./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:04,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:04,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:54:04,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:04,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:04,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:04,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:04,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:04,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:04,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:04,723 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:04,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:04,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:04,727 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:04,727 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:04,728 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:04,728 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:04,728 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:04,729 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:04,729 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:04,730 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:04,730 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:04,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:04,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:04,733 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:04,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:04,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:04,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:04,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:04,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:04,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:04,737 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:54:04,737 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:04,737 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:04,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:04,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:04,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:04,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:04,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:04,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:04,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:04,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:04,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:54:04,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:04,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:04,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:04,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:54:04,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:04,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:04,743 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff [2023-11-24 23:54:05,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:05,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:05,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:05,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:05,132 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:05,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2023-11-24 23:54:08,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:08,708 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:08,709 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2023-11-24 23:54:08,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/data/c7b9eb840/9f87955133ab460582240d3b90904e62/FLAGcae009ca7 [2023-11-24 23:54:08,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/data/c7b9eb840/9f87955133ab460582240d3b90904e62 [2023-11-24 23:54:08,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:08,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:08,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:08,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:08,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:08,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:08" (1/1) ... [2023-11-24 23:54:08,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f34c616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:08, skipping insertion in model container [2023-11-24 23:54:08,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:08" (1/1) ... [2023-11-24 23:54:08,800 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:09,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:09,108 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:54:09,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:09,204 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:54:09,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09 WrapperNode [2023-11-24 23:54:09,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:09,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:09,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:54:09,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:54:09,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,252 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 168 [2023-11-24 23:54:09,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:09,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:54:09,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:54:09,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:54:09,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:54:09,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:54:09,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:54:09,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:54:09,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (1/1) ... [2023-11-24 23:54:09,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:09,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:09,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:54:09,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:54:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:54:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:54:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-24 23:54:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-24 23:54:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:54:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:54:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:54:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:54:09,463 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:54:09,465 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:54:09,971 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:54:10,234 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:54:10,234 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:54:10,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:10 BoogieIcfgContainer [2023-11-24 23:54:10,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:54:10,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:54:10,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:54:10,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:54:10,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:54:08" (1/3) ... [2023-11-24 23:54:10,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4f7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:10, skipping insertion in model container [2023-11-24 23:54:10,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:09" (2/3) ... [2023-11-24 23:54:10,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4f7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:10, skipping insertion in model container [2023-11-24 23:54:10,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:10" (3/3) ... [2023-11-24 23:54:10,252 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2023-11-24 23:54:10,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:54:10,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-24 23:54:10,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:54:10,353 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=LoopHeads, 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;@56e590c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:54:10,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-24 23:54:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 76 states have internal predecessors, (90), 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) [2023-11-24 23:54:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:54:10,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:10,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:10,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:10,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash -856649624, now seen corresponding path program 1 times [2023-11-24 23:54:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:10,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452358354] [2023-11-24 23:54:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:10,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:10,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452358354] [2023-11-24 23:54:10,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452358354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:10,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392782833] [2023-11-24 23:54:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:54:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:54:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:54:10,633 INFO L87 Difference]: Start difference. First operand has 83 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 76 states have internal predecessors, (90), 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) [2023-11-24 23:54:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:10,736 INFO L93 Difference]: Finished difference Result 160 states and 201 transitions. [2023-11-24 23:54:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:54:10,739 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 [2023-11-24 23:54:10,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:10,748 INFO L225 Difference]: With dead ends: 160 [2023-11-24 23:54:10,749 INFO L226 Difference]: Without dead ends: 72 [2023-11-24 23:54:10,756 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 [2023-11-24 23:54:10,761 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:10,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-24 23:54:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-24 23:54:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.553191489361702) internal successors, (73), 66 states have internal predecessors, (73), 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) [2023-11-24 23:54:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-11-24 23:54:10,811 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 8 [2023-11-24 23:54:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:10,811 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-11-24 23:54:10,812 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) [2023-11-24 23:54:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-11-24 23:54:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:54:10,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:10,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:10,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:54:10,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:10,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash -857855486, now seen corresponding path program 1 times [2023-11-24 23:54:10,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:10,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652071655] [2023-11-24 23:54:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:10,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:10,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652071655] [2023-11-24 23:54:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652071655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:54:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801320407] [2023-11-24 23:54:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:10,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:10,946 INFO L87 Difference]: Start difference. First operand 72 states and 81 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) [2023-11-24 23:54:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:11,134 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2023-11-24 23:54:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:11,135 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 [2023-11-24 23:54:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:11,138 INFO L225 Difference]: With dead ends: 190 [2023-11-24 23:54:11,138 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 23:54:11,140 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 [2023-11-24 23:54:11,142 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 67 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:11,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 174 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 23:54:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2023-11-24 23:54:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 101 states have internal predecessors, (124), 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) [2023-11-24 23:54:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2023-11-24 23:54:11,163 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 8 [2023-11-24 23:54:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:11,163 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2023-11-24 23:54:11,164 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) [2023-11-24 23:54:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2023-11-24 23:54:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:54:11,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:11,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:11,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:54:11,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:11,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2112902738, now seen corresponding path program 1 times [2023-11-24 23:54:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163628152] [2023-11-24 23:54:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:11,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:11,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163628152] [2023-11-24 23:54:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163628152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:11,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384522083] [2023-11-24 23:54:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:11,325 INFO L87 Difference]: Start difference. First operand 108 states and 132 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) [2023-11-24 23:54:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:11,519 INFO L93 Difference]: Finished difference Result 240 states and 292 transitions. [2023-11-24 23:54:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:11,520 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 [2023-11-24 23:54:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:11,522 INFO L225 Difference]: With dead ends: 240 [2023-11-24 23:54:11,522 INFO L226 Difference]: Without dead ends: 134 [2023-11-24 23:54:11,524 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 [2023-11-24 23:54:11,525 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 102 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:11,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 227 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:54:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-24 23:54:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2023-11-24 23:54:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.4725274725274726) internal successors, (134), 110 states have internal predecessors, (134), 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) [2023-11-24 23:54:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2023-11-24 23:54:11,542 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 12 [2023-11-24 23:54:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:11,543 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2023-11-24 23:54:11,543 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) [2023-11-24 23:54:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2023-11-24 23:54:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:54:11,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:11,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:11,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:54:11,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 40473826, now seen corresponding path program 1 times [2023-11-24 23:54:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638064240] [2023-11-24 23:54:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:11,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638064240] [2023-11-24 23:54:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638064240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168423810] [2023-11-24 23:54:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:11,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:11,669 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2023-11-24 23:54:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:11,755 INFO L93 Difference]: Finished difference Result 236 states and 286 transitions. [2023-11-24 23:54:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 [2023-11-24 23:54:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:11,758 INFO L225 Difference]: With dead ends: 236 [2023-11-24 23:54:11,758 INFO L226 Difference]: Without dead ends: 121 [2023-11-24 23:54:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:11,761 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 5 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:11,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 198 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-24 23:54:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-24 23:54:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 113 states have internal predecessors, (137), 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) [2023-11-24 23:54:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2023-11-24 23:54:11,775 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 13 [2023-11-24 23:54:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:11,775 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2023-11-24 23:54:11,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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) [2023-11-24 23:54:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2023-11-24 23:54:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:54:11,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:11,777 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:11,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:54:11,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:11,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash -415737314, now seen corresponding path program 1 times [2023-11-24 23:54:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392636617] [2023-11-24 23:54:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:54:11,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392636617] [2023-11-24 23:54:11,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392636617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:11,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:11,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88935703] [2023-11-24 23:54:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:11,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:54:11,827 INFO L87 Difference]: Start difference. First operand 121 states and 145 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:11,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:11,885 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2023-11-24 23:54:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:11,886 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, (3), 1 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 [2023-11-24 23:54:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:11,888 INFO L225 Difference]: With dead ends: 125 [2023-11-24 23:54:11,888 INFO L226 Difference]: Without dead ends: 124 [2023-11-24 23:54:11,889 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 [2023-11-24 23:54:11,890 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 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 [2023-11-24 23:54:11,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-24 23:54:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2023-11-24 23:54:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 111 states have internal predecessors, (134), 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) [2023-11-24 23:54:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2023-11-24 23:54:11,904 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 20 [2023-11-24 23:54:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2023-11-24 23:54:11,905 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2023-11-24 23:54:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:54:11,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:11,907 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:54:11,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1232321227, now seen corresponding path program 1 times [2023-11-24 23:54:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:11,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510255831] [2023-11-24 23:54:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:11,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:12,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510255831] [2023-11-24 23:54:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510255831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525633029] [2023-11-24 23:54:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:12,030 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:12,114 INFO L93 Difference]: Finished difference Result 200 states and 226 transitions. [2023-11-24 23:54:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:54:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:12,117 INFO L225 Difference]: With dead ends: 200 [2023-11-24 23:54:12,117 INFO L226 Difference]: Without dead ends: 109 [2023-11-24 23:54:12,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:12,129 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 31 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:12,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-24 23:54:12,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-11-24 23:54:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 95 states have internal predecessors, (112), 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) [2023-11-24 23:54:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2023-11-24 23:54:12,159 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 19 [2023-11-24 23:54:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:12,160 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2023-11-24 23:54:12,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2023-11-24 23:54:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:54:12,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:12,162 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:54:12,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:12,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -197319503, now seen corresponding path program 1 times [2023-11-24 23:54:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:12,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049213325] [2023-11-24 23:54:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:12,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049213325] [2023-11-24 23:54:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049213325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:12,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129694094] [2023-11-24 23:54:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:12,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:12,295 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:12,454 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2023-11-24 23:54:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:54:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:12,456 INFO L225 Difference]: With dead ends: 111 [2023-11-24 23:54:12,456 INFO L226 Difference]: Without dead ends: 108 [2023-11-24 23:54:12,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:12,458 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:12,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 230 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-24 23:54:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2023-11-24 23:54:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 95 states have internal predecessors, (108), 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) [2023-11-24 23:54:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-11-24 23:54:12,485 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 19 [2023-11-24 23:54:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:12,487 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-11-24 23:54:12,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-11-24 23:54:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:54:12,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:12,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:54:12,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:12,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1178909073, now seen corresponding path program 1 times [2023-11-24 23:54:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723218918] [2023-11-24 23:54:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:54:12,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:12,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723218918] [2023-11-24 23:54:12,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723218918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:54:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880922928] [2023-11-24 23:54:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:12,571 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:12,649 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2023-11-24 23:54:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-24 23:54:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:12,651 INFO L225 Difference]: With dead ends: 115 [2023-11-24 23:54:12,652 INFO L226 Difference]: Without dead ends: 112 [2023-11-24 23:54:12,654 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 [2023-11-24 23:54:12,655 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 13 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:12,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 119 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-24 23:54:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2023-11-24 23:54:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.368421052631579) internal successors, (104), 93 states have internal predecessors, (104), 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) [2023-11-24 23:54:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2023-11-24 23:54:12,678 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 23 [2023-11-24 23:54:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:12,678 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2023-11-24 23:54:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:54:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2023-11-24 23:54:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:54:12,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:12,683 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:54:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:54:12,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:12,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1418329131, now seen corresponding path program 1 times [2023-11-24 23:54:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:12,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155661132] [2023-11-24 23:54:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:12,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:54:12,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:12,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155661132] [2023-11-24 23:54:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155661132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:12,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000240969] [2023-11-24 23:54:12,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:12,837 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-24 23:54:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:12,987 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2023-11-24 23:54:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 33 [2023-11-24 23:54:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:12,993 INFO L225 Difference]: With dead ends: 141 [2023-11-24 23:54:12,993 INFO L226 Difference]: Without dead ends: 138 [2023-11-24 23:54:12,993 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 [2023-11-24 23:54:12,996 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 94 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:12,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 185 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:12,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-24 23:54:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2023-11-24 23:54:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 113 states have internal predecessors, (134), 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) [2023-11-24 23:54:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2023-11-24 23:54:13,010 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2023-11-24 23:54:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:13,011 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2023-11-24 23:54:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-24 23:54:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2023-11-24 23:54:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:54:13,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:13,018 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:54:13,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:54:13,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1446956487, now seen corresponding path program 1 times [2023-11-24 23:54:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740747119] [2023-11-24 23:54:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:54:13,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:13,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740747119] [2023-11-24 23:54:13,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740747119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:13,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:13,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:13,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727808468] [2023-11-24 23:54:13,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:13,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:13,144 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-24 23:54:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:13,281 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2023-11-24 23:54:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 33 [2023-11-24 23:54:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:13,283 INFO L225 Difference]: With dead ends: 140 [2023-11-24 23:54:13,284 INFO L226 Difference]: Without dead ends: 137 [2023-11-24 23:54:13,284 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 [2023-11-24 23:54:13,285 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 98 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:13,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 180 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-24 23:54:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2023-11-24 23:54:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 101 states have (on average 1.3564356435643565) internal successors, (137), 117 states have internal predecessors, (137), 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) [2023-11-24 23:54:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2023-11-24 23:54:13,295 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 33 [2023-11-24 23:54:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:13,296 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2023-11-24 23:54:13,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-24 23:54:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2023-11-24 23:54:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:54:13,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:13,297 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 23:54:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:54:13,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1735131044, now seen corresponding path program 1 times [2023-11-24 23:54:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011630599] [2023-11-24 23:54:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:13,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011630599] [2023-11-24 23:54:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011630599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:54:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870617715] [2023-11-24 23:54:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:13,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:13,514 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:13,650 INFO L93 Difference]: Finished difference Result 292 states and 337 transitions. [2023-11-24 23:54:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:13,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-11-24 23:54:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:13,653 INFO L225 Difference]: With dead ends: 292 [2023-11-24 23:54:13,653 INFO L226 Difference]: Without dead ends: 189 [2023-11-24 23:54:13,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:54:13,654 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 55 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 160 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-24 23:54:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 126. [2023-11-24 23:54:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 117 states have internal predecessors, (136), 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) [2023-11-24 23:54:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2023-11-24 23:54:13,667 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 37 [2023-11-24 23:54:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:13,667 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2023-11-24 23:54:13,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:54:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2023-11-24 23:54:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:54:13,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:13,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:54:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:54:13,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:13,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash 120644354, now seen corresponding path program 1 times [2023-11-24 23:54:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123770337] [2023-11-24 23:54:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:13,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123770337] [2023-11-24 23:54:13,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123770337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639883632] [2023-11-24 23:54:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:13,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:13,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:13,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:13,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:54:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:13,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:54:13,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:14,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639883632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [830132577] [2023-11-24 23:54:14,270 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-24 23:54:14,270 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:14,274 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:14,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:14,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:14,798 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:54:15,051 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:16,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3910#(and (<= |base2flt_#in~e| 127) (<= 1 |#StackHeapBarrier|) (<= (mod base2flt_~m 4294967296) (mod |base2flt_#in~m| 4294967296)) (= base2flt_~e |base2flt_#in~e|) (<= 16777216 (mod |base2flt_#in~m| 4294967296)) (<= 0 base2flt_~e) (<= (mod |base2flt_#in~m| 4294967296) 33554431))' at error location [2023-11-24 23:54:16,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:16,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-24 23:54:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134033110] [2023-11-24 23:54:16,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:54:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:54:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:54:16,042 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:16,578 INFO L93 Difference]: Finished difference Result 486 states and 567 transitions. [2023-11-24 23:54:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 23:54:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-11-24 23:54:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:16,582 INFO L225 Difference]: With dead ends: 486 [2023-11-24 23:54:16,583 INFO L226 Difference]: Without dead ends: 387 [2023-11-24 23:54:16,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=355, Invalid=1285, Unknown=0, NotChecked=0, Total=1640 [2023-11-24 23:54:16,585 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 175 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:16,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 339 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:54:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-24 23:54:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 146. [2023-11-24 23:54:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 121 states have (on average 1.322314049586777) internal successors, (160), 137 states have internal predecessors, (160), 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) [2023-11-24 23:54:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2023-11-24 23:54:16,617 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 38 [2023-11-24 23:54:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:16,617 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2023-11-24 23:54:16,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2023-11-24 23:54:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:54:16,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:16,619 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2023-11-24 23:54:16,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:16,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:54:16,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:16,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -392431916, now seen corresponding path program 1 times [2023-11-24 23:54:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:16,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757897501] [2023-11-24 23:54:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:17,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757897501] [2023-11-24 23:54:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757897501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405870632] [2023-11-24 23:54:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:17,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:17,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:17,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:17,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:54:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:17,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:54:17,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:17,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:17,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405870632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:17,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [819580790] [2023-11-24 23:54:17,360 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-24 23:54:17,361 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:17,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:17,361 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:17,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:17,841 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:54:18,161 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:18,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4907#(and (<= |base2flt_#in~e| 127) (<= 1 |#StackHeapBarrier|) (or (exists ((v_base2flt_~m_82 Int) (|v_base2flt_#t~nondet4_18| Int)) (and (not (= (mod v_base2flt_~m_82 4294967296) 0)) (or (and (= |v_base2flt_#t~nondet4_18| base2flt_~m) (not (= 4278190079 (mod v_base2flt_~m_82 4294967296))) (<= (mod |v_base2flt_#t~nondet4_18| 4294967296) (mod v_base2flt_~m_82 4294967296)) (<= (mod |v_base2flt_#t~nondet4_18| 4294967296) 4278190079)) (and (= v_base2flt_~m_82 base2flt_~m) (= 4278190079 (mod v_base2flt_~m_82 4294967296)))))) (and (= base2flt_~m 0) (exists ((v_base2flt_~m_82 Int)) (= (mod v_base2flt_~m_82 4294967296) 0)))) (<= 0 base2flt_~e) (<= base2flt_~e 127))' at error location [2023-11-24 23:54:18,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:18,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:18,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-24 23:54:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679193477] [2023-11-24 23:54:18,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:54:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:54:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:54:18,802 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:20,164 INFO L93 Difference]: Finished difference Result 391 states and 454 transitions. [2023-11-24 23:54:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:54:20,165 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-24 23:54:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:20,168 INFO L225 Difference]: With dead ends: 391 [2023-11-24 23:54:20,169 INFO L226 Difference]: Without dead ends: 280 [2023-11-24 23:54:20,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:54:20,170 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 150 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:20,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 374 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:54:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-24 23:54:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 146. [2023-11-24 23:54:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 121 states have (on average 1.2892561983471074) internal successors, (156), 137 states have internal predecessors, (156), 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) [2023-11-24 23:54:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 164 transitions. [2023-11-24 23:54:20,185 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 164 transitions. Word has length 42 [2023-11-24 23:54:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 164 transitions. [2023-11-24 23:54:20,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 164 transitions. [2023-11-24 23:54:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-24 23:54:20,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:20,187 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:20,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:54:20,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:20,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1211111678, now seen corresponding path program 2 times [2023-11-24 23:54:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196519511] [2023-11-24 23:54:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:20,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:20,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196519511] [2023-11-24 23:54:20,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196519511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:20,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959836713] [2023-11-24 23:54:20,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:54:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:20,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:20,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:54:20,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-24 23:54:20,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:54:20,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:54:20,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:20,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959836713] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1646142354] [2023-11-24 23:54:21,304 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-24 23:54:21,304 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:21,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:21,305 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:21,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:21,558 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:54:21,716 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:22,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5897#(and (<= |base2flt_#in~e| 127) (<= 1 |#StackHeapBarrier|) (<= (mod base2flt_~m 4294967296) (mod |base2flt_#in~m| 4294967296)) (= base2flt_~e |base2flt_#in~e|) (<= 16777216 (mod |base2flt_#in~m| 4294967296)) (<= 0 base2flt_~e) (<= (mod |base2flt_#in~m| 4294967296) 33554431))' at error location [2023-11-24 23:54:22,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:22,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:22,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-24 23:54:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777243058] [2023-11-24 23:54:22,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 23:54:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 23:54:22,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1385, Unknown=0, NotChecked=0, Total=1806 [2023-11-24 23:54:22,750 INFO L87 Difference]: Start difference. First operand 146 states and 164 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:23,737 INFO L93 Difference]: Finished difference Result 794 states and 935 transitions. [2023-11-24 23:54:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-24 23:54:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2023-11-24 23:54:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:23,742 INFO L225 Difference]: With dead ends: 794 [2023-11-24 23:54:23,742 INFO L226 Difference]: Without dead ends: 695 [2023-11-24 23:54:23,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=973, Invalid=2687, Unknown=0, NotChecked=0, Total=3660 [2023-11-24 23:54:23,747 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 543 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 298 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:54:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-24 23:54:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 186. [2023-11-24 23:54:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 161 states have (on average 1.2670807453416149) internal successors, (204), 177 states have internal predecessors, (204), 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) [2023-11-24 23:54:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 212 transitions. [2023-11-24 23:54:23,774 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 212 transitions. Word has length 58 [2023-11-24 23:54:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:23,774 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 212 transitions. [2023-11-24 23:54:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 212 transitions. [2023-11-24 23:54:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-24 23:54:23,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:23,776 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:23,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:54:23,982 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:54:23,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1780021972, now seen corresponding path program 2 times [2023-11-24 23:54:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:23,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662678788] [2023-11-24 23:54:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:24,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662678788] [2023-11-24 23:54:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662678788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418134260] [2023-11-24 23:54:24,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:54:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:24,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:24,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25b72c7d-fdbd-4eac-b8a7-d30e220686be/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:54:24,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-24 23:54:24,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:54:24,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:54:24,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:29,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 71 refuted. 4 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418134260] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [499326262] [2023-11-24 23:54:44,924 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-24 23:54:44,925 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:44,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:44,925 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:44,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:45,228 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:54:45,483 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:47,768 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7439#(and (<= |base2flt_#in~e| 127) (<= 1 |#StackHeapBarrier|) (<= 0 base2flt_~e) (or (exists ((v_base2flt_~m_150 Int) (|v_base2flt_#t~nondet4_21| Int)) (and (or (and (= 4278190079 (mod v_base2flt_~m_150 4294967296)) (= v_base2flt_~m_150 base2flt_~m)) (and (<= (mod |v_base2flt_#t~nondet4_21| 4294967296) 4278190079) (not (= 4278190079 (mod v_base2flt_~m_150 4294967296))) (<= (mod |v_base2flt_#t~nondet4_21| 4294967296) (mod v_base2flt_~m_150 4294967296)) (= |v_base2flt_#t~nondet4_21| base2flt_~m))) (not (= (mod v_base2flt_~m_150 4294967296) 0)))) (and (= base2flt_~m 0) (exists ((v_base2flt_~m_150 Int)) (= (mod v_base2flt_~m_150 4294967296) 0)))) (<= base2flt_~e 127))' at error location [2023-11-24 23:54:47,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:47,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:47,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 16] total 38 [2023-11-24 23:54:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083341947] [2023-11-24 23:54:47,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-24 23:54:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-24 23:54:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1913, Unknown=3, NotChecked=0, Total=2450 [2023-11-24 23:54:47,772 INFO L87 Difference]: Start difference. First operand 186 states and 212 transitions. Second operand has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:50,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:54:53,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 23:55:01,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []