,413 INFO L226 Difference]: Without dead ends: 289 [2021-10-24 11:09:00,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 216 SyntacticMatches, 19 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 95378.0ms TimeCoverageRelationStatistics Valid=711, Invalid=2699, Unknown=12, NotChecked=0, Total=3422 [2021-10-24 11:09:00,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-24 11:09:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-10-24 11:09:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 269 states have (on average 1.1895910780669146) internal successors, (320), 287 states have internal predecessors, (320), 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) [2021-10-24 11:09:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 320 transitions. [2021-10-24 11:09:00,433 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 320 transitions. Word has length 89 [2021-10-24 11:09:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:09:00,433 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 320 transitions. [2021-10-24 11:09:00,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 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) [2021-10-24 11:09:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 320 transitions. [2021-10-24 11:09:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-24 11:09:00,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:09:00,435 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:09:00,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:09:00,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2021-10-24 11:09:00,647 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-24 11:09:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:09:00,647 INFO L82 PathProgramCache]: Analyzing trace with hash 113322489, now seen corresponding path program 4 times [2021-10-24 11:09:00,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:09:00,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140770138] [2021-10-24 11:09:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:09:00,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:09:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:09:00,686 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:09:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:09:00,759 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:09:00,759 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:09:00,760 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 11:09:00,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-10-24 11:09:00,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:09:00,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:09:00 BoogieIcfgContainer [2021-10-24 11:09:00,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:09:00,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:09:00,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:09:00,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:09:00,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:27" (3/4) ... [2021-10-24 11:09:00,875 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:09:00,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:09:00,876 INFO L168 Benchmark]: Toolchain (without parser) took 155118.45 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 93.3 MB in the beginning and 105.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,876 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:09:00,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.94 ms. Allocated memory is still 125.8 MB. Free memory was 93.3 MB in the beginning and 99.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.18 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 96.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,877 INFO L168 Benchmark]: Boogie Preprocessor took 59.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.5 MB in the beginning and 94.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,877 INFO L168 Benchmark]: RCFGBuilder took 860.26 ms. Allocated memory is still 125.8 MB. Free memory was 94.4 MB in the beginning and 64.5 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,877 INFO L168 Benchmark]: TraceAbstraction took 153753.52 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 64.0 MB in the beginning and 105.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:09:00,877 INFO L168 Benchmark]: Witness Printer took 3.74 ms. Allocated memory is still 195.0 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:09:00,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.94 ms. Allocated memory is still 125.8 MB. Free memory was 93.3 MB in the beginning and 99.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.18 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 96.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.5 MB in the beginning and 94.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 860.26 ms. Allocated memory is still 125.8 MB. Free memory was 94.4 MB in the beginning and 64.5 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 153753.52 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 64.0 MB in the beginning and 105.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.74 ms. Allocated memory is still 195.0 MB. Free memory is still 105.5 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: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 69, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sa ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] EXPR (e + 128) << 24U [L69] res = m | (unsigned int )((e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 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 FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] (e + 128) << 24U - 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: 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: 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: 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: 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: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: 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, 142 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 153581.5ms, OverallIterations: 23, TraceHistogramMax: 24, EmptinessCheckTime: 30.8ms, AutomataDifference: 115528.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2617 SDtfs, 2511 SDslu, 6958 SDs, 0 SdLazy, 4549 SolverSat, 386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5180.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 1014 SyntacticMatches, 53 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 132824.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=21, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 278.9ms AutomataMinimizationTime, 22 MinimizatonAttempts, 795 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 145.8ms SsaConstructionTime, 648.1ms SatisfiabilityAnalysisTime, 6188.4ms InterpolantComputationTime, 1174 NumberOfCodeBlocks, 1174 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1422 ConstructedInterpolants, 0 QuantifiedInterpolants, 5627 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1347 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 42 InterpolantComputations, 14 PerfectInterpolantSequences, 25/3453 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: OVERALL_TIME[ms]: 2479, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 57, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 107, TOOLS_POST_TIME[ms]: 957, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME[ms]: 927, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 186, FLUID_QUERY_TIME[ms]: 11, FLUID_QUERIES: 186, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME[ms]: 753, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 522, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME[ms]: 32, DOMAIN_ISBOTTOM_APPLICATIONS: 57, DOMAIN_ISBOTTOM_TIME[ms]: 95, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 791, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 791, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 42, DAG_COMPRESSION_PROCESSED_NODES: 1095, DAG_COMPRESSION_RETAINED_NODES: 155, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 11:09:00,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcec58a-c317-4fa8-bed2-8312a7c64f9a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...