./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/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_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/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_e1b2e143-3aa6-4e40-adfa-cce710287f5a/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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:41,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:41,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:54:41,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:41,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:41,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:41,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:41,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:41,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:41,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:41,261 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:41,262 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:41,262 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:41,263 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:41,264 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:41,264 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:41,265 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:41,265 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:41,266 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:41,267 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:41,267 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:41,268 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:41,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:41,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:41,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:41,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:41,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:41,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:41,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:41,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:41,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:41,274 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:54:41,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:41,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:41,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:41,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:41,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:41,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:41,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:41,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:41,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:41,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:41,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:54:41,278 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:41,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:41,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:41,279 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:54:41,279 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:41,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:41,280 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_e1b2e143-3aa6-4e40-adfa-cce710287f5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2023-11-24 23:54:41,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:41,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:41,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:41,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:41,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:41,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-11-24 23:54:44,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:44,951 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:44,952 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-11-24 23:54:44,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/data/c5a700ab0/971095813f284edea874f8f9adeba838/FLAGd323b177a [2023-11-24 23:54:44,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/data/c5a700ab0/971095813f284edea874f8f9adeba838 [2023-11-24 23:54:44,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:44,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:44,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:44,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:44,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:44,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:44" (1/1) ... [2023-11-24 23:54:44,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e72b559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:44, skipping insertion in model container [2023-11-24 23:54:44,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:44" (1/1) ... [2023-11-24 23:54:45,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:45,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:45,268 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:54:45,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:45,333 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:54:45,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45 WrapperNode [2023-11-24 23:54:45,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:45,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:45,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:54:45,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:54:45,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,382 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 163 [2023-11-24 23:54:45,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:45,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:54:45,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:54:45,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:54:45,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:54:45,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:54:45,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:54:45,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:54:45,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (1/1) ... [2023-11-24 23:54:45,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:45,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:54:45,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:54:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:54:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:54:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-24 23:54:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-24 23:54:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:54:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:54:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:54:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:54:45,613 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:54:45,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:54:46,096 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:54:46,388 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:54:46,388 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:54:46,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:46 BoogieIcfgContainer [2023-11-24 23:54:46,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:54:46,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:54:46,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:54:46,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:54:46,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:54:44" (1/3) ... [2023-11-24 23:54:46,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c4918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:46, skipping insertion in model container [2023-11-24 23:54:46,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:45" (2/3) ... [2023-11-24 23:54:46,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c4918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:46, skipping insertion in model container [2023-11-24 23:54:46,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:46" (3/3) ... [2023-11-24 23:54:46,406 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2023-11-24 23:54:46,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:54:46,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-24 23:54:46,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:54:46,503 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;@7176df28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:54:46,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 23:54:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 60 states have internal predecessors, (74), 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 23:54:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:54:46,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:46,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:46,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:46,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 7975272, now seen corresponding path program 1 times [2023-11-24 23:54:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:46,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335473861] [2023-11-24 23:54:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:46,777 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 23:54:46,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:46,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335473861] [2023-11-24 23:54:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335473861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:46,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:46,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:46,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029319601] [2023-11-24 23:54:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:46,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:54:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:54:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:54:46,829 INFO L87 Difference]: Start difference. First operand has 67 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 60 states have internal predecessors, (74), 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 23:54:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:46,902 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2023-11-24 23:54:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:54:46,905 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 23:54:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:46,913 INFO L225 Difference]: With dead ends: 128 [2023-11-24 23:54:46,913 INFO L226 Difference]: Without dead ends: 54 [2023-11-24 23:54:46,917 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 23:54:46,921 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:46,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-24 23:54:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-24 23:54:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 48 states have internal predecessors, (54), 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 23:54:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2023-11-24 23:54:46,964 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 8 [2023-11-24 23:54:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:46,964 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2023-11-24 23:54:46,965 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 23:54:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2023-11-24 23:54:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:54:46,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:46,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:54:46,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:46,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 6793218, now seen corresponding path program 1 times [2023-11-24 23:54:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496215612] [2023-11-24 23:54:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:46,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:47,060 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 23:54:47,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496215612] [2023-11-24 23:54:47,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496215612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:47,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:54:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533974884] [2023-11-24 23:54:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:47,064 INFO L87 Difference]: Start difference. First operand 54 states and 62 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 23:54:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:47,189 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2023-11-24 23:54:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:47,190 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 23:54:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:47,193 INFO L225 Difference]: With dead ends: 144 [2023-11-24 23:54:47,193 INFO L226 Difference]: Without dead ends: 92 [2023-11-24 23:54:47,194 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 23:54:47,196 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 55 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:47,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 130 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-24 23:54:47,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2023-11-24 23:54:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 77 states have internal predecessors, (96), 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 23:54:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2023-11-24 23:54:47,212 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 8 [2023-11-24 23:54:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:47,212 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2023-11-24 23:54:47,213 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 23:54:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2023-11-24 23:54:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:54:47,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:47,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:47,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:54:47,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:47,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1265970838, now seen corresponding path program 1 times [2023-11-24 23:54:47,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010075509] [2023-11-24 23:54:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:47,335 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 23:54:47,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010075509] [2023-11-24 23:54:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010075509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:47,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:47,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115047492] [2023-11-24 23:54:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:47,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:47,338 INFO L87 Difference]: Start difference. First operand 84 states and 104 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 23:54:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:47,508 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2023-11-24 23:54:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:47,512 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 23:54:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:47,514 INFO L225 Difference]: With dead ends: 185 [2023-11-24 23:54:47,514 INFO L226 Difference]: Without dead ends: 103 [2023-11-24 23:54:47,515 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 23:54:47,517 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 82 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 171 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-24 23:54:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2023-11-24 23:54:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 83 states have internal predecessors, (102), 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 23:54:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2023-11-24 23:54:47,536 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 12 [2023-11-24 23:54:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:47,536 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2023-11-24 23:54:47,537 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 23:54:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2023-11-24 23:54:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:54:47,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:47,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:47,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:54:47,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:47,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash -590390202, now seen corresponding path program 1 times [2023-11-24 23:54:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:47,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673847525] [2023-11-24 23:54:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:47,626 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 23:54:47,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673847525] [2023-11-24 23:54:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673847525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:47,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:47,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693279992] [2023-11-24 23:54:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:47,630 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:54:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:47,807 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2023-11-24 23:54:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:47,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-24 23:54:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:47,811 INFO L225 Difference]: With dead ends: 105 [2023-11-24 23:54:47,811 INFO L226 Difference]: Without dead ends: 103 [2023-11-24 23:54:47,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:47,822 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:47,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 173 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-24 23:54:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2023-11-24 23:54:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 83 states have internal predecessors, (101), 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 23:54:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2023-11-24 23:54:47,843 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 13 [2023-11-24 23:54:47,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:47,843 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2023-11-24 23:54:47,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:54:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2023-11-24 23:54:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:54:47,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:47,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:54:47,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:47,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 715587309, now seen corresponding path program 1 times [2023-11-24 23:54:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373204722] [2023-11-24 23:54:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:54:47,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373204722] [2023-11-24 23:54:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373204722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:47,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:47,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763279264] [2023-11-24 23:54:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:54:47,885 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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 23:54:47,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:47,928 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2023-11-24 23:54:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:47,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 15 [2023-11-24 23:54:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:47,930 INFO L225 Difference]: With dead ends: 94 [2023-11-24 23:54:47,930 INFO L226 Difference]: Without dead ends: 93 [2023-11-24 23:54:47,931 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 23:54:47,932 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:47,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 98 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-24 23:54:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2023-11-24 23:54:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 80 states have internal predecessors, (97), 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 23:54:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2023-11-24 23:54:47,944 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 15 [2023-11-24 23:54:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:47,944 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2023-11-24 23:54:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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 23:54:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2023-11-24 23:54:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:54:47,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:47,946 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:54:47,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:47,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash 715880061, now seen corresponding path program 1 times [2023-11-24 23:54:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591476716] [2023-11-24 23:54:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:48,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:48,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591476716] [2023-11-24 23:54:48,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591476716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901882159] [2023-11-24 23:54:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:48,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:48,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:48,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:54:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:48,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:48,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:48,218 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 23:54:48,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901882159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:48,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:54:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-24 23:54:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858782470] [2023-11-24 23:54:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:48,225 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 23:54:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:48,313 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2023-11-24 23:54:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2023-11-24 23:54:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:48,316 INFO L225 Difference]: With dead ends: 102 [2023-11-24 23:54:48,316 INFO L226 Difference]: Without dead ends: 101 [2023-11-24 23:54:48,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:54:48,320 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:48,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-24 23:54:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-11-24 23:54:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 82 states have internal predecessors, (100), 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 23:54:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2023-11-24 23:54:48,347 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 15 [2023-11-24 23:54:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:48,347 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2023-11-24 23:54:48,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 23:54:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2023-11-24 23:54:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:54:48,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:48,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:48,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:54:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:54:48,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:48,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 237188788, now seen corresponding path program 1 times [2023-11-24 23:54:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:48,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885544161] [2023-11-24 23:54:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:48,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885544161] [2023-11-24 23:54:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885544161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:48,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:54:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093689142] [2023-11-24 23:54:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:48,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:48,658 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 23:54:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:48,723 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2023-11-24 23:54:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2023-11-24 23:54:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:48,726 INFO L225 Difference]: With dead ends: 106 [2023-11-24 23:54:48,726 INFO L226 Difference]: Without dead ends: 104 [2023-11-24 23:54:48,727 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 23:54:48,728 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:48,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-24 23:54:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2023-11-24 23:54:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 71 states have (on average 1.352112676056338) internal successors, (96), 80 states have internal predecessors, (96), 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 23:54:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2023-11-24 23:54:48,772 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 17 [2023-11-24 23:54:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:48,772 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2023-11-24 23:54:48,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 23:54:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2023-11-24 23:54:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:54:48,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:48,774 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:54:48,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:48,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash -695303669, now seen corresponding path program 1 times [2023-11-24 23:54:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162335251] [2023-11-24 23:54:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:54:48,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162335251] [2023-11-24 23:54:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162335251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:48,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397322499] [2023-11-24 23:54:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:48,836 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 23:54:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:48,969 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2023-11-24 23:54:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:48,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 21 [2023-11-24 23:54:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:48,971 INFO L225 Difference]: With dead ends: 128 [2023-11-24 23:54:48,971 INFO L226 Difference]: Without dead ends: 126 [2023-11-24 23:54:48,971 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 23:54:48,972 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:48,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 137 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-24 23:54:48,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2023-11-24 23:54:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3655913978494623) internal successors, (127), 102 states have internal predecessors, (127), 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 23:54:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2023-11-24 23:54:48,982 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 21 [2023-11-24 23:54:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:48,982 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2023-11-24 23:54:48,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 23:54:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2023-11-24 23:54:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:54:48,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:48,984 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:48,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:54:48,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:48,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash -723931025, now seen corresponding path program 1 times [2023-11-24 23:54:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952927830] [2023-11-24 23:54:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:54:49,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952927830] [2023-11-24 23:54:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952927830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740645348] [2023-11-24 23:54:49,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:49,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:49,038 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 23:54:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:49,146 INFO L93 Difference]: Finished difference Result 122 states and 147 transitions. [2023-11-24 23:54:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 21 [2023-11-24 23:54:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:49,148 INFO L225 Difference]: With dead ends: 122 [2023-11-24 23:54:49,149 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 23:54:49,149 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 23:54:49,150 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:49,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 139 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 23:54:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2023-11-24 23:54:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 97 states have internal predecessors, (119), 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 23:54:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2023-11-24 23:54:49,159 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 21 [2023-11-24 23:54:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:49,160 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-11-24 23:54:49,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (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 23:54:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2023-11-24 23:54:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:54:49,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:49,162 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:49,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:54:49,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:49,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1115916260, now seen corresponding path program 1 times [2023-11-24 23:54:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:49,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338132298] [2023-11-24 23:54:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:54:49,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338132298] [2023-11-24 23:54:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338132298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:49,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:49,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326497732] [2023-11-24 23:54:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:49,222 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:49,332 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2023-11-24 23:54:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-24 23:54:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:49,334 INFO L225 Difference]: With dead ends: 117 [2023-11-24 23:54:49,334 INFO L226 Difference]: Without dead ends: 115 [2023-11-24 23:54:49,335 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 23:54:49,335 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:49,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 130 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-24 23:54:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2023-11-24 23:54:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 93 states have internal predecessors, (114), 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 23:54:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 122 transitions. [2023-11-24 23:54:49,345 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 122 transitions. Word has length 27 [2023-11-24 23:54:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:49,345 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 122 transitions. [2023-11-24 23:54:49,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 122 transitions. [2023-11-24 23:54:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:54:49,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:49,347 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:54:49,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:49,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1087288904, now seen corresponding path program 1 times [2023-11-24 23:54:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907307020] [2023-11-24 23:54:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:54:49,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:49,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907307020] [2023-11-24 23:54:49,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907307020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878695120] [2023-11-24 23:54:49,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:49,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:54:49,412 INFO L87 Difference]: Start difference. First operand 101 states and 122 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:49,539 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2023-11-24 23:54:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-24 23:54:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:49,541 INFO L225 Difference]: With dead ends: 111 [2023-11-24 23:54:49,541 INFO L226 Difference]: Without dead ends: 109 [2023-11-24 23:54:49,542 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 23:54:49,542 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:49,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 130 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:54:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-24 23:54:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2023-11-24 23:54:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.308641975308642) internal successors, (106), 86 states have internal predecessors, (106), 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 23:54:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2023-11-24 23:54:49,553 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 27 [2023-11-24 23:54:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:49,554 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2023-11-24 23:54:49,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:54:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2023-11-24 23:54:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:54:49,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:49,555 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:49,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:54:49,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1726960668, now seen corresponding path program 1 times [2023-11-24 23:54:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569545739] [2023-11-24 23:54:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:54:49,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:49,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569545739] [2023-11-24 23:54:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569545739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672646318] [2023-11-24 23:54:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:49,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:49,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:49,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:49,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:54:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:49,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:54:49,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:54:49,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:54:50,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672646318] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:50,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:50,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2023-11-24 23:54:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138937681] [2023-11-24 23:54:50,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:54:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:54:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:54:50,284 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:50,362 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2023-11-24 23:54:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:54:50,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2023-11-24 23:54:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:50,364 INFO L225 Difference]: With dead ends: 122 [2023-11-24 23:54:50,364 INFO L226 Difference]: Without dead ends: 98 [2023-11-24 23:54:50,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-24 23:54:50,365 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:50,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 238 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:54:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-24 23:54:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2023-11-24 23:54:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 86 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 23:54:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2023-11-24 23:54:50,376 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 31 [2023-11-24 23:54:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2023-11-24 23:54:50,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:54:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2023-11-24 23:54:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:54:50,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:50,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:50,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:54:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:54:50,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:50,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1315572115, now seen corresponding path program 1 times [2023-11-24 23:54:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250459655] [2023-11-24 23:54:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:54:50,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250459655] [2023-11-24 23:54:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250459655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839630179] [2023-11-24 23:54:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:50,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:50,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:50,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:54:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:50,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:54:50,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:54:50,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:54:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839630179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:51,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512319706] [2023-11-24 23:54:51,364 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-24 23:54:51,364 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:51,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:51,373 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:51,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:51,679 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 43 for LOIs [2023-11-24 23:54:51,850 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [512319706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:52,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:52,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 12, 8] total 28 [2023-11-24 23:54:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897553492] [2023-11-24 23:54:52,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:54:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:54:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:54:52,851 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 10 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:54:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:53,129 INFO L93 Difference]: Finished difference Result 208 states and 247 transitions. [2023-11-24 23:54:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:54:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2023-11-24 23:54:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:53,131 INFO L225 Difference]: With dead ends: 208 [2023-11-24 23:54:53,132 INFO L226 Difference]: Without dead ends: 116 [2023-11-24 23:54:53,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:54:53,133 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 63 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:53,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 260 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:54:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-24 23:54:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 88. [2023-11-24 23:54:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 80 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-24 23:54:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2023-11-24 23:54:53,144 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 35 [2023-11-24 23:54:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:53,145 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2023-11-24 23:54:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:54:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2023-11-24 23:54:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 23:54:53,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:53,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:53,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:54:53,357 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1238796034, now seen corresponding path program 1 times [2023-11-24 23:54:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773437307] [2023-11-24 23:54:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:54:53,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:53,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773437307] [2023-11-24 23:54:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773437307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298718507] [2023-11-24 23:54:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:53,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:53,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:53,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:53,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:54:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:53,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:54:53,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:54:53,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:54:54,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298718507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:54,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294139025] [2023-11-24 23:54:54,236 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-24 23:54:54,237 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:54:54,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:54:54,238 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:54:54,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:54:55,272 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:54:55,411 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:54:58,753 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4156#(or (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (= |ULTIMATE.start_main_~sb~0#1| 0) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= 0 |ULTIMATE.start_main_~tmp~2#1|) (<= |ULTIMATE.start_main_~ea~2#1| 127)))' at error location [2023-11-24 23:54:58,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:54:58,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:58,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 8] total 21 [2023-11-24 23:54:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160698508] [2023-11-24 23:54:58,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:58,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-24 23:54:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-24 23:54:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2023-11-24 23:54:58,756 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 21 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-24 23:54:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:59,406 INFO L93 Difference]: Finished difference Result 247 states and 286 transitions. [2023-11-24 23:54:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-24 23:54:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 44 [2023-11-24 23:54:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:59,408 INFO L225 Difference]: With dead ends: 247 [2023-11-24 23:54:59,408 INFO L226 Difference]: Without dead ends: 142 [2023-11-24 23:54:59,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2023-11-24 23:54:59,411 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:59,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 395 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:54:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-24 23:54:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2023-11-24 23:54:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 81 states have internal predecessors, (92), 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 23:54:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2023-11-24 23:54:59,423 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 44 [2023-11-24 23:54:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:59,423 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2023-11-24 23:54:59,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-24 23:54:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2023-11-24 23:54:59,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:54:59,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:59,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:59,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:59,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:59,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:54:59,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2122365718, now seen corresponding path program 1 times [2023-11-24 23:54:59,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:59,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494880340] [2023-11-24 23:54:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:59,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:54:59,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494880340] [2023-11-24 23:54:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494880340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906252115] [2023-11-24 23:54:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:59,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:59,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:59,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:59,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:54:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:59,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:54:59,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:54:59,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:55:00,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906252115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1212338079] [2023-11-24 23:55:00,080 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-24 23:55:00,080 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:00,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:00,081 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:00,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:03,216 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:55:03,349 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:06,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4910#(or (and (= |ULTIMATE.start_main_~sb~0#1| 0) (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_mulflt_~b#1| 4294967295) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_mulflt_#in~b#1| 4294967295) (<= 0 |ULTIMATE.start_mulflt_~b#1|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 |ULTIMATE.start_mulflt_~a#1|) (<= |ULTIMATE.start_main_~one~0#1| 4294967295) (<= |ULTIMATE.start_main_~a~0#1| 4294967295) (<= 0 |ULTIMATE.start_main_~zero~0#1|) (<= 0 |ULTIMATE.start_mulflt_#in~a#1|) (<= 0 |ULTIMATE.start_main_~one~0#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= 0 |ULTIMATE.start_main_~tmp~2#1|) (<= |ULTIMATE.start_main_~zero~0#1| 4294967295) (<= |ULTIMATE.start_mulflt_~a#1| 4294967295) (<= |ULTIMATE.start_main_~b~0#1| 4294967295) (<= |ULTIMATE.start_main_~ea~2#1| 127) (<= 0 |ULTIMATE.start_mulflt_#in~b#1|) (<= |ULTIMATE.start_mulflt_#in~a#1| 4294967295)) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_mulflt_~b#1| 4294967295) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_mulflt_#in~b#1| 4294967295) (<= 0 |ULTIMATE.start_mulflt_~b#1|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 |ULTIMATE.start_mulflt_~a#1|) (<= |ULTIMATE.start_main_~one~0#1| 4294967295) (<= |ULTIMATE.start_main_~a~0#1| 4294967295) (<= 0 |ULTIMATE.start_main_~zero~0#1|) (<= 0 |ULTIMATE.start_mulflt_#in~a#1|) (<= 0 |ULTIMATE.start_main_~one~0#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~zero~0#1| 4294967295) (<= |ULTIMATE.start_mulflt_~a#1| 4294967295) (<= |ULTIMATE.start_main_~b~0#1| 4294967295) (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (<= |ULTIMATE.start_main_~ea~2#1| 127) (<= 0 |ULTIMATE.start_mulflt_#in~b#1|) (<= |ULTIMATE.start_mulflt_#in~a#1| 4294967295)) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_mulflt_~b#1| 4294967295) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_mulflt_#in~b#1| 4294967295) (<= 0 |ULTIMATE.start_mulflt_~b#1|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= |ULTIMATE.start_main_~sb~0#1| 1) (<= 0 |ULTIMATE.start_mulflt_~a#1|) (<= |ULTIMATE.start_main_~one~0#1| 4294967295) (<= |ULTIMATE.start_main_~a~0#1| 4294967295) (<= 0 |ULTIMATE.start_main_~zero~0#1|) (<= 0 |ULTIMATE.start_mulflt_#in~a#1|) (<= 0 |ULTIMATE.start_main_~one~0#1|) (= |ULTIMATE.start_main_~tmp~2#1| 1) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~zero~0#1| 4294967295) (<= |ULTIMATE.start_mulflt_~a#1| 4294967295) (<= |ULTIMATE.start_main_~b~0#1| 4294967295) (<= |ULTIMATE.start_main_~ea~2#1| 127) (<= 0 |ULTIMATE.start_mulflt_#in~b#1|) (<= |ULTIMATE.start_mulflt_#in~a#1| 4294967295)))' at error location [2023-11-24 23:55:06,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:55:06,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:55:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-24 23:55:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939927651] [2023-11-24 23:55:06,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:55:06,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:55:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:06,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:55:06,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2023-11-24 23:55:06,104 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:55:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:06,423 INFO L93 Difference]: Finished difference Result 334 states and 373 transitions. [2023-11-24 23:55:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:55:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-24 23:55:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:06,427 INFO L225 Difference]: With dead ends: 334 [2023-11-24 23:55:06,428 INFO L226 Difference]: Without dead ends: 268 [2023-11-24 23:55:06,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=228, Invalid=1178, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 23:55:06,432 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 78 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:06,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 203 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-24 23:55:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 110. [2023-11-24 23:55:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 101 states have internal predecessors, (116), 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 23:55:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2023-11-24 23:55:06,454 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 52 [2023-11-24 23:55:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:06,455 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2023-11-24 23:55:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:55:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2023-11-24 23:55:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 23:55:06,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:06,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:06,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:06,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 23:55:06,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:06,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1486606063, now seen corresponding path program 1 times [2023-11-24 23:55:06,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939557826] [2023-11-24 23:55:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:55:07,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:07,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939557826] [2023-11-24 23:55:07,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939557826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:07,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139841622] [2023-11-24 23:55:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:07,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:07,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:55:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:07,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 23:55:07,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-24 23:55:07,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139841622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:07,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:55:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2023-11-24 23:55:07,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986460999] [2023-11-24 23:55:07,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:07,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:55:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:55:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:55:07,345 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:55:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:07,615 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2023-11-24 23:55:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:55:07,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2023-11-24 23:55:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:07,618 INFO L225 Difference]: With dead ends: 160 [2023-11-24 23:55:07,618 INFO L226 Difference]: Without dead ends: 157 [2023-11-24 23:55:07,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:55:07,620 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:07,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 320 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-24 23:55:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 131. [2023-11-24 23:55:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 120 states have internal predecessors, (136), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-24 23:55:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2023-11-24 23:55:07,635 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 53 [2023-11-24 23:55:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:07,636 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2023-11-24 23:55:07,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:55:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2023-11-24 23:55:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-24 23:55:07,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:07,638 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:07,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:55:07,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:07,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1159852502, now seen corresponding path program 1 times [2023-11-24 23:55:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281623409] [2023-11-24 23:55:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-24 23:55:08,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281623409] [2023-11-24 23:55:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281623409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:08,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:08,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:08,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145424449] [2023-11-24 23:55:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:08,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:08,187 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:08,272 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2023-11-24 23:55:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2023-11-24 23:55:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:08,274 INFO L225 Difference]: With dead ends: 131 [2023-11-24 23:55:08,276 INFO L226 Difference]: Without dead ends: 123 [2023-11-24 23:55:08,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:08,278 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:08,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 140 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-24 23:55:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-24 23:55:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 112 states have internal predecessors, (126), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-24 23:55:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2023-11-24 23:55:08,295 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 54 [2023-11-24 23:55:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2023-11-24 23:55:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2023-11-24 23:55:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 23:55:08,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:08,298 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 23:55:08,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2025471693, now seen corresponding path program 1 times [2023-11-24 23:55:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426630238] [2023-11-24 23:55:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:08,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426630238] [2023-11-24 23:55:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426630238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710425945] [2023-11-24 23:55:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:08,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:08,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:08,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:55:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:08,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 23:55:08,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:55:09,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710425945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684810124] [2023-11-24 23:55:09,344 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-24 23:55:09,344 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:09,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:09,345 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:09,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:10,054 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:55:10,204 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:11,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6595#(or (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (= |ULTIMATE.start_main_~sb~0#1| 0) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= 0 |ULTIMATE.start_main_~tmp~2#1|) (<= |ULTIMATE.start_main_~ea~2#1| 127)))' at error location [2023-11-24 23:55:11,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:55:11,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:55:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2023-11-24 23:55:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005253346] [2023-11-24 23:55:11,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:55:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:55:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:55:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2023-11-24 23:55:11,510 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:55:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:12,274 INFO L93 Difference]: Finished difference Result 300 states and 342 transitions. [2023-11-24 23:55:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 23:55:12,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-11-24 23:55:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:12,276 INFO L225 Difference]: With dead ends: 300 [2023-11-24 23:55:12,276 INFO L226 Difference]: Without dead ends: 215 [2023-11-24 23:55:12,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 23:55:12,278 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 86 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:12,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 224 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:55:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-24 23:55:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 123. [2023-11-24 23:55:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 112 states have internal predecessors, (122), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-24 23:55:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2023-11-24 23:55:12,295 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 55 [2023-11-24 23:55:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:12,295 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2023-11-24 23:55:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:55:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2023-11-24 23:55:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-24 23:55:12,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:12,297 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:12,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 23:55:12,502 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:12,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:12,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1704800308, now seen corresponding path program 1 times [2023-11-24 23:55:12,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:12,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647648402] [2023-11-24 23:55:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:12,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647648402] [2023-11-24 23:55:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647648402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143800796] [2023-11-24 23:55:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:12,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:12,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:12,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:55:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:12,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:55:12,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:55:12,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143800796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444330067] [2023-11-24 23:55:13,336 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-24 23:55:13,336 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:13,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:13,337 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:13,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:13,974 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-24 23:55:14,103 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:15,360 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7571#(or (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127)) (and (= |ULTIMATE.start_main_~sb~0#1| 0) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= 0 |ULTIMATE.start_main_~tmp~2#1|) (<= |ULTIMATE.start_main_~ea~2#1| 127)))' at error location [2023-11-24 23:55:15,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:55:15,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:55:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-24 23:55:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164530035] [2023-11-24 23:55:15,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:55:15,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 23:55:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 23:55:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2023-11-24 23:55:15,364 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:55:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:15,818 INFO L93 Difference]: Finished difference Result 580 states and 663 transitions. [2023-11-24 23:55:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-24 23:55:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-11-24 23:55:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:15,823 INFO L225 Difference]: With dead ends: 580 [2023-11-24 23:55:15,824 INFO L226 Difference]: Without dead ends: 501 [2023-11-24 23:55:15,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=501, Invalid=1479, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 23:55:15,826 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 227 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:15,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 174 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-11-24 23:55:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 163. [2023-11-24 23:55:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 148 states have (on average 1.1486486486486487) internal successors, (170), 152 states have internal predecessors, (170), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-24 23:55:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2023-11-24 23:55:15,873 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 74 [2023-11-24 23:55:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:15,874 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2023-11-24 23:55:15,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:55:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2023-11-24 23:55:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-24 23:55:15,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:15,876 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:15,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:16,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,082 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:16,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1564486605, now seen corresponding path program 2 times [2023-11-24 23:55:16,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:16,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798714304] [2023-11-24 23:55:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:16,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798714304] [2023-11-24 23:55:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798714304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282897575] [2023-11-24 23:55:16,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:55:16,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:16,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:16,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:55:16,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 23:55:16,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:55:16,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 23:55:16,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-24 23:55:18,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282897575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:55:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2023-11-24 23:55:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783392412] [2023-11-24 23:55:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:55:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:55:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:55:18,641 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 12 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:19,761 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2023-11-24 23:55:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 23:55:19,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2023-11-24 23:55:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:19,763 INFO L225 Difference]: With dead ends: 181 [2023-11-24 23:55:19,763 INFO L226 Difference]: Without dead ends: 180 [2023-11-24 23:55:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:55:19,765 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:19,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 306 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:55:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-24 23:55:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 162. [2023-11-24 23:55:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 151 states have internal predecessors, (169), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-24 23:55:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2023-11-24 23:55:19,799 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 75 [2023-11-24 23:55:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:19,799 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2023-11-24 23:55:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2023-11-24 23:55:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:55:19,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:19,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:19,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:20,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:20,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -667600264, now seen corresponding path program 1 times [2023-11-24 23:55:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75984323] [2023-11-24 23:55:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 23:55:20,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75984323] [2023-11-24 23:55:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75984323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364139831] [2023-11-24 23:55:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:20,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:20,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:20,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:20,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:55:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:20,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-24 23:55:20,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-24 23:55:20,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364139831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:20,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:55:20,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-11-24 23:55:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054310324] [2023-11-24 23:55:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:55:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:55:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:55:20,813 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand has 11 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:55:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:21,102 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2023-11-24 23:55:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:55:21,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2023-11-24 23:55:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:21,104 INFO L225 Difference]: With dead ends: 181 [2023-11-24 23:55:21,104 INFO L226 Difference]: Without dead ends: 170 [2023-11-24 23:55:21,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:55:21,106 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:21,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 278 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-24 23:55:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 152. [2023-11-24 23:55:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 142 states have internal predecessors, (159), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-24 23:55:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2023-11-24 23:55:21,130 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 76 [2023-11-24 23:55:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:21,130 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2023-11-24 23:55:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:55:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2023-11-24 23:55:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-24 23:55:21,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:21,132 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:21,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-24 23:55:21,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:21,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash -233067435, now seen corresponding path program 1 times [2023-11-24 23:55:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965213732] [2023-11-24 23:55:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-24 23:55:21,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965213732] [2023-11-24 23:55:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965213732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:21,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:21,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417259799] [2023-11-24 23:55:21,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:21,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:21,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:21,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:21,426 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:21,500 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2023-11-24 23:55:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2023-11-24 23:55:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:21,502 INFO L225 Difference]: With dead ends: 152 [2023-11-24 23:55:21,502 INFO L226 Difference]: Without dead ends: 145 [2023-11-24 23:55:21,504 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 23:55:21,505 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:21,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-24 23:55:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-24 23:55:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 135 states have internal predecessors, (152), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-24 23:55:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2023-11-24 23:55:21,530 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 77 [2023-11-24 23:55:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:21,531 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2023-11-24 23:55:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2023-11-24 23:55:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:55:21,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:21,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:21,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 23:55:21,533 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-24 23:55:21,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1364844310, now seen corresponding path program 1 times [2023-11-24 23:55:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538341328] [2023-11-24 23:55:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:21,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-24 23:55:22,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538341328] [2023-11-24 23:55:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538341328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702277219] [2023-11-24 23:55:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:22,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:22,059 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:22,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:55:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:22,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-24 23:55:22,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-24 23:55:22,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-24 23:55:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702277219] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:22,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:22,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 14] total 27 [2023-11-24 23:55:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456981045] [2023-11-24 23:55:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:55:22,957 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:23,071 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2023-11-24 23:55:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:23,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 78 [2023-11-24 23:55:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:23,072 INFO L225 Difference]: With dead ends: 145 [2023-11-24 23:55:23,072 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:55:23,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2023-11-24 23:55:23,074 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:23,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 131 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:55:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:55:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:55:23,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2023-11-24 23:55:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:23,076 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:55:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:55:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:55:23,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:55:23,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-24 23:55:23,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-24 23:55:23,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-24 23:55:23,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-24 23:55:23,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-24 23:55:23,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-24 23:55:23,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-24 23:55:23,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-24 23:55:23,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-24 23:55:23,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-24 23:55:23,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-11-24 23:55:23,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-11-24 23:55:23,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-24 23:55:23,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-24 23:55:23,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-24 23:55:23,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-24 23:55:23,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b2e143-3aa6-4e40-adfa-cce710287f5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-24 23:55:23,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.