./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta --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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- 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-dbf71c6-m [2022-10-17 17:39:29,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:29,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:29,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:29,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:29,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:29,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:29,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:29,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:29,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:29,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:29,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:29,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:29,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:29,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:29,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:29,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:29,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:29,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:29,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:29,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:29,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:29,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:29,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:29,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:29,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:29,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:29,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:29,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:29,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:29,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:29,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:29,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:29,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:29,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:29,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:29,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:29,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:29,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:29,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:29,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:29,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-10-17 17:39:29,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:29,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:29,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:29,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:29,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:29,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:29,755 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:29,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:29,755 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:29,756 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:29,756 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:29,756 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:29,756 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:29,756 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:29,757 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:29,757 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:29,757 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:29,757 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:29,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:29,758 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:29,758 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:39:29,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:29,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:29,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:29,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:29,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:29,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:29,760 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:39:29,760 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:29,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:29,760 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:29,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:29,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:29,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:29,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:29,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:29,762 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:29,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:29,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:29,762 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:29,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:29,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:29,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:29,763 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_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-10-17 17:39:30,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:30,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:30,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:30,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:30,068 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:30,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-10-17 17:39:30,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/data/d0aa972c4/105ee5381b4b4b928caac5a2acaba28b/FLAGb92f7d534 [2022-10-17 17:39:30,558 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:30,559 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-10-17 17:39:30,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/data/d0aa972c4/105ee5381b4b4b928caac5a2acaba28b/FLAGb92f7d534 [2022-10-17 17:39:30,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/data/d0aa972c4/105ee5381b4b4b928caac5a2acaba28b [2022-10-17 17:39:30,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:30,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:30,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:30,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:30,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:31,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:30" (1/1) ... [2022-10-17 17:39:31,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6157c6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31, skipping insertion in model container [2022-10-17 17:39:31,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:30" (1/1) ... [2022-10-17 17:39:31,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:31,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:31,222 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_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-10-17 17:39:31,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:31,311 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:31,323 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_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-10-17 17:39:31,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:31,369 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:31,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31 WrapperNode [2022-10-17 17:39:31,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:31,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:31,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:31,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:31,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,452 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 192 [2022-10-17 17:39:31,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:31,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:31,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:31,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:31,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,524 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:31,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:31,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:31,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:31,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:31,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:31,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:31,630 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-17 17:39:31,630 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-17 17:39:31,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:31,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:31,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:39:31,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:39:31,711 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:31,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:32,327 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:32,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:32,639 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:39:32,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:32 BoogieIcfgContainer [2022-10-17 17:39:32,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:32,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:32,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:32,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:32,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:30" (1/3) ... [2022-10-17 17:39:32,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:32, skipping insertion in model container [2022-10-17 17:39:32,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (2/3) ... [2022-10-17 17:39:32,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bde01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:32, skipping insertion in model container [2022-10-17 17:39:32,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:32" (3/3) ... [2022-10-17 17:39:32,660 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-10-17 17:39:32,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:32,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-17 17:39:32,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:32,765 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;@6c4c49e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:32,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-17 17:39:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 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) [2022-10-17 17:39:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:39:32,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:32,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:32,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2016155749, now seen corresponding path program 1 times [2022-10-17 17:39:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:32,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586333118] [2022-10-17 17:39:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:32,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586333118] [2022-10-17 17:39:32,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586333118] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:32,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:32,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255577002] [2022-10-17 17:39:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:32,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:39:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:39:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:32,977 INFO L87 Difference]: Start difference. First operand has 79 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 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) [2022-10-17 17:39:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:33,087 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2022-10-17 17:39:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:39:33,095 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 [2022-10-17 17:39:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:33,107 INFO L225 Difference]: With dead ends: 154 [2022-10-17 17:39:33,112 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 17:39:33,117 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 [2022-10-17 17:39:33,121 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:33,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 17:39:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-10-17 17:39:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 64 states have internal predecessors, (71), 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) [2022-10-17 17:39:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2022-10-17 17:39:33,183 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 8 [2022-10-17 17:39:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:33,184 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2022-10-17 17:39:33,185 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) [2022-10-17 17:39:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-10-17 17:39:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:39:33,187 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:33,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:33,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:33,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:33,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2017448606, now seen corresponding path program 1 times [2022-10-17 17:39:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253215413] [2022-10-17 17:39:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:33,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:33,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253215413] [2022-10-17 17:39:33,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253215413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:33,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:33,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061501694] [2022-10-17 17:39:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:39:33,340 INFO L87 Difference]: Start difference. First operand 70 states and 79 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) [2022-10-17 17:39:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:33,546 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2022-10-17 17:39:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:39:33,548 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 [2022-10-17 17:39:33,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:33,552 INFO L225 Difference]: With dead ends: 182 [2022-10-17 17:39:33,552 INFO L226 Difference]: Without dead ends: 114 [2022-10-17 17:39:33,553 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 [2022-10-17 17:39:33,555 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 61 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:33,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 169 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-17 17:39:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2022-10-17 17:39:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 97 states have internal predecessors, (119), 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) [2022-10-17 17:39:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2022-10-17 17:39:33,579 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 8 [2022-10-17 17:39:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:33,580 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2022-10-17 17:39:33,580 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) [2022-10-17 17:39:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2022-10-17 17:39:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:39:33,581 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:33,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:39:33,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash 660716207, now seen corresponding path program 1 times [2022-10-17 17:39:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:33,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387533797] [2022-10-17 17:39:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:33,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387533797] [2022-10-17 17:39:33,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387533797] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:33,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517392307] [2022-10-17 17:39:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:33,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:33,722 INFO L87 Difference]: Start difference. First operand 104 states and 127 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) [2022-10-17 17:39:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:33,858 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2022-10-17 17:39:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:33,859 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 [2022-10-17 17:39:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:33,862 INFO L225 Difference]: With dead ends: 125 [2022-10-17 17:39:33,862 INFO L226 Difference]: Without dead ends: 122 [2022-10-17 17:39:33,863 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 [2022-10-17 17:39:33,871 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 80 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:33,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 222 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-10-17 17:39:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2022-10-17 17:39:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.5) internal successors, (123), 101 states have internal predecessors, (123), 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) [2022-10-17 17:39:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2022-10-17 17:39:33,897 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 12 [2022-10-17 17:39:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2022-10-17 17:39:33,897 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) [2022-10-17 17:39:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2022-10-17 17:39:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:39:33,899 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:33,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:39:33,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -992633942, now seen corresponding path program 1 times [2022-10-17 17:39:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:33,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236010839] [2022-10-17 17:39:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:34,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:34,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236010839] [2022-10-17 17:39:34,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236010839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:34,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835636789] [2022-10-17 17:39:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:34,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:34,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:34,053 INFO L87 Difference]: Start difference. First operand 108 states and 131 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) [2022-10-17 17:39:34,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:34,225 INFO L93 Difference]: Finished difference Result 236 states and 285 transitions. [2022-10-17 17:39:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:34,226 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 [2022-10-17 17:39:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:34,228 INFO L225 Difference]: With dead ends: 236 [2022-10-17 17:39:34,228 INFO L226 Difference]: Without dead ends: 130 [2022-10-17 17:39:34,232 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 [2022-10-17 17:39:34,242 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 91 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:34,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 221 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-17 17:39:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2022-10-17 17:39:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 105 states have internal predecessors, (126), 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) [2022-10-17 17:39:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2022-10-17 17:39:34,263 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 13 [2022-10-17 17:39:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:34,264 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2022-10-17 17:39:34,264 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) [2022-10-17 17:39:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2022-10-17 17:39:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:39:34,266 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:34,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:34,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:39:34,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:34,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1957555408, now seen corresponding path program 1 times [2022-10-17 17:39:34,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:34,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512375954] [2022-10-17 17:39:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:39:34,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:34,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512375954] [2022-10-17 17:39:34,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512375954] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:34,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:34,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:34,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405769338] [2022-10-17 17:39:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:34,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:34,321 INFO L87 Difference]: Start difference. First operand 112 states and 134 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) [2022-10-17 17:39:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:34,367 INFO L93 Difference]: Finished difference Result 116 states and 140 transitions. [2022-10-17 17:39:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:34,367 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 [2022-10-17 17:39:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:34,369 INFO L225 Difference]: With dead ends: 116 [2022-10-17 17:39:34,369 INFO L226 Difference]: Without dead ends: 115 [2022-10-17 17:39:34,369 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 [2022-10-17 17:39:34,370 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:34,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 124 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:39:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-17 17:39:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2022-10-17 17:39:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 103 states have internal predecessors, (123), 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) [2022-10-17 17:39:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2022-10-17 17:39:34,383 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 14 [2022-10-17 17:39:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:34,383 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2022-10-17 17:39:34,383 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) [2022-10-17 17:39:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2022-10-17 17:39:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:39:34,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:34,385 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:34,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:39:34,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1957569944, now seen corresponding path program 1 times [2022-10-17 17:39:34,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:34,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289237692] [2022-10-17 17:39:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:34,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:34,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289237692] [2022-10-17 17:39:34,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289237692] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:34,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974828948] [2022-10-17 17:39:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:34,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:34,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:34,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:39:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:34,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:39:34,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:34,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:39:34,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974828948] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:34,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:39:34,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-17 17:39:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820809256] [2022-10-17 17:39:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:39:34,627 INFO L87 Difference]: Start difference. First operand 110 states and 131 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) [2022-10-17 17:39:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:34,698 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2022-10-17 17:39:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:39:34,699 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 [2022-10-17 17:39:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:34,702 INFO L225 Difference]: With dead ends: 129 [2022-10-17 17:39:34,702 INFO L226 Difference]: Without dead ends: 127 [2022-10-17 17:39:34,703 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 [2022-10-17 17:39:34,706 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:34,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 133 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-10-17 17:39:34,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2022-10-17 17:39:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 105 states have internal predecessors, (125), 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) [2022-10-17 17:39:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2022-10-17 17:39:34,732 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 14 [2022-10-17 17:39:34,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:34,732 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2022-10-17 17:39:34,732 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) [2022-10-17 17:39:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2022-10-17 17:39:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 17:39:34,739 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:34,739 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:34,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:34,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:34,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2142263954, now seen corresponding path program 1 times [2022-10-17 17:39:34,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:34,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817979604] [2022-10-17 17:39:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:39:35,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817979604] [2022-10-17 17:39:35,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817979604] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:35,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:35,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:35,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452349978] [2022-10-17 17:39:35,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:35,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:35,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:35,073 INFO L87 Difference]: Start difference. First operand 112 states and 133 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) [2022-10-17 17:39:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:35,193 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2022-10-17 17:39:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:35,194 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 [2022-10-17 17:39:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:35,196 INFO L225 Difference]: With dead ends: 158 [2022-10-17 17:39:35,196 INFO L226 Difference]: Without dead ends: 155 [2022-10-17 17:39:35,196 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 [2022-10-17 17:39:35,198 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 99 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:35,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 175 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-10-17 17:39:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 132. [2022-10-17 17:39:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 1.4528301886792452) internal successors, (154), 124 states have internal predecessors, (154), 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) [2022-10-17 17:39:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 162 transitions. [2022-10-17 17:39:35,218 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 162 transitions. Word has length 20 [2022-10-17 17:39:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 162 transitions. [2022-10-17 17:39:35,219 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) [2022-10-17 17:39:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 162 transitions. [2022-10-17 17:39:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:39:35,220 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:35,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:39:35,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1774234016, now seen corresponding path program 1 times [2022-10-17 17:39:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648562731] [2022-10-17 17:39:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:39:35,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:35,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648562731] [2022-10-17 17:39:35,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648562731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:35,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:35,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:35,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045063856] [2022-10-17 17:39:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:39:35,272 INFO L87 Difference]: Start difference. First operand 132 states and 162 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) [2022-10-17 17:39:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:35,350 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2022-10-17 17:39:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:39:35,350 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 [2022-10-17 17:39:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:35,353 INFO L225 Difference]: With dead ends: 165 [2022-10-17 17:39:35,353 INFO L226 Difference]: Without dead ends: 162 [2022-10-17 17:39:35,354 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 [2022-10-17 17:39:35,355 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:35,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 124 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-10-17 17:39:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 134. [2022-10-17 17:39:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 109 states have (on average 1.4128440366972477) internal successors, (154), 126 states have internal predecessors, (154), 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) [2022-10-17 17:39:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-10-17 17:39:35,370 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 18 [2022-10-17 17:39:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:35,370 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-10-17 17:39:35,370 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) [2022-10-17 17:39:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-10-17 17:39:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:39:35,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:35,371 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:39:35,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1981192390, now seen corresponding path program 1 times [2022-10-17 17:39:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:35,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756460672] [2022-10-17 17:39:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:39:35,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756460672] [2022-10-17 17:39:35,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756460672] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:35,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:35,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:35,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604333448] [2022-10-17 17:39:35,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:35,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:35,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:35,452 INFO L87 Difference]: Start difference. First operand 134 states and 162 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) [2022-10-17 17:39:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:35,576 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2022-10-17 17:39:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:35,577 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 [2022-10-17 17:39:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:35,578 INFO L225 Difference]: With dead ends: 150 [2022-10-17 17:39:35,579 INFO L226 Difference]: Without dead ends: 147 [2022-10-17 17:39:35,579 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 [2022-10-17 17:39:35,580 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:35,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 178 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-10-17 17:39:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 129. [2022-10-17 17:39:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 121 states have internal predecessors, (146), 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) [2022-10-17 17:39:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2022-10-17 17:39:35,591 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 22 [2022-10-17 17:39:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:35,591 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2022-10-17 17:39:35,591 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) [2022-10-17 17:39:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2022-10-17 17:39:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 17:39:35,592 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:35,593 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 17:39:35,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1900407085, now seen corresponding path program 1 times [2022-10-17 17:39:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162394242] [2022-10-17 17:39:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:39:35,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:35,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162394242] [2022-10-17 17:39:35,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162394242] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:35,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:35,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862766226] [2022-10-17 17:39:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:35,648 INFO L87 Difference]: Start difference. First operand 129 states and 154 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) [2022-10-17 17:39:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:35,755 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-10-17 17:39:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:35,755 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 [2022-10-17 17:39:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:35,757 INFO L225 Difference]: With dead ends: 142 [2022-10-17 17:39:35,757 INFO L226 Difference]: Without dead ends: 139 [2022-10-17 17:39:35,758 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 [2022-10-17 17:39:35,758 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 95 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:35,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 163 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-17 17:39:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2022-10-17 17:39:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 112 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) [2022-10-17 17:39:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-10-17 17:39:35,771 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 26 [2022-10-17 17:39:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:35,772 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-10-17 17:39:35,772 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) [2022-10-17 17:39:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2022-10-17 17:39:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 17:39:35,773 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:35,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 17:39:35,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1738151222, now seen corresponding path program 1 times [2022-10-17 17:39:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:35,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804924965] [2022-10-17 17:39:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:39:35,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804924965] [2022-10-17 17:39:35,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804924965] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226529040] [2022-10-17 17:39:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:35,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:35,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:39:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:35,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 17:39:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 17:39:36,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:39:36,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226529040] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:36,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:39:36,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2022-10-17 17:39:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994045368] [2022-10-17 17:39:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:36,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:39:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:39:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:39:36,370 INFO L87 Difference]: Start difference. First operand 120 states and 141 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) [2022-10-17 17:39:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:36,476 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2022-10-17 17:39:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:36,477 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 [2022-10-17 17:39:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:36,478 INFO L225 Difference]: With dead ends: 160 [2022-10-17 17:39:36,478 INFO L226 Difference]: Without dead ends: 124 [2022-10-17 17:39:36,479 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 [2022-10-17 17:39:36,479 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:36,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 314 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-17 17:39:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-10-17 17:39:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.336734693877551) internal successors, (131), 112 states have internal predecessors, (131), 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) [2022-10-17 17:39:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2022-10-17 17:39:36,491 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 28 [2022-10-17 17:39:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:36,491 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2022-10-17 17:39:36,491 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) [2022-10-17 17:39:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2022-10-17 17:39:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 17:39:36,494 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:36,494 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] [2022-10-17 17:39:36,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:36,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1817557781, now seen corresponding path program 1 times [2022-10-17 17:39:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:36,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846820153] [2022-10-17 17:39:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:39:36,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:36,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846820153] [2022-10-17 17:39:36,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846820153] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:36,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419472234] [2022-10-17 17:39:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:36,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:36,796 INFO L87 Difference]: Start difference. First operand 120 states and 139 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) [2022-10-17 17:39:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:36,891 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2022-10-17 17:39:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:36,891 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 [2022-10-17 17:39:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:36,893 INFO L225 Difference]: With dead ends: 133 [2022-10-17 17:39:36,893 INFO L226 Difference]: Without dead ends: 130 [2022-10-17 17:39:36,893 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 [2022-10-17 17:39:36,894 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 80 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:36,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 163 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-17 17:39:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2022-10-17 17:39:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 104 states have internal predecessors, (123), 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) [2022-10-17 17:39:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2022-10-17 17:39:36,906 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 28 [2022-10-17 17:39:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:36,907 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2022-10-17 17:39:36,907 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) [2022-10-17 17:39:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2022-10-17 17:39:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 17:39:36,908 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:36,908 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] [2022-10-17 17:39:36,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 17:39:36,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1500626919, now seen corresponding path program 1 times [2022-10-17 17:39:36,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:36,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872643539] [2022-10-17 17:39:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:36,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:39:37,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872643539] [2022-10-17 17:39:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872643539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:37,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099673508] [2022-10-17 17:39:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:37,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:37,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:37,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:39:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:37,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-17 17:39:37,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:39:37,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:39:37,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099673508] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:37,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920665230] [2022-10-17 17:39:37,631 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-10-17 17:39:37,631 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:37,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:37,640 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:37,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:37,817 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-10-17 17:39:37,892 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:39:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [920665230] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:39,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:39:39,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 12, 7] total 27 [2022-10-17 17:39:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993781769] [2022-10-17 17:39:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:39,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:39:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:39:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-10-17 17:39:39,009 INFO L87 Difference]: Start difference. First operand 112 states and 131 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) [2022-10-17 17:39:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:39,308 INFO L93 Difference]: Finished difference Result 256 states and 298 transitions. [2022-10-17 17:39:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 17:39:39,309 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 [2022-10-17 17:39:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:39,310 INFO L225 Difference]: With dead ends: 256 [2022-10-17 17:39:39,310 INFO L226 Difference]: Without dead ends: 146 [2022-10-17 17:39:39,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-10-17 17:39:39,312 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:39,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 287 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:39:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-10-17 17:39:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 106. [2022-10-17 17:39:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.302325581395349) internal successors, (112), 98 states have internal predecessors, (112), 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) [2022-10-17 17:39:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2022-10-17 17:39:39,336 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 32 [2022-10-17 17:39:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:39,338 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2022-10-17 17:39:39,338 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) [2022-10-17 17:39:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2022-10-17 17:39:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 17:39:39,340 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:39,340 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, 1, 1] [2022-10-17 17:39:39,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:39,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 17:39:39,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2090619909, now seen corresponding path program 1 times [2022-10-17 17:39:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:39,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778007279] [2022-10-17 17:39:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:39:39,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:39,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778007279] [2022-10-17 17:39:39,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778007279] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:39,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510523879] [2022-10-17 17:39:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:39,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:39,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:39,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:39,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:39:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:39,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 17:39:39,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:39:39,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:40,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510523879] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:40,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [673279218] [2022-10-17 17:39:40,160 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-10-17 17:39:40,160 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:40,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:40,160 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:40,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:40,578 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 25 for LOIs [2022-10-17 17:39:40,938 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:39:44,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5080#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (or (and (< |ULTIMATE.start_mulflt_~ma~1#1| abs_171) (= (ite (< |ULTIMATE.start_mulflt_~a#1| 16777215) |ULTIMATE.start_mulflt_~a#1| 16777215) abs_171)) (not (<= 0 |ULTIMATE.start_mulflt_~a#1|))) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (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 [2022-10-17 17:39:44,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:39:44,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:39:44,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 16 [2022-10-17 17:39:44,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933950848] [2022-10-17 17:39:44,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:39:44,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:39:44,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:44,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:39:44,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:39:44,569 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-10-17 17:39:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:45,012 INFO L93 Difference]: Finished difference Result 283 states and 323 transitions. [2022-10-17 17:39:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 17:39:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 43 [2022-10-17 17:39:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:45,014 INFO L225 Difference]: With dead ends: 283 [2022-10-17 17:39:45,014 INFO L226 Difference]: Without dead ends: 160 [2022-10-17 17:39:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2022-10-17 17:39:45,016 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 57 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:45,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 565 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:39:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-10-17 17:39:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 108. [2022-10-17 17:39:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 99 states have internal predecessors, (111), 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) [2022-10-17 17:39:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2022-10-17 17:39:45,030 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 43 [2022-10-17 17:39:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:45,030 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2022-10-17 17:39:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-10-17 17:39:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2022-10-17 17:39:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 17:39:45,031 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:45,031 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] [2022-10-17 17:39:45,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:45,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 17:39:45,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:45,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1775932552, now seen corresponding path program 1 times [2022-10-17 17:39:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:45,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255501468] [2022-10-17 17:39:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:45,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:45,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255501468] [2022-10-17 17:39:45,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255501468] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675300411] [2022-10-17 17:39:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:45,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:45,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:45,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:45,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:39:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:39:45,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:39:45,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:45,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675300411] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:45,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129040037] [2022-10-17 17:39:45,638 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-10-17 17:39:45,638 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:45,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:45,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:45,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:45,960 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-10-17 17:39:46,067 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:39:47,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [129040037] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:47,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:39:47,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 34 [2022-10-17 17:39:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588134314] [2022-10-17 17:39:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-17 17:39:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 17:39:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2022-10-17 17:39:47,495 INFO L87 Difference]: Start difference. First operand 108 states and 119 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) [2022-10-17 17:39:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:48,534 INFO L93 Difference]: Finished difference Result 256 states and 280 transitions. [2022-10-17 17:39:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-17 17:39:48,534 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 [2022-10-17 17:39:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:48,536 INFO L225 Difference]: With dead ends: 256 [2022-10-17 17:39:48,536 INFO L226 Difference]: Without dead ends: 254 [2022-10-17 17:39:48,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-10-17 17:39:48,538 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 312 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:48,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 360 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 17:39:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-10-17 17:39:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 130. [2022-10-17 17:39:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 118 states have internal predecessors, (132), 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) [2022-10-17 17:39:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2022-10-17 17:39:48,564 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 49 [2022-10-17 17:39:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:48,564 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2022-10-17 17:39:48,564 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) [2022-10-17 17:39:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2022-10-17 17:39:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 17:39:48,565 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:48,566 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, 1, 1] [2022-10-17 17:39:48,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:48,779 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash 646679994, now seen corresponding path program 1 times [2022-10-17 17:39:48,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:48,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451723305] [2022-10-17 17:39:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:48,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:48,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451723305] [2022-10-17 17:39:48,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451723305] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:48,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928373304] [2022-10-17 17:39:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:48,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:48,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:48,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:39:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:39:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:39:49,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:49,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928373304] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [744782801] [2022-10-17 17:39:49,457 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-10-17 17:39:49,457 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:49,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:49,458 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:49,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:49,907 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 25 for LOIs [2022-10-17 17:39:50,181 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:39:51,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6704#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (or (and (< |ULTIMATE.start_mulflt_~ma~1#1| abs_171) (= (ite (< |ULTIMATE.start_mulflt_~a#1| 16777215) |ULTIMATE.start_mulflt_~a#1| 16777215) abs_171)) (not (<= 0 |ULTIMATE.start_mulflt_~a#1|))) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (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 [2022-10-17 17:39:51,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:39:51,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:39:51,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-10-17 17:39:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835051720] [2022-10-17 17:39:51,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:39:51,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 17:39:51,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 17:39:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2022-10-17 17:39:51,830 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2022-10-17 17:39:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:52,315 INFO L93 Difference]: Finished difference Result 342 states and 394 transitions. [2022-10-17 17:39:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 17:39:52,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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 52 [2022-10-17 17:39:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:52,319 INFO L225 Difference]: With dead ends: 342 [2022-10-17 17:39:52,320 INFO L226 Difference]: Without dead ends: 240 [2022-10-17 17:39:52,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-10-17 17:39:52,322 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 162 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:52,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 229 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:39:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-10-17 17:39:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 148. [2022-10-17 17:39:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 123 states have (on average 1.2439024390243902) internal successors, (153), 136 states have internal predecessors, (153), 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) [2022-10-17 17:39:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2022-10-17 17:39:52,359 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 52 [2022-10-17 17:39:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:52,359 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2022-10-17 17:39:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2022-10-17 17:39:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2022-10-17 17:39:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 17:39:52,360 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:52,360 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, 1] [2022-10-17 17:39:52,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 17:39:52,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1408420184, now seen corresponding path program 1 times [2022-10-17 17:39:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329129797] [2022-10-17 17:39:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:52,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329129797] [2022-10-17 17:39:52,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329129797] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002546788] [2022-10-17 17:39:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:52,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:52,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:52,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:52,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:39:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:52,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:39:52,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:39:52,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:39:53,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002546788] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:53,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250130657] [2022-10-17 17:39:53,004 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-10-17 17:39:53,004 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:53,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:53,005 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:53,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:53,517 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-10-17 17:39:53,604 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:39:56,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [250130657] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:56,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:39:56,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [6, 6, 6] total 36 [2022-10-17 17:39:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349589869] [2022-10-17 17:39:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:56,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:39:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:39:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2022-10-17 17:39:56,923 INFO L87 Difference]: Start difference. First operand 148 states and 170 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) [2022-10-17 17:39:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:58,314 INFO L93 Difference]: Finished difference Result 272 states and 299 transitions. [2022-10-17 17:39:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-17 17:39:58,314 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 52 [2022-10-17 17:39:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:58,316 INFO L225 Difference]: With dead ends: 272 [2022-10-17 17:39:58,316 INFO L226 Difference]: Without dead ends: 270 [2022-10-17 17:39:58,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=320, Invalid=1572, Unknown=0, NotChecked=0, Total=1892 [2022-10-17 17:39:58,318 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 370 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:58,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 345 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 17:39:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-10-17 17:39:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 150. [2022-10-17 17:39:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 125 states have (on average 1.24) internal successors, (155), 138 states have internal predecessors, (155), 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) [2022-10-17 17:39:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 172 transitions. [2022-10-17 17:39:58,342 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 172 transitions. Word has length 52 [2022-10-17 17:39:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:58,342 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 172 transitions. [2022-10-17 17:39:58,342 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) [2022-10-17 17:39:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 172 transitions. [2022-10-17 17:39:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 17:39:58,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:58,344 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, 1, 1] [2022-10-17 17:39:58,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-17 17:39:58,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:39:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash -232472009, now seen corresponding path program 1 times [2022-10-17 17:39:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606785465] [2022-10-17 17:39:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:39:58,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:58,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606785465] [2022-10-17 17:39:58,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606785465] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:39:58,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096444230] [2022-10-17 17:39:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:58,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:39:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:58,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:39:58,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 17:39:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:58,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:39:58,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 17:39:58,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:39:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:39:59,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096444230] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:39:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236214508] [2022-10-17 17:39:59,006 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-10-17 17:39:59,006 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:39:59,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:39:59,008 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:39:59,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:39:59,324 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 25 for LOIs [2022-10-17 17:39:59,568 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:01,691 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8511#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (or (and (< |ULTIMATE.start_mulflt_~ma~1#1| abs_171) (= (ite (< |ULTIMATE.start_mulflt_~a#1| 16777215) |ULTIMATE.start_mulflt_~a#1| 16777215) abs_171)) (not (<= 0 |ULTIMATE.start_mulflt_~a#1|))) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (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 [2022-10-17 17:40:01,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:40:01,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:01,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-10-17 17:40:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969896030] [2022-10-17 17:40:01,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:40:01,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 17:40:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 17:40:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2022-10-17 17:40:01,693 INFO L87 Difference]: Start difference. First operand 150 states and 172 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 17:40:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:02,001 INFO L93 Difference]: Finished difference Result 410 states and 471 transitions. [2022-10-17 17:40:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:40:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 53 [2022-10-17 17:40:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:02,005 INFO L225 Difference]: With dead ends: 410 [2022-10-17 17:40:02,005 INFO L226 Difference]: Without dead ends: 308 [2022-10-17 17:40:02,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 126 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:40:02,007 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 160 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 296 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:40:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-10-17 17:40:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 152. [2022-10-17 17:40:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 140 states have internal predecessors, (154), 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) [2022-10-17 17:40:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2022-10-17 17:40:02,037 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 53 [2022-10-17 17:40:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:02,037 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2022-10-17 17:40:02,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 17:40:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2022-10-17 17:40:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-17 17:40:02,039 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:02,039 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] [2022-10-17 17:40:02,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:02,259 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:40:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash -658057030, now seen corresponding path program 2 times [2022-10-17 17:40:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194569082] [2022-10-17 17:40:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 17:40:02,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:02,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194569082] [2022-10-17 17:40:02,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194569082] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:02,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218163240] [2022-10-17 17:40:02,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:40:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:02,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:02,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 17:40:02,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-10-17 17:40:02,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:40:02,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 17:40:02,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 17:40:02,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:40:02,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218163240] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:02,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:40:02,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-10-17 17:40:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848083291] [2022-10-17 17:40:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:02,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:40:02,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:40:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:40:02,892 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2022-10-17 17:40:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:03,038 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-10-17 17:40:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:40:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 72 [2022-10-17 17:40:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:03,040 INFO L225 Difference]: With dead ends: 190 [2022-10-17 17:40:03,041 INFO L226 Difference]: Without dead ends: 189 [2022-10-17 17:40:03,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:40:03,042 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 33 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:03,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 360 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-17 17:40:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 158. [2022-10-17 17:40:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 145 states have internal predecessors, (159), 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) [2022-10-17 17:40:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2022-10-17 17:40:03,072 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 72 [2022-10-17 17:40:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:03,073 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2022-10-17 17:40:03,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2022-10-17 17:40:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2022-10-17 17:40:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-17 17:40:03,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:03,075 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, 1, 1] [2022-10-17 17:40:03,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19479b-bcb8-4b3e-8022-4a94e5c65d89/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:03,287 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-17 17:40:03,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2024614089, now seen corresponding path program 2 times [2022-10-17 17:40:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:03,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144825324] [2022-10-17 17:40:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat