./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:18:44,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:44,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:44,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:44,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:44,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:44,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:44,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:44,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:44,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:44,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:44,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:44,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:44,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:44,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:44,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:44,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:44,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:44,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:44,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:44,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:44,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:44,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:44,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:44,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:44,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:44,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:44,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:44,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:44,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:44,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:44,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:44,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:44,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:44,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:44,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:44,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:44,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:44,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:44,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:44,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:44,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:18:44,283 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:44,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:44,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:44,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:44,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:44,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:44,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:44,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:44,287 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:44,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:18:44,289 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:44,289 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:44,290 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:18:44,290 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:18:44,290 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:44,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:18:44,291 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:18:44,291 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:18:44,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:44,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:18:44,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:18:44,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:18:44,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:18:44,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:44,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:44,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:44,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:44,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:18:44,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:18:44,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:44,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:44,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:44,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:44,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:44,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:44,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:44,299 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:18:44,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:44,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:44,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:18:44,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:18:44,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:44,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:44,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-03 02:18:44,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:44,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:44,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:44,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:44,690 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:44,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-03 02:18:44,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/data/2e5effad2/eb0bbf0c102f42f7900e4643b6a6a29c/FLAGb402356a6 [2022-11-03 02:18:45,525 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:45,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-03 02:18:45,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/data/2e5effad2/eb0bbf0c102f42f7900e4643b6a6a29c/FLAGb402356a6 [2022-11-03 02:18:45,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/data/2e5effad2/eb0bbf0c102f42f7900e4643b6a6a29c [2022-11-03 02:18:45,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:45,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:45,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:45,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:45,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:45,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:45" (1/1) ... [2022-11-03 02:18:45,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258894a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:45, skipping insertion in model container [2022-11-03 02:18:45,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:45" (1/1) ... [2022-11-03 02:18:45,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:45,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:46,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-03 02:18:46,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:46,280 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:46,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-03 02:18:46,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:46,392 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:46,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46 WrapperNode [2022-11-03 02:18:46,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:46,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:46,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:46,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:46,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,464 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2022-11-03 02:18:46,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:46,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:46,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:46,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:46,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,499 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:46,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:46,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:46,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:46,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (1/1) ... [2022-11-03 02:18:46,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:46,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:46,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:18:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:18:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 02:18:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 02:18:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:18:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:18:46,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:46,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:47,312 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:47,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:47,513 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:18:47,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:47 BoogieIcfgContainer [2022-11-03 02:18:47,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:47,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:47,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:47,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:47,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:45" (1/3) ... [2022-11-03 02:18:47,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299e270d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:47, skipping insertion in model container [2022-11-03 02:18:47,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:46" (2/3) ... [2022-11-03 02:18:47,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299e270d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:47, skipping insertion in model container [2022-11-03 02:18:47,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:47" (3/3) ... [2022-11-03 02:18:47,541 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-03 02:18:47,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:47,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-03 02:18:47,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:47,700 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@592f2310, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:47,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-03 02:18:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 02:18:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:18:47,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:47,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:47,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1095152428, now seen corresponding path program 1 times [2022-11-03 02:18:47,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:47,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848713967] [2022-11-03 02:18:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:47,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:47,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848713967] [2022-11-03 02:18:47,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848713967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:47,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:47,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:18:47,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318954179] [2022-11-03 02:18:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:18:48,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:18:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:48,060 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:48,165 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2022-11-03 02:18:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:18:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:18:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:48,187 INFO L225 Difference]: With dead ends: 138 [2022-11-03 02:18:48,187 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 02:18:48,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:48,198 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:48,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 02:18:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-03 02:18:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 56 states have internal predecessors, (63), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-03 02:18:48,273 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 8 [2022-11-03 02:18:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:48,275 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-03 02:18:48,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-03 02:18:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:18:48,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:48,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:48,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:18:48,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1096247454, now seen corresponding path program 1 times [2022-11-03 02:18:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:48,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79584384] [2022-11-03 02:18:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:48,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79584384] [2022-11-03 02:18:48,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79584384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897243517] [2022-11-03 02:18:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:48,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:48,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:48,419 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:48,535 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2022-11-03 02:18:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:18:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:48,540 INFO L225 Difference]: With dead ends: 160 [2022-11-03 02:18:48,540 INFO L226 Difference]: Without dead ends: 100 [2022-11-03 02:18:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:48,543 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:48,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 167 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-03 02:18:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2022-11-03 02:18:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.5) internal successors, (105), 85 states have internal predecessors, (105), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-11-03 02:18:48,559 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 8 [2022-11-03 02:18:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:48,559 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-11-03 02:18:48,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,560 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-11-03 02:18:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 02:18:48,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:48,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:18:48,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2147158935, now seen corresponding path program 1 times [2022-11-03 02:18:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507809545] [2022-11-03 02:18:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:48,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:48,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507809545] [2022-11-03 02:18:48,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507809545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:48,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:48,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159062150] [2022-11-03 02:18:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:48,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:48,727 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:48,878 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2022-11-03 02:18:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 02:18:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:48,881 INFO L225 Difference]: With dead ends: 108 [2022-11-03 02:18:48,881 INFO L226 Difference]: Without dead ends: 106 [2022-11-03 02:18:48,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:18:48,883 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 66 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:48,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 223 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-03 02:18:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2022-11-03 02:18:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 87 states have internal predecessors, (106), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2022-11-03 02:18:48,907 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 12 [2022-11-03 02:18:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:48,908 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2022-11-03 02:18:48,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2022-11-03 02:18:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:18:48,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:48,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:48,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:18:48,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:48,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2137417444, now seen corresponding path program 1 times [2022-11-03 02:18:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:48,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861441164] [2022-11-03 02:18:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:49,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861441164] [2022-11-03 02:18:49,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861441164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:49,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:49,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169319612] [2022-11-03 02:18:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:49,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:49,140 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:49,341 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2022-11-03 02:18:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:18:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:49,352 INFO L225 Difference]: With dead ends: 204 [2022-11-03 02:18:49,352 INFO L226 Difference]: Without dead ends: 112 [2022-11-03 02:18:49,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:18:49,362 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:49,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 177 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-03 02:18:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2022-11-03 02:18:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 91 states have internal predecessors, (110), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2022-11-03 02:18:49,396 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 13 [2022-11-03 02:18:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:49,397 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2022-11-03 02:18:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2022-11-03 02:18:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:18:49,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:49,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:18:49,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash 840881872, now seen corresponding path program 1 times [2022-11-03 02:18:49,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:49,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491077674] [2022-11-03 02:18:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:18:49,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:49,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491077674] [2022-11-03 02:18:49,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491077674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:49,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:49,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:18:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815206855] [2022-11-03 02:18:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:49,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:49,479 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:49,541 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2022-11-03 02:18:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:49,544 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:18:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:49,550 INFO L225 Difference]: With dead ends: 102 [2022-11-03 02:18:49,550 INFO L226 Difference]: Without dead ends: 101 [2022-11-03 02:18:49,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:49,559 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:18:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-03 02:18:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2022-11-03 02:18:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 89 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2022-11-03 02:18:49,596 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 14 [2022-11-03 02:18:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:49,597 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2022-11-03 02:18:49,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2022-11-03 02:18:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:18:49,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:49,599 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:18:49,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash 840884050, now seen corresponding path program 1 times [2022-11-03 02:18:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:49,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652289812] [2022-11-03 02:18:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:49,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652289812] [2022-11-03 02:18:49,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652289812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:49,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062912004] [2022-11-03 02:18:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:49,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:49,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:49,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:49,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:18:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:49,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:18:49,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:18:49,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:18:49,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062912004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:49,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:18:49,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-03 02:18:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708942766] [2022-11-03 02:18:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:49,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:18:49,949 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:50,015 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2022-11-03 02:18:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:50,016 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:18:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:50,017 INFO L225 Difference]: With dead ends: 112 [2022-11-03 02:18:50,017 INFO L226 Difference]: Without dead ends: 111 [2022-11-03 02:18:50,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:18:50,019 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:50,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 191 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-03 02:18:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2022-11-03 02:18:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 91 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2022-11-03 02:18:50,034 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 14 [2022-11-03 02:18:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:50,034 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2022-11-03 02:18:50,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2022-11-03 02:18:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:18:50,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:50,036 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:50,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:50,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:50,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2047829874, now seen corresponding path program 1 times [2022-11-03 02:18:50,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:50,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819982046] [2022-11-03 02:18:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:18:50,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819982046] [2022-11-03 02:18:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819982046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:50,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:50,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724993404] [2022-11-03 02:18:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:50,331 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:50,473 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2022-11-03 02:18:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-03 02:18:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:50,478 INFO L225 Difference]: With dead ends: 136 [2022-11-03 02:18:50,478 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 02:18:50,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:50,480 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:50,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 174 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 02:18:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2022-11-03 02:18:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 108 states have internal predecessors, (135), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-11-03 02:18:50,520 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 20 [2022-11-03 02:18:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:50,521 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-11-03 02:18:50,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-11-03 02:18:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:18:50,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:50,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:50,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:18:50,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:50,528 INFO L85 PathProgramCache]: Analyzing trace with hash -47880238, now seen corresponding path program 1 times [2022-11-03 02:18:50,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:50,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100240657] [2022-11-03 02:18:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:50,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:18:50,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:50,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100240657] [2022-11-03 02:18:50,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100240657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:50,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140185573] [2022-11-03 02:18:50,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:50,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:50,622 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:50,698 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2022-11-03 02:18:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:50,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 02:18:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:50,700 INFO L225 Difference]: With dead ends: 142 [2022-11-03 02:18:50,701 INFO L226 Difference]: Without dead ends: 140 [2022-11-03 02:18:50,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:50,703 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:50,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 178 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-03 02:18:50,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 116. [2022-11-03 02:18:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.4) internal successors, (133), 108 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 141 transitions. [2022-11-03 02:18:50,731 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 141 transitions. Word has length 18 [2022-11-03 02:18:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:50,731 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 141 transitions. [2022-11-03 02:18:50,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:18:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 141 transitions. [2022-11-03 02:18:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:18:50,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:50,735 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:50,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:18:50,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:50,736 INFO L85 PathProgramCache]: Analyzing trace with hash 17962550, now seen corresponding path program 1 times [2022-11-03 02:18:50,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:50,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904363161] [2022-11-03 02:18:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:50,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:18:50,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904363161] [2022-11-03 02:18:50,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904363161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:50,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:50,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:50,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156608782] [2022-11-03 02:18:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:50,834 INFO L87 Difference]: Start difference. First operand 116 states and 141 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:50,960 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2022-11-03 02:18:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-03 02:18:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:50,962 INFO L225 Difference]: With dead ends: 129 [2022-11-03 02:18:50,963 INFO L226 Difference]: Without dead ends: 127 [2022-11-03 02:18:50,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:50,964 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:50,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 175 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-03 02:18:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2022-11-03 02:18:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.391304347826087) internal successors, (128), 105 states have internal predecessors, (128), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2022-11-03 02:18:50,978 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 22 [2022-11-03 02:18:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:50,978 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2022-11-03 02:18:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:18:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2022-11-03 02:18:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:18:50,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:50,980 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:50,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:18:50,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:50,982 INFO L85 PathProgramCache]: Analyzing trace with hash -872556697, now seen corresponding path program 1 times [2022-11-03 02:18:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:50,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285079248] [2022-11-03 02:18:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:18:51,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285079248] [2022-11-03 02:18:51,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285079248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:51,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:51,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:51,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854551883] [2022-11-03 02:18:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:51,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:51,062 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:18:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:51,203 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2022-11-03 02:18:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-03 02:18:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:51,209 INFO L225 Difference]: With dead ends: 124 [2022-11-03 02:18:51,209 INFO L226 Difference]: Without dead ends: 122 [2022-11-03 02:18:51,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:51,210 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 82 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:51,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 166 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-03 02:18:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-11-03 02:18:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 99 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2022-11-03 02:18:51,225 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 26 [2022-11-03 02:18:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2022-11-03 02:18:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:18:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2022-11-03 02:18:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:18:51,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:51,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:51,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:18:51,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1113586877, now seen corresponding path program 1 times [2022-11-03 02:18:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:51,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446779168] [2022-11-03 02:18:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:18:51,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:51,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446779168] [2022-11-03 02:18:51,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446779168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:51,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772975103] [2022-11-03 02:18:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:51,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:51,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:51,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:51,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:18:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:51,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:18:51,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:18:51,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:18:52,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772975103] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:52,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:18:52,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2022-11-03 02:18:52,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296096050] [2022-11-03 02:18:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:18:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:18:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:18:52,067 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:18:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:52,170 INFO L93 Difference]: Finished difference Result 143 states and 165 transitions. [2022-11-03 02:18:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-11-03 02:18:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:52,174 INFO L225 Difference]: With dead ends: 143 [2022-11-03 02:18:52,174 INFO L226 Difference]: Without dead ends: 111 [2022-11-03 02:18:52,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:18:52,176 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:52,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 305 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-03 02:18:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-03 02:18:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 99 states have internal predecessors, (118), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-11-03 02:18:52,193 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 28 [2022-11-03 02:18:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:52,193 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-11-03 02:18:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:18:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-11-03 02:18:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:18:52,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:52,196 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:52,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:52,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -120913201, now seen corresponding path program 1 times [2022-11-03 02:18:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:52,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700643103] [2022-11-03 02:18:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:18:52,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:52,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700643103] [2022-11-03 02:18:52,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700643103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:52,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:52,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:52,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155386889] [2022-11-03 02:18:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:52,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:18:52,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:18:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:52,501 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:18:52,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:52,610 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2022-11-03 02:18:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:18:52,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-03 02:18:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:52,612 INFO L225 Difference]: With dead ends: 118 [2022-11-03 02:18:52,612 INFO L226 Difference]: Without dead ends: 116 [2022-11-03 02:18:52,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:18:52,614 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:52,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 166 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-03 02:18:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2022-11-03 02:18:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 94 states have internal predecessors, (113), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:18:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2022-11-03 02:18:52,626 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 28 [2022-11-03 02:18:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:52,627 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2022-11-03 02:18:52,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:18:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2022-11-03 02:18:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:18:52,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:52,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:18:52,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1605976308, now seen corresponding path program 1 times [2022-11-03 02:18:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857602735] [2022-11-03 02:18:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:18:52,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:52,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857602735] [2022-11-03 02:18:52,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857602735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:52,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201514492] [2022-11-03 02:18:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:52,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:52,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:52,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:52,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:18:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:52,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:18:52,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:18:52,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:18:53,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201514492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:53,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181626157] [2022-11-03 02:18:53,301 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 02:18:53,301 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:18:53,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:18:53,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:18:53,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:18:53,566 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-03 02:18:53,655 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:18:55,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [181626157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:55,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:18:55,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 9, 7] total 23 [2022-11-03 02:18:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187566236] [2022-11-03 02:18:55,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:55,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:18:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:18:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:18:55,280 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 02:18:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:55,622 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2022-11-03 02:18:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:18:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-11-03 02:18:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:55,624 INFO L225 Difference]: With dead ends: 232 [2022-11-03 02:18:55,625 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 02:18:55,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:18:55,626 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 90 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:55,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 359 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:18:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 02:18:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2022-11-03 02:18:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 88 states have internal predecessors, (102), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:18:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-11-03 02:18:55,646 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 32 [2022-11-03 02:18:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:55,646 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-11-03 02:18:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 02:18:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-11-03 02:18:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:18:55,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:55,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:55,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:18:55,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:18:55,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:18:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 144043153, now seen corresponding path program 1 times [2022-11-03 02:18:55,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:55,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407245117] [2022-11-03 02:18:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:55,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:18:56,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407245117] [2022-11-03 02:18:56,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407245117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77882957] [2022-11-03 02:18:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:56,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:56,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:18:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:56,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:18:56,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:18:56,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:18:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77882957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127831694] [2022-11-03 02:18:56,537 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 02:18:56,538 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:18:56,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:18:56,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:18:56,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:18:56,966 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:18:57,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:01,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4626#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:01,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:01,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:01,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 16 [2022-11-03 02:19:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139462096] [2022-11-03 02:19:01,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:19:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:19:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-11-03 02:19:01,383 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 02:19:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:01,948 INFO L93 Difference]: Finished difference Result 257 states and 297 transitions. [2022-11-03 02:19:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 02:19:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 41 [2022-11-03 02:19:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:01,951 INFO L225 Difference]: With dead ends: 257 [2022-11-03 02:19:01,951 INFO L226 Difference]: Without dead ends: 146 [2022-11-03 02:19:01,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:19:01,953 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 60 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:01,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 629 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-03 02:19:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2022-11-03 02:19:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2625) internal successors, (101), 89 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:19:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-11-03 02:19:01,970 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 41 [2022-11-03 02:19:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:01,971 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-11-03 02:19:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 02:19:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-11-03 02:19:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 02:19:01,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:01,973 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:02,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:02,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:02,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:02,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1426985689, now seen corresponding path program 1 times [2022-11-03 02:19:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:02,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807435973] [2022-11-03 02:19:02,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:02,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:02,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807435973] [2022-11-03 02:19:02,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807435973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:02,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601883672] [2022-11-03 02:19:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:02,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:02,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:02,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:19:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:02,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:19:02,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:19:02,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:02,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601883672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:02,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [541365258] [2022-11-03 02:19:02,727 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 02:19:02,728 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:02,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:02,728 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:02,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:03,149 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:03,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:05,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [541365258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:05,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:05,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 34 [2022-11-03 02:19:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150154149] [2022-11-03 02:19:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:19:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:19:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:19:05,446 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:19:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:06,540 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2022-11-03 02:19:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:19:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2022-11-03 02:19:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:06,543 INFO L225 Difference]: With dead ends: 151 [2022-11-03 02:19:06,543 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 02:19:06,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:19:06,545 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 112 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:06,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 205 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 308 Invalid, 0 Unknown, 3 Unchecked, 0.6s Time] [2022-11-03 02:19:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 02:19:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 118. [2022-11-03 02:19:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.263157894736842) internal successors, (120), 106 states have internal predecessors, (120), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 02:19:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2022-11-03 02:19:06,568 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 49 [2022-11-03 02:19:06,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:06,569 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2022-11-03 02:19:06,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:19:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2022-11-03 02:19:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 02:19:06,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:06,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:06,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:19:06,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1810743554, now seen corresponding path program 1 times [2022-11-03 02:19:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337860802] [2022-11-03 02:19:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:07,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337860802] [2022-11-03 02:19:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337860802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191708286] [2022-11-03 02:19:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:07,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:07,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:07,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:07,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:19:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:19:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:19:07,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:07,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191708286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:07,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2101610171] [2022-11-03 02:19:07,387 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 02:19:07,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:07,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:07,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:07,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:07,792 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:07,976 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:10,272 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6085#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:10,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:10,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:10,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-03 02:19:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637593380] [2022-11-03 02:19:10,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:10,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:19:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:19:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:19:10,276 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:19:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:10,790 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2022-11-03 02:19:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:19:10,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-11-03 02:19:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:10,793 INFO L225 Difference]: With dead ends: 310 [2022-11-03 02:19:10,793 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 02:19:10,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:19:10,795 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 149 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 222 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 02:19:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 136. [2022-11-03 02:19:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.247787610619469) internal successors, (141), 124 states have internal predecessors, (141), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 02:19:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2022-11-03 02:19:10,823 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 50 [2022-11-03 02:19:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2022-11-03 02:19:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:19:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2022-11-03 02:19:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:19:10,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:10,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:10,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:19:11,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1238684379, now seen corresponding path program 1 times [2022-11-03 02:19:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203827573] [2022-11-03 02:19:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:11,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203827573] [2022-11-03 02:19:11,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203827573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:11,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314327560] [2022-11-03 02:19:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:11,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:11,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:11,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:19:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:11,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:19:11,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:19:11,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:11,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314327560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:11,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [460945708] [2022-11-03 02:19:11,559 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 02:19:11,560 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:11,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:11,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:11,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:12,257 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:12,374 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:15,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [460945708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:15,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:15,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [6, 6, 6] total 35 [2022-11-03 02:19:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736896186] [2022-11-03 02:19:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:19:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:19:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:19:15,835 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:19:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:16,930 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2022-11-03 02:19:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 02:19:16,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2022-11-03 02:19:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:16,933 INFO L225 Difference]: With dead ends: 171 [2022-11-03 02:19:16,933 INFO L226 Difference]: Without dead ends: 170 [2022-11-03 02:19:16,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 02:19:16,935 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:16,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 232 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 386 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2022-11-03 02:19:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-03 02:19:16,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 138. [2022-11-03 02:19:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 126 states have internal predecessors, (143), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 02:19:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2022-11-03 02:19:16,962 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 51 [2022-11-03 02:19:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2022-11-03 02:19:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:19:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2022-11-03 02:19:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:19:16,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:16,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:16,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:19:17,171 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1835847165, now seen corresponding path program 1 times [2022-11-03 02:19:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915949844] [2022-11-03 02:19:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:19:17,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915949844] [2022-11-03 02:19:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915949844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205903583] [2022-11-03 02:19:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:17,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:17,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:17,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:19:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:17,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:19:17,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:19:17,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:19:17,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205903583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:17,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920274168] [2022-11-03 02:19:17,660 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 02:19:17,661 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:17,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:17,663 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:17,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:18,037 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:18,200 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:20,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7715#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:20,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:20,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:20,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-03 02:19:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010098144] [2022-11-03 02:19:20,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:20,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:19:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:19:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:19:20,617 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:19:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:20,910 INFO L93 Difference]: Finished difference Result 360 states and 421 transitions. [2022-11-03 02:19:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:19:20,911 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-11-03 02:19:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:20,912 INFO L225 Difference]: With dead ends: 360 [2022-11-03 02:19:20,913 INFO L226 Difference]: Without dead ends: 268 [2022-11-03 02:19:20,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:19:20,914 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 159 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:20,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 245 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-03 02:19:20,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 140. [2022-11-03 02:19:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 128 states have internal predecessors, (142), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 02:19:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2022-11-03 02:19:20,944 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 51 [2022-11-03 02:19:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:20,945 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2022-11-03 02:19:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:19:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2022-11-03 02:19:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:19:20,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:20,946 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:20,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:19:21,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 590037250, now seen corresponding path program 2 times [2022-11-03 02:19:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:21,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422299762] [2022-11-03 02:19:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:21,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422299762] [2022-11-03 02:19:21,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422299762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193957038] [2022-11-03 02:19:21,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:19:21,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:21,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:21,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:19:21,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:19:21,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:19:21,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:19:21,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 02:19:22,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:19:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193957038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:19:22,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-11-03 02:19:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128501170] [2022-11-03 02:19:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:19:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:19:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:19:22,036 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:19:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:22,181 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2022-11-03 02:19:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:19:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-11-03 02:19:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:22,184 INFO L225 Difference]: With dead ends: 174 [2022-11-03 02:19:22,184 INFO L226 Difference]: Without dead ends: 173 [2022-11-03 02:19:22,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:19:22,185 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 29 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 330 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-03 02:19:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2022-11-03 02:19:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 133 states have internal predecessors, (147), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-03 02:19:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2022-11-03 02:19:22,213 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 70 [2022-11-03 02:19:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:22,213 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2022-11-03 02:19:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:19:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2022-11-03 02:19:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:19:22,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:22,215 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:22,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:22,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1023036925, now seen corresponding path program 2 times [2022-11-03 02:19:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:22,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045881129] [2022-11-03 02:19:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:19:22,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:22,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045881129] [2022-11-03 02:19:22,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045881129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:22,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13679947] [2022-11-03 02:19:22,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:19:22,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:22,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:22,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:19:22,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:19:22,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:19:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:19:22,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 02:19:22,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:47,372 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:47,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13679947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:47,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [575509590] [2022-11-03 02:19:47,378 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 02:19:47,379 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:47,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:47,379 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:47,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:47,695 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:47,863 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:19:51,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9220#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:19:51,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:51,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:19:51,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2022-11-03 02:19:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155503648] [2022-11-03 02:19:51,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:51,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:19:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:19:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=937, Unknown=2, NotChecked=0, Total=1122 [2022-11-03 02:19:51,025 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 02:19:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:51,542 INFO L93 Difference]: Finished difference Result 433 states and 508 transitions. [2022-11-03 02:19:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:19:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-11-03 02:19:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:51,547 INFO L225 Difference]: With dead ends: 433 [2022-11-03 02:19:51,547 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 02:19:51,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=237, Invalid=1243, Unknown=2, NotChecked=0, Total=1482 [2022-11-03 02:19:51,549 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 221 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:51,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 348 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 02:19:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 155. [2022-11-03 02:19:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 141 states have internal predecessors, (155), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:19:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 180 transitions. [2022-11-03 02:19:51,616 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 180 transitions. Word has length 71 [2022-11-03 02:19:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:51,618 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 180 transitions. [2022-11-03 02:19:51,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 02:19:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 180 transitions. [2022-11-03 02:19:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:19:51,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:51,622 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:51,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:19:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:51,851 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:19:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash 90118852, now seen corresponding path program 1 times [2022-11-03 02:19:51,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:51,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035647047] [2022-11-03 02:19:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:52,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:52,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035647047] [2022-11-03 02:19:52,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035647047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:19:52,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122677441] [2022-11-03 02:19:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:52,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:52,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:19:52,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:19:52,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:19:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:52,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:19:52,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:19:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:19:52,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:19:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:19:53,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122677441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:19:53,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204985811] [2022-11-03 02:19:53,200 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 02:19:53,201 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:19:53,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:19:53,201 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:19:53,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:53,637 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:19:53,800 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:20:00,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10422#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:20:00,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:20:00,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:20:00,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-11-03 02:20:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254989552] [2022-11-03 02:20:00,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:20:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:20:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:20:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 02:20:00,259 INFO L87 Difference]: Start difference. First operand 155 states and 180 transitions. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:16,559 INFO L93 Difference]: Finished difference Result 466 states and 551 transitions. [2022-11-03 02:20:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:20:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-03 02:20:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:16,563 INFO L225 Difference]: With dead ends: 466 [2022-11-03 02:20:16,563 INFO L226 Difference]: Without dead ends: 366 [2022-11-03 02:20:16,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=646, Invalid=2212, Unknown=4, NotChecked=0, Total=2862 [2022-11-03 02:20:16,565 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 417 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:16,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 587 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:20:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-03 02:20:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 188. [2022-11-03 02:20:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 162 states have (on average 1.191358024691358) internal successors, (193), 174 states have internal predecessors, (193), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:20:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2022-11-03 02:20:16,608 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 72 [2022-11-03 02:20:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:16,609 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2022-11-03 02:20:16,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:20:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2022-11-03 02:20:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:20:16,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:16,611 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:16,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:16,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:16,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:20:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 333694747, now seen corresponding path program 1 times [2022-11-03 02:20:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:16,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204747304] [2022-11-03 02:20:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:17,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:17,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204747304] [2022-11-03 02:20:17,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204747304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:17,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995770136] [2022-11-03 02:20:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:17,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:17,106 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:20:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:17,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:20:17,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:20:17,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:17,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995770136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:20:17,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [742350474] [2022-11-03 02:20:17,737 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 02:20:17,737 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:20:17,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:20:17,737 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:20:17,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:20:18,220 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:20:18,307 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:20:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [742350474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:23,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:20:23,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [11, 11, 11] total 51 [2022-11-03 02:20:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240787464] [2022-11-03 02:20:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:20:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:20:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 02:20:23,633 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:20:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:24,969 INFO L93 Difference]: Finished difference Result 247 states and 288 transitions. [2022-11-03 02:20:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:20:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 77 [2022-11-03 02:20:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:24,975 INFO L225 Difference]: With dead ends: 247 [2022-11-03 02:20:24,975 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 02:20:24,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=675, Invalid=2747, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 02:20:24,977 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:24,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 223 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 343 Invalid, 0 Unknown, 27 Unchecked, 0.8s Time] [2022-11-03 02:20:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 02:20:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 190. [2022-11-03 02:20:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 164 states have (on average 1.1890243902439024) internal successors, (195), 176 states have internal predecessors, (195), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:20:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2022-11-03 02:20:25,032 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 77 [2022-11-03 02:20:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:25,033 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2022-11-03 02:20:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:20:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2022-11-03 02:20:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:20:25,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:25,035 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:25,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:25,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:25,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:20:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2067288453, now seen corresponding path program 1 times [2022-11-03 02:20:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:25,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272517346] [2022-11-03 02:20:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:25,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:20:25,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:25,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272517346] [2022-11-03 02:20:25,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272517346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:25,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981113171] [2022-11-03 02:20:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:25,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:25,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:25,601 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:25,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:20:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:25,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:20:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:20:25,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:20:26,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981113171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:20:26,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1244589743] [2022-11-03 02:20:26,388 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 02:20:26,388 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:20:26,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:20:26,389 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:20:26,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:20:26,781 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:20:26,929 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:20:32,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12833#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:20:32,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:20:32,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:20:32,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-03 02:20:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948752143] [2022-11-03 02:20:32,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:20:32,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:20:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:20:32,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1557, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 02:20:32,495 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:20:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:33,204 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2022-11-03 02:20:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:20:33,205 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-03 02:20:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:33,209 INFO L225 Difference]: With dead ends: 644 [2022-11-03 02:20:33,209 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 02:20:33,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=594, Invalid=1758, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 02:20:33,211 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 408 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:33,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 324 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 02:20:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 202. [2022-11-03 02:20:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 176 states have (on average 1.1534090909090908) internal successors, (203), 188 states have internal predecessors, (203), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:20:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2022-11-03 02:20:33,266 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 78 [2022-11-03 02:20:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:33,266 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2022-11-03 02:20:33,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:20:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2022-11-03 02:20:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:20:33,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:33,269 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:33,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:33,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 02:20:33,483 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:20:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash -539354428, now seen corresponding path program 2 times [2022-11-03 02:20:33,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:33,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425685465] [2022-11-03 02:20:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:34,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425685465] [2022-11-03 02:20:34,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425685465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021806451] [2022-11-03 02:20:34,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:20:34,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:34,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:34,331 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:34,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:20:34,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:20:34,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:20:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:20:34,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-03 02:20:34,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:34,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021806451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:34,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:34,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 24 [2022-11-03 02:20:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198610712] [2022-11-03 02:20:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:20:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:20:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:20:34,652 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:34,811 INFO L93 Difference]: Finished difference Result 260 states and 286 transitions. [2022-11-03 02:20:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-11-03 02:20:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:34,814 INFO L225 Difference]: With dead ends: 260 [2022-11-03 02:20:34,814 INFO L226 Difference]: Without dead ends: 259 [2022-11-03 02:20:34,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:20:34,816 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 80 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:34,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 398 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-03 02:20:34,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 208. [2022-11-03 02:20:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 193 states have internal predecessors, (209), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:20:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2022-11-03 02:20:34,864 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 112 [2022-11-03 02:20:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:34,865 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2022-11-03 02:20:34,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2022-11-03 02:20:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:20:34,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:34,867 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:34,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:35,083 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:20:35,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 459882066, now seen corresponding path program 1 times [2022-11-03 02:20:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:35,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190995712] [2022-11-03 02:20:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:35,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:35,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190995712] [2022-11-03 02:20:35,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190995712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:35,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571037999] [2022-11-03 02:20:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:35,836 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:35,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:20:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:36,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:20:36,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-03 02:20:36,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571037999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:36,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:36,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 26 [2022-11-03 02:20:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055576030] [2022-11-03 02:20:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:20:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:20:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:20:36,337 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:36,687 INFO L93 Difference]: Finished difference Result 263 states and 289 transitions. [2022-11-03 02:20:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:20:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 113 [2022-11-03 02:20:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:36,690 INFO L225 Difference]: With dead ends: 263 [2022-11-03 02:20:36,690 INFO L226 Difference]: Without dead ends: 260 [2022-11-03 02:20:36,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:20:36,691 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 90 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 424 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-03 02:20:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 219. [2022-11-03 02:20:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 193 states have (on average 1.160621761658031) internal successors, (224), 204 states have internal predecessors, (224), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:20:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 249 transitions. [2022-11-03 02:20:36,736 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 249 transitions. Word has length 113 [2022-11-03 02:20:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:36,737 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 249 transitions. [2022-11-03 02:20:36,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 249 transitions. [2022-11-03 02:20:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 02:20:36,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:36,739 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:36,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 02:20:36,953 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:20:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1371442310, now seen corresponding path program 1 times [2022-11-03 02:20:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:36,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614253027] [2022-11-03 02:20:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:37,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614253027] [2022-11-03 02:20:37,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614253027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694494855] [2022-11-03 02:20:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:37,730 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:37,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 02:20:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:38,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:20:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 21 proven. 455 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:20:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:20:40,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694494855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:20:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1118394967] [2022-11-03 02:20:40,574 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 02:20:40,574 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:20:40,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:20:40,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:20:40,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:20:41,027 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:20:41,177 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:21:25,401 WARN L234 SmtUtils]: Spent 43.05s on a formula simplification. DAG size of input: 121 DAG size of output: 118 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:35,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16514#(and (< (+ |ULTIMATE.start_mulflt_~ea~1#1| |ULTIMATE.start_mulflt_~eb~1#1| 2147483648) 0) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520)) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~eb~1#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:21:35,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:21:35,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:35,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-11-03 02:21:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627848018] [2022-11-03 02:21:35,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:21:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 02:21:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 02:21:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=3626, Unknown=0, NotChecked=0, Total=4422 [2022-11-03 02:21:35,403 INFO L87 Difference]: Start difference. First operand 219 states and 249 transitions. Second operand has 49 states, 49 states have (on average 5.183673469387755) internal successors, (254), 49 states have internal predecessors, (254), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:21:48,623 WARN L234 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 51 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:06,527 WARN L234 SmtUtils]: Spent 13.20s on a formula simplification. DAG size of input: 46 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:25,567 WARN L234 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 36 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:52,689 INFO L93 Difference]: Finished difference Result 670 states and 786 transitions. [2022-11-03 02:22:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 02:22:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.183673469387755) internal successors, (254), 49 states have internal predecessors, (254), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2022-11-03 02:22:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:52,695 INFO L225 Difference]: With dead ends: 670 [2022-11-03 02:22:52,695 INFO L226 Difference]: Without dead ends: 553 [2022-11-03 02:22:52,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 130.5s TimeCoverageRelationStatistics Valid=1784, Invalid=6219, Unknown=7, NotChecked=0, Total=8010 [2022-11-03 02:22:52,699 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 524 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:52,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1546 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:22:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-03 02:22:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 257. [2022-11-03 02:22:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 231 states have (on average 1.155844155844156) internal successors, (267), 242 states have internal predecessors, (267), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:22:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 292 transitions. [2022-11-03 02:22:52,761 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 292 transitions. Word has length 114 [2022-11-03 02:22:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:52,762 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 292 transitions. [2022-11-03 02:22:52,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.183673469387755) internal successors, (254), 49 states have internal predecessors, (254), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:22:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 292 transitions. [2022-11-03 02:22:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 02:22:52,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:52,764 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:52,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 02:22:52,991 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:22:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash 186093445, now seen corresponding path program 2 times [2022-11-03 02:22:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:52,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733857622] [2022-11-03 02:22:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:22:53,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:53,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733857622] [2022-11-03 02:22:53,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733857622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305901130] [2022-11-03 02:22:53,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:22:53,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:53,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:53,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:53,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 02:22:54,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-11-03 02:22:54,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:22:54,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:22:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 21 proven. 632 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:54,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:22:55,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305901130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112737521] [2022-11-03 02:22:55,882 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 02:22:55,883 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:22:55,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:22:55,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:22:55,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:22:56,258 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 02:22:56,399 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:23:03,475 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18519#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (not (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:23:03,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:23:03,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:23:03,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 56 [2022-11-03 02:23:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540809030] [2022-11-03 02:23:03,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:23:03,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-03 02:23:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-03 02:23:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=3807, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:23:03,479 INFO L87 Difference]: Start difference. First operand 257 states and 292 transitions. Second operand has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:23:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:05,027 INFO L93 Difference]: Finished difference Result 1168 states and 1417 transitions. [2022-11-03 02:23:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-03 02:23:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 123 [2022-11-03 02:23:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:05,033 INFO L225 Difference]: With dead ends: 1168 [2022-11-03 02:23:05,034 INFO L226 Difference]: Without dead ends: 1047 [2022-11-03 02:23:05,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1602, Invalid=4098, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:23:05,037 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 985 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:05,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 413 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:23:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-03 02:23:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 309. [2022-11-03 02:23:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 283 states have (on average 1.137809187279152) internal successors, (322), 294 states have internal predecessors, (322), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 02:23:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 347 transitions. [2022-11-03 02:23:05,133 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 347 transitions. Word has length 123 [2022-11-03 02:23:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 347 transitions. [2022-11-03 02:23:05,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:23:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 347 transitions. [2022-11-03 02:23:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 02:23:05,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:05,137 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:05,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:05,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 02:23:05,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:23:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1324331898, now seen corresponding path program 2 times [2022-11-03 02:23:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006639787] [2022-11-03 02:23:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-03 02:23:06,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006639787] [2022-11-03 02:23:06,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006639787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:06,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:06,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:23:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873991447] [2022-11-03 02:23:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:23:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:23:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:23:06,255 INFO L87 Difference]: Start difference. First operand 309 states and 347 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:23:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:06,734 INFO L93 Difference]: Finished difference Result 349 states and 383 transitions. [2022-11-03 02:23:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:23:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2022-11-03 02:23:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:06,737 INFO L225 Difference]: With dead ends: 349 [2022-11-03 02:23:06,737 INFO L226 Difference]: Without dead ends: 342 [2022-11-03 02:23:06,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:23:06,738 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 78 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:06,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 461 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:23:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-03 02:23:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 287. [2022-11-03 02:23:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 266 states have (on average 1.1203007518796992) internal successors, (298), 275 states have internal predecessors, (298), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 02:23:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 311 transitions. [2022-11-03 02:23:06,809 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 311 transitions. Word has length 164 [2022-11-03 02:23:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:06,810 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 311 transitions. [2022-11-03 02:23:06,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:23:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 311 transitions. [2022-11-03 02:23:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 02:23:06,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:06,813 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:06,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 02:23:06,814 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 02:23:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1011646162, now seen corresponding path program 1 times [2022-11-03 02:23:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:06,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924288579] [2022-11-03 02:23:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:23:06,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:23:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:23:07,137 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:23:07,138 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:23:07,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-03 02:23:07,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-03 02:23:07,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-03 02:23:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-03 02:23:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-03 02:23:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-03 02:23:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-03 02:23:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-03 02:23:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-03 02:23:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-03 02:23:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-03 02:23:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-03 02:23:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-03 02:23:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-03 02:23:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-03 02:23:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-03 02:23:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-03 02:23:07,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-03 02:23:07,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 02:23:07,149 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:07,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:23:07,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:23:07 BoogieIcfgContainer [2022-11-03 02:23:07,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:23:07,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:23:07,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:23:07,270 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:23:07,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:47" (3/4) ... [2022-11-03 02:23:07,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:23:07,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:23:07,275 INFO L158 Benchmark]: Toolchain (without parser) took 261450.59ms. Allocated memory was 100.7MB in the beginning and 232.8MB in the end (delta: 132.1MB). Free memory was 68.8MB in the beginning and 168.5MB in the end (delta: -99.6MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,275 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 100.7MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:23:07,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.31ms. Allocated memory is still 100.7MB. Free memory was 68.6MB in the beginning and 72.6MB in the end (delta: -3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.23ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,276 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 100.7MB. Free memory was 70.5MB in the beginning and 68.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,277 INFO L158 Benchmark]: RCFGBuilder took 1010.89ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.8MB in the beginning and 103.4MB in the end (delta: -34.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,277 INFO L158 Benchmark]: TraceAbstraction took 259748.44ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 102.2MB in the beginning and 168.5MB in the end (delta: -66.3MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-03 02:23:07,277 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 232.8MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:23:07,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 100.7MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.31ms. Allocated memory is still 100.7MB. Free memory was 68.6MB in the beginning and 72.6MB in the end (delta: -3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.23ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 100.7MB. Free memory was 70.5MB in the beginning and 68.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1010.89ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.8MB in the beginning and 103.4MB in the end (delta: -34.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * TraceAbstraction took 259748.44ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 102.2MB in the beginning and 168.5MB in the end (delta: -66.3MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 232.8MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseOr at line 173, overapproximation of bitwiseAnd at line 174. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sa ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=127, eb=127] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=127] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=1, e=-24, m=16777216, res=1] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1, ea=127, eb=127, zero=0] [L239] one = base2flt(1, 0) [L240] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L80] return (__retres4); [L240] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=127, ma=33554432, one=1, zero=0] [L240] a = base2flt(ma, ea) [L241] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=127, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=16777216, e=127, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=16777216, e=127, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=16777216, e=127, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=16777216, e=127, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=127, \old(m)=16777216, e=127, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=127, \old(m)=16777216, e=127, m=0] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=127, \old(m)=16777216, __retres4=1, e=127, m=0, res=1] [L80] return (__retres4); [L241] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=127, ma=33554432, mb=16777216, one=1, zero=0] [L241] b = base2flt(mb, eb) [L243] COND FALSE !(a < zero) [L246] COND TRUE a > zero [L247] tmp = 1 [L251] sa = tmp [L254] CALL mulflt(a, b) [L148] unsigned int res ; [L149] unsigned int ma ; [L150] unsigned int mb ; [L151] unsigned long long accu ; [L152] int ea ; [L153] int eb ; [L154] unsigned int tmp ; [L155] unsigned int __retres10 ; [L158] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, tmp=4294967295] [L165] COND FALSE !(! b) [L171] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ma=0, tmp=4294967295] [L172] EXPR (int )(a >> 24U) - 128 [L172] ea = (int )(a >> 24U) - 128 [L173] ma = ma | (1U << 24U) [L174] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, mb=1, tmp=4294967295] [L175] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, mb=1, tmp=4294967295] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 71 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 259.5s, OverallIterations: 29, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 104.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4268 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4191 mSDsluCounter, 9068 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 94 IncrementalHoareTripleChecker+Unchecked, 7937 mSDsCounter, 839 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5796 IncrementalHoareTripleChecker+Invalid, 6729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 839 mSolverCounterUnsat, 1571 mSDtfsCounter, 5796 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3057 GetRequests, 2338 SyntacticMatches, 28 SemanticMatches, 691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13001 ImplicationChecksByTransitivity, 208.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=27, InterpolantAutomatonStates: 380, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 28 MinimizatonAttempts, 2462 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 41.2s InterpolantComputationTime, 2789 NumberOfCodeBlocks, 2602 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3334 ConstructedInterpolants, 0 QuantifiedInterpolants, 13903 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2693 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 57 InterpolantComputations, 16 PerfectInterpolantSequences, 3571/9173 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: 2.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 111, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 209, TOOLS_POST_TIME: 0.9s, TOOLS_POST_CALL_APPLICATIONS: 42, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 28, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 279, TOOLS_QUANTIFIERELIM_TIME: 1.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 401, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 55, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 12, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 18, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 111, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 0.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 18, CALL_SUMMARIZER_APPLICATIONS: 28, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.3s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1298, DAG_COMPRESSION_RETAINED_NODES: 292, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:23:07,526 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-03 02:23:07,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf31598-e95a-4dda-ab80-1b4c7d47dce8/bin/utaipan-7li7fVZpFI/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