./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire --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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:09,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:09,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 20:35:09,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:09,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:09,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:09,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:09,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:09,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:09,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:09,672 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:09,673 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:09,673 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:09,675 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:09,676 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:09,676 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:09,677 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:09,677 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:09,678 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:09,678 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:09,679 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:09,680 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:09,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:09,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:09,682 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:35:09,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:09,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:35:09,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:09,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:09,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:09,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:09,686 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:35:09,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:35:09,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:35:09,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:09,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:09,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:09,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:09,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:09,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:09,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:09,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:09,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:09,691 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:09,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:09,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:09,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:09,692 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:09,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:09,692 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_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2023-11-23 20:35:10,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:10,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:10,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:10,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:10,128 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:10,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2023-11-23 20:35:13,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:13,910 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:13,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2023-11-23 20:35:13,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/data/71a591c81/181f5eed5a934c4ebb0c0584f4607d51/FLAG6a26054f8 [2023-11-23 20:35:13,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/data/71a591c81/181f5eed5a934c4ebb0c0584f4607d51 [2023-11-23 20:35:13,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:13,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:13,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:13,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:13,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:13,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:13" (1/1) ... [2023-11-23 20:35:13,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6783e5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:13, skipping insertion in model container [2023-11-23 20:35:13,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:13" (1/1) ... [2023-11-23 20:35:14,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:14,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:14,415 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:14,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:14,495 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:14,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14 WrapperNode [2023-11-23 20:35:14,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:14,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:14,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:14,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:14,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,569 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 165 [2023-11-23 20:35:14,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:14,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:14,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:14,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:14,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:14,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:14,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:14,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:14,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (1/1) ... [2023-11-23 20:35:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:14,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:14,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-23 20:35:14,760 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-23 20:35:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:35:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:35:14,868 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:14,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:15,420 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:15,701 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:15,702 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:35:15,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:15 BoogieIcfgContainer [2023-11-23 20:35:15,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:15,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:15,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:15,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:15,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:13" (1/3) ... [2023-11-23 20:35:15,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77249cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:15, skipping insertion in model container [2023-11-23 20:35:15,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:14" (2/3) ... [2023-11-23 20:35:15,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77249cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:15, skipping insertion in model container [2023-11-23 20:35:15,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:15" (3/3) ... [2023-11-23 20:35:15,725 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2023-11-23 20:35:15,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:15,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-23 20:35:15,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:15,812 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;@20c27f36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:15,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-23 20:35:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:35:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:35:15,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:15,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:15,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:15,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash -691019163, now seen corresponding path program 1 times [2023-11-23 20:35:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:15,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245594686] [2023-11-23 20:35:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:16,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245594686] [2023-11-23 20:35:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245594686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308746023] [2023-11-23 20:35:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:35:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:35:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:16,138 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:35:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:16,273 INFO L93 Difference]: Finished difference Result 136 states and 177 transitions. [2023-11-23 20:35:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:35:16,277 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 [2023-11-23 20:35:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:16,288 INFO L225 Difference]: With dead ends: 136 [2023-11-23 20:35:16,289 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 20:35:16,295 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 [2023-11-23 20:35:16,301 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:16,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 20:35:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-23 20:35:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 54 states have internal predecessors, (61), 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) [2023-11-23 20:35:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2023-11-23 20:35:16,363 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 8 [2023-11-23 20:35:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:16,364 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2023-11-23 20:35:16,364 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) [2023-11-23 20:35:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2023-11-23 20:35:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:35:16,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:16,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:16,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:16,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash -692199326, now seen corresponding path program 1 times [2023-11-23 20:35:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175170323] [2023-11-23 20:35:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:16,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175170323] [2023-11-23 20:35:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175170323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:16,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540340789] [2023-11-23 20:35:16,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:35:16,498 INFO L87 Difference]: Start difference. First operand 60 states and 69 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) [2023-11-23 20:35:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:16,670 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2023-11-23 20:35:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:16,671 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 [2023-11-23 20:35:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:16,676 INFO L225 Difference]: With dead ends: 156 [2023-11-23 20:35:16,676 INFO L226 Difference]: Without dead ends: 98 [2023-11-23 20:35:16,678 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 [2023-11-23 20:35:16,680 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 55 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:16,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 148 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-23 20:35:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2023-11-23 20:35:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 83 states have internal predecessors, (103), 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) [2023-11-23 20:35:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2023-11-23 20:35:16,706 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 8 [2023-11-23 20:35:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:16,707 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2023-11-23 20:35:16,707 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) [2023-11-23 20:35:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2023-11-23 20:35:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:35:16,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:16,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:16,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:35:16,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:16,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1974609431, now seen corresponding path program 1 times [2023-11-23 20:35:16,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:16,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036526888] [2023-11-23 20:35:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:16,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036526888] [2023-11-23 20:35:16,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036526888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511188901] [2023-11-23 20:35:16,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:16,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:16,971 INFO L87 Difference]: Start difference. First operand 90 states and 111 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) [2023-11-23 20:35:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:17,175 INFO L93 Difference]: Finished difference Result 197 states and 244 transitions. [2023-11-23 20:35:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:17,180 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 [2023-11-23 20:35:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:17,189 INFO L225 Difference]: With dead ends: 197 [2023-11-23 20:35:17,189 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 20:35:17,190 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 [2023-11-23 20:35:17,192 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 92 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:17,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 156 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 20:35:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2023-11-23 20:35:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 89 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:35:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2023-11-23 20:35:17,234 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 12 [2023-11-23 20:35:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:17,234 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2023-11-23 20:35:17,235 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) [2023-11-23 20:35:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2023-11-23 20:35:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:35:17,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:17,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:35:17,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1083350105, now seen corresponding path program 1 times [2023-11-23 20:35:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334605357] [2023-11-23 20:35:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:17,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:17,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334605357] [2023-11-23 20:35:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334605357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:17,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:17,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:17,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784019486] [2023-11-23 20:35:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:17,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:17,457 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (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) [2023-11-23 20:35:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:17,641 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2023-11-23 20:35:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:17,642 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 [2023-11-23 20:35:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:17,643 INFO L225 Difference]: With dead ends: 111 [2023-11-23 20:35:17,644 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 20:35:17,645 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 [2023-11-23 20:35:17,658 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:17,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 197 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 20:35:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2023-11-23 20:35:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 89 states have internal predecessors, (108), 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) [2023-11-23 20:35:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-11-23 20:35:17,682 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 13 [2023-11-23 20:35:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:17,682 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-11-23 20:35:17,683 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) [2023-11-23 20:35:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-11-23 20:35:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:35:17,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:17,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:17,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:35:17,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:17,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -573400435, now seen corresponding path program 1 times [2023-11-23 20:35:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060809638] [2023-11-23 20:35:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:35:17,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:17,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060809638] [2023-11-23 20:35:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060809638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497406351] [2023-11-23 20:35:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:17,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:17,740 INFO L87 Difference]: Start difference. First operand 96 states and 116 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) [2023-11-23 20:35:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:17,801 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2023-11-23 20:35:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:17,802 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 [2023-11-23 20:35:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:17,803 INFO L225 Difference]: With dead ends: 100 [2023-11-23 20:35:17,804 INFO L226 Difference]: Without dead ends: 99 [2023-11-23 20:35:17,804 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 [2023-11-23 20:35:17,812 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:17,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 110 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-23 20:35:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2023-11-23 20:35:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 86 states have internal predecessors, (104), 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) [2023-11-23 20:35:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2023-11-23 20:35:17,838 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 15 [2023-11-23 20:35:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:17,838 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2023-11-23 20:35:17,839 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) [2023-11-23 20:35:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2023-11-23 20:35:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:35:17,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:17,850 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:17,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:35:17,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:17,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:17,852 INFO L85 PathProgramCache]: Analyzing trace with hash -573106722, now seen corresponding path program 1 times [2023-11-23 20:35:17,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110577212] [2023-11-23 20:35:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:18,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110577212] [2023-11-23 20:35:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110577212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122877942] [2023-11-23 20:35:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:18,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:18,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:35:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:18,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:35:18,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:18,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122877942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-23 20:35:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692925574] [2023-11-23 20:35:18,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:18,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:35:18,188 INFO L87 Difference]: Start difference. First operand 93 states and 112 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) [2023-11-23 20:35:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:18,274 INFO L93 Difference]: Finished difference Result 108 states and 134 transitions. [2023-11-23 20:35:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:18,275 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 [2023-11-23 20:35:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:18,277 INFO L225 Difference]: With dead ends: 108 [2023-11-23 20:35:18,277 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 20:35:18,277 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 [2023-11-23 20:35:18,278 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:18,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 170 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 20:35:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2023-11-23 20:35:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 88 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:35:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2023-11-23 20:35:18,293 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 15 [2023-11-23 20:35:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2023-11-23 20:35:18,294 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) [2023-11-23 20:35:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2023-11-23 20:35:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:35:18,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:18,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:18,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:18,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:18,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1529451917, now seen corresponding path program 1 times [2023-11-23 20:35:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122681804] [2023-11-23 20:35:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:35:18,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122681804] [2023-11-23 20:35:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122681804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:18,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750505623] [2023-11-23 20:35:18,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:35:18,610 INFO L87 Difference]: Start difference. First operand 95 states and 115 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) [2023-11-23 20:35:18,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:18,701 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2023-11-23 20:35:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:18,702 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 [2023-11-23 20:35:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:18,704 INFO L225 Difference]: With dead ends: 112 [2023-11-23 20:35:18,705 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 20:35:18,705 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 [2023-11-23 20:35:18,707 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 8 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:18,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 157 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 20:35:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2023-11-23 20:35:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 86 states have internal predecessors, (103), 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) [2023-11-23 20:35:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2023-11-23 20:35:18,742 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 17 [2023-11-23 20:35:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:18,742 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2023-11-23 20:35:18,743 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) [2023-11-23 20:35:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2023-11-23 20:35:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:35:18,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:18,746 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:35:18,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:18,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1028036507, now seen corresponding path program 1 times [2023-11-23 20:35:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:18,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594315380] [2023-11-23 20:35:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 20:35:18,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594315380] [2023-11-23 20:35:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594315380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633610019] [2023-11-23 20:35:18,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:18,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:18,888 INFO L87 Difference]: Start difference. First operand 93 states and 111 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) [2023-11-23 20:35:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:19,036 INFO L93 Difference]: Finished difference Result 134 states and 162 transitions. [2023-11-23 20:35:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:19,037 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 [2023-11-23 20:35:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:19,040 INFO L225 Difference]: With dead ends: 134 [2023-11-23 20:35:19,040 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 20:35:19,041 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 [2023-11-23 20:35:19,042 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 79 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:19,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 155 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 20:35:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2023-11-23 20:35:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 108 states have internal predecessors, (134), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:35:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-11-23 20:35:19,058 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 21 [2023-11-23 20:35:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:19,059 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-11-23 20:35:19,060 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) [2023-11-23 20:35:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-11-23 20:35:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:35:19,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:19,061 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:19,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 20:35:19,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:19,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1056663863, now seen corresponding path program 1 times [2023-11-23 20:35:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858105693] [2023-11-23 20:35:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 20:35:19,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858105693] [2023-11-23 20:35:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858105693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:19,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:19,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738544457] [2023-11-23 20:35:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:19,134 INFO L87 Difference]: Start difference. First operand 116 states and 142 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) [2023-11-23 20:35:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:19,266 INFO L93 Difference]: Finished difference Result 128 states and 154 transitions. [2023-11-23 20:35:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:19,267 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 [2023-11-23 20:35:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:19,269 INFO L225 Difference]: With dead ends: 128 [2023-11-23 20:35:19,270 INFO L226 Difference]: Without dead ends: 126 [2023-11-23 20:35:19,270 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 [2023-11-23 20:35:19,271 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 78 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:19,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 157 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-23 20:35:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2023-11-23 20:35:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 103 states have internal predecessors, (126), 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) [2023-11-23 20:35:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2023-11-23 20:35:19,284 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 21 [2023-11-23 20:35:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2023-11-23 20:35:19,285 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) [2023-11-23 20:35:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2023-11-23 20:35:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 20:35:19,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:19,287 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] [2023-11-23 20:35:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 20:35:19,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:19,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 747156731, now seen corresponding path program 1 times [2023-11-23 20:35:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559935393] [2023-11-23 20:35:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:35:19,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:19,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559935393] [2023-11-23 20:35:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559935393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:19,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996659312] [2023-11-23 20:35:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:19,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:19,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:19,357 INFO L87 Difference]: Start difference. First operand 111 states and 134 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) [2023-11-23 20:35:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:19,491 INFO L93 Difference]: Finished difference Result 123 states and 149 transitions. [2023-11-23 20:35:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:19,492 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 [2023-11-23 20:35:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:19,494 INFO L225 Difference]: With dead ends: 123 [2023-11-23 20:35:19,494 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 20:35:19,495 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 [2023-11-23 20:35:19,495 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 77 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:19,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 148 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 20:35:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 107. [2023-11-23 20:35:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 99 states have internal predecessors, (121), 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) [2023-11-23 20:35:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2023-11-23 20:35:19,508 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 27 [2023-11-23 20:35:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:19,509 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2023-11-23 20:35:19,509 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) [2023-11-23 20:35:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2023-11-23 20:35:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 20:35:19,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:19,511 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] [2023-11-23 20:35:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 20:35:19,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:19,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash 718529375, now seen corresponding path program 1 times [2023-11-23 20:35:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215162277] [2023-11-23 20:35:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:35:19,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:19,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215162277] [2023-11-23 20:35:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215162277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:19,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:19,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673978389] [2023-11-23 20:35:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:19,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:19,578 INFO L87 Difference]: Start difference. First operand 107 states and 129 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) [2023-11-23 20:35:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:19,714 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2023-11-23 20:35:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:19,715 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 [2023-11-23 20:35:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:19,717 INFO L225 Difference]: With dead ends: 117 [2023-11-23 20:35:19,717 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 20:35:19,718 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 [2023-11-23 20:35:19,718 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 76 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:19,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 148 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 20:35:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 100. [2023-11-23 20:35:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 92 states have internal predecessors, (113), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:35:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2023-11-23 20:35:19,730 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 27 [2023-11-23 20:35:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:19,731 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2023-11-23 20:35:19,731 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) [2023-11-23 20:35:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2023-11-23 20:35:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:35:19,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:19,733 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] [2023-11-23 20:35:19,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 20:35:19,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:19,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash -294220449, now seen corresponding path program 1 times [2023-11-23 20:35:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065969833] [2023-11-23 20:35:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:19,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065969833] [2023-11-23 20:35:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065969833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652638791] [2023-11-23 20:35:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:19,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:19,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:19,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:35:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:19,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:35:19,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:35:19,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652638791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 20:35:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043628760] [2023-11-23 20:35:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:19,999 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:20,116 INFO L93 Difference]: Finished difference Result 233 states and 282 transitions. [2023-11-23 20:35:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:35:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-11-23 20:35:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:20,118 INFO L225 Difference]: With dead ends: 233 [2023-11-23 20:35:20,118 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 20:35:20,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:35:20,120 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:20,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 123 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 20:35:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 104. [2023-11-23 20:35:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 95 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) [2023-11-23 20:35:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2023-11-23 20:35:20,133 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 31 [2023-11-23 20:35:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:20,134 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2023-11-23 20:35:20,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2023-11-23 20:35:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 20:35:20,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:20,135 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, 1, 1] [2023-11-23 20:35:20,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 20:35:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 20:35:20,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:20,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1956412857, now seen corresponding path program 1 times [2023-11-23 20:35:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832511284] [2023-11-23 20:35:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:20,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:20,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832511284] [2023-11-23 20:35:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832511284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423726206] [2023-11-23 20:35:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:20,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:20,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:35:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:20,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 20:35:20,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 20:35:20,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423726206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:20,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:20,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-11-23 20:35:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760747353] [2023-11-23 20:35:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:35:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:35:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:35:20,794 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-23 20:35:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:20,915 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2023-11-23 20:35:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:35:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 37 [2023-11-23 20:35:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:20,918 INFO L225 Difference]: With dead ends: 168 [2023-11-23 20:35:20,918 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 20:35:20,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:35:20,920 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 30 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:20,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 377 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 20:35:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2023-11-23 20:35:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 100 states have internal predecessors, (119), 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) [2023-11-23 20:35:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2023-11-23 20:35:20,933 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 37 [2023-11-23 20:35:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:20,934 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2023-11-23 20:35:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-23 20:35:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2023-11-23 20:35:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 20:35:20,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:20,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-23 20:35:20,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:21,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 20:35:21,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:21,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash -106198922, now seen corresponding path program 1 times [2023-11-23 20:35:21,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:21,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095860786] [2023-11-23 20:35:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:21,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:21,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095860786] [2023-11-23 20:35:21,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095860786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:21,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195880375] [2023-11-23 20:35:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:21,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:21,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:35:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:21,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:35:21,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:35:21,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195880375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 20:35:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160352027] [2023-11-23 20:35:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:21,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:21,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:35:21,547 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:21,709 INFO L93 Difference]: Finished difference Result 227 states and 269 transitions. [2023-11-23 20:35:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-23 20:35:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:21,712 INFO L225 Difference]: With dead ends: 227 [2023-11-23 20:35:21,712 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 20:35:21,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:35:21,714 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:21,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 20:35:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 110. [2023-11-23 20:35:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 100 states have internal predecessors, (118), 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) [2023-11-23 20:35:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2023-11-23 20:35:21,729 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 41 [2023-11-23 20:35:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:21,730 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2023-11-23 20:35:21,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2023-11-23 20:35:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 20:35:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:21,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-11-23 20:35:21,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:21,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 20:35:21,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:21,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1804716570, now seen corresponding path program 1 times [2023-11-23 20:35:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050013683] [2023-11-23 20:35:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:22,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:22,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050013683] [2023-11-23 20:35:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050013683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:22,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632006188] [2023-11-23 20:35:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:22,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:22,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:22,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:35:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:22,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:35:22,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:35:22,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632006188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516080874] [2023-11-23 20:35:22,516 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-23 20:35:22,517 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:22,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:22,528 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:22,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:24,918 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 46 for LOIs [2023-11-23 20:35:25,307 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:28,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4717#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 4294967295 |ULTIMATE.start_main_~one~0#1|) (or (and (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_30| Int)) (and (<= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) 16777216)) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) 0)) (<= (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296) (+ (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) 16777216)))) (<= 16777216 (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296))) (and (or (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_30| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) 16777216)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_30| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_30| 4294967296) 0))) (= |ULTIMATE.start_mulflt_~mb~1#1| 16777216))) (<= (+ 2147483649 |ULTIMATE.start_mulflt_~ea~1#1| |ULTIMATE.start_mulflt_~eb~1#1|) 0) (= (+ |ULTIMATE.start_mulflt_~eb~1#1| 128) (mod (div (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 16777216) 4294967296)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127))' at error location [2023-11-23 20:35:28,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:28,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:28,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-23 20:35:28,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148971699] [2023-11-23 20:35:28,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:35:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:35:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2023-11-23 20:35:28,250 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-11-23 20:35:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:28,549 INFO L93 Difference]: Finished difference Result 337 states and 402 transitions. [2023-11-23 20:35:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 20:35:28,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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 44 [2023-11-23 20:35:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:28,553 INFO L225 Difference]: With dead ends: 337 [2023-11-23 20:35:28,554 INFO L226 Difference]: Without dead ends: 259 [2023-11-23 20:35:28,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 20:35:28,558 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 87 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:28,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 167 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-23 20:35:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 125. [2023-11-23 20:35:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 115 states have internal predecessors, (136), 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) [2023-11-23 20:35:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2023-11-23 20:35:28,584 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 44 [2023-11-23 20:35:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:28,585 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2023-11-23 20:35:28,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-11-23 20:35:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2023-11-23 20:35:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 20:35:28,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:28,587 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] [2023-11-23 20:35:28,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 20:35:28,813 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:28,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 867112246, now seen corresponding path program 1 times [2023-11-23 20:35:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:28,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652449606] [2023-11-23 20:35:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:29,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:29,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652449606] [2023-11-23 20:35:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652449606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:29,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402547619] [2023-11-23 20:35:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:29,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:29,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:29,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:35:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:29,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 20:35:29,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 20:35:29,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 20:35:29,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402547619] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:29,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [72283069] [2023-11-23 20:35:29,537 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-23 20:35:29,538 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:29,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:29,538 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:29,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:30,324 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-23 20:35:30,494 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:32,744 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5542#(and (or (and (or (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_34| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296) 0)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_34| Int)) (= 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296)))) (= |ULTIMATE.start_mulflt_~mb~1#1| 16777216)) (and (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_34| Int)) (and (not (= 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296))) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296) 0)) (<= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296) (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (<= (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296) (+ 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_34| 4294967296))))) (<= 16777216 (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= (+ 2147483649 |ULTIMATE.start_mulflt_~ea~1#1| |ULTIMATE.start_mulflt_~eb~1#1|) 0) (= (+ |ULTIMATE.start_mulflt_~eb~1#1| 128) (mod (div (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 16777216) 4294967296)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127))' at error location [2023-11-23 20:35:32,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:32,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:32,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2023-11-23 20:35:32,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94965819] [2023-11-23 20:35:32,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:32,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:35:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:35:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 20:35:32,748 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 20:35:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:33,296 INFO L93 Difference]: Finished difference Result 266 states and 314 transitions. [2023-11-23 20:35:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 20:35:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 44 [2023-11-23 20:35:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:33,300 INFO L225 Difference]: With dead ends: 266 [2023-11-23 20:35:33,300 INFO L226 Difference]: Without dead ends: 152 [2023-11-23 20:35:33,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 20:35:33,303 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 39 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 445 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:35:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-23 20:35:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 96. [2023-11-23 20:35:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.2625) internal successors, (101), 87 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 20:35:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2023-11-23 20:35:33,319 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 44 [2023-11-23 20:35:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:33,320 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2023-11-23 20:35:33,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 20:35:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2023-11-23 20:35:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 20:35:33,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:33,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:33,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:33,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 20:35:33,537 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:33,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash -589696100, now seen corresponding path program 1 times [2023-11-23 20:35:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758479477] [2023-11-23 20:35:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:33,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758479477] [2023-11-23 20:35:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758479477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818007951] [2023-11-23 20:35:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:33,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:33,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:33,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:33,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:35:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:33,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:35:33,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:35:33,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 20:35:34,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818007951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98951266] [2023-11-23 20:35:34,070 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 20:35:34,071 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:34,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:34,072 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:34,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:34,976 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-23 20:35:35,133 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:38,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6289#(and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_mulflt_~b#1| 4294967295) (<= |ULTIMATE.start_main_~eb~2#1| 127) (or (and (<= 16777216 (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_38| Int)) (and (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296) 0)) (<= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296) (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (<= (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296) (+ 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296))) (not (= 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296)))))) (and (or (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_38| Int)) (= 16777216 (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296))) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_38| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_38| 4294967296) 0))) (= |ULTIMATE.start_mulflt_~mb~1#1| 16777216))) (<= 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|) (<= (+ 2147483649 |ULTIMATE.start_mulflt_~ea~1#1| |ULTIMATE.start_mulflt_~eb~1#1|) 0) (<= |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_mulflt_~eb~1#1| 128) (mod (div (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 16777216) 4294967296)) (<= 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 [2023-11-23 20:35:38,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:38,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-23 20:35:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222403379] [2023-11-23 20:35:38,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:38,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:35:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:35:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 20:35:38,926 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 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) [2023-11-23 20:35:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:39,359 INFO L93 Difference]: Finished difference Result 354 states and 405 transitions. [2023-11-23 20:35:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 20:35:39,360 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 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 48 [2023-11-23 20:35:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:39,363 INFO L225 Difference]: With dead ends: 354 [2023-11-23 20:35:39,363 INFO L226 Difference]: Without dead ends: 282 [2023-11-23 20:35:39,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 20:35:39,365 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 96 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:39,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 290 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:35:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-23 20:35:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 116. [2023-11-23 20:35:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 100 states have (on average 1.25) internal successors, (125), 107 states have internal predecessors, (125), 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) [2023-11-23 20:35:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2023-11-23 20:35:39,385 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 48 [2023-11-23 20:35:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:39,385 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2023-11-23 20:35:39,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 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) [2023-11-23 20:35:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2023-11-23 20:35:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 20:35:39,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:39,387 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1] [2023-11-23 20:35:39,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 20:35:39,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:39,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash -953671564, now seen corresponding path program 1 times [2023-11-23 20:35:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:39,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628025071] [2023-11-23 20:35:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 20:35:39,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628025071] [2023-11-23 20:35:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628025071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:39,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:35:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045650353] [2023-11-23 20:35:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:35:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:35:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:39,926 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-23 20:35:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:40,001 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2023-11-23 20:35:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:40,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 49 [2023-11-23 20:35:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:40,003 INFO L225 Difference]: With dead ends: 148 [2023-11-23 20:35:40,003 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 20:35:40,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:35:40,004 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:40,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 274 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 20:35:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-11-23 20:35:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 100 states have (on average 1.23) internal successors, (123), 107 states have internal predecessors, (123), 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) [2023-11-23 20:35:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2023-11-23 20:35:40,018 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 49 [2023-11-23 20:35:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:40,020 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2023-11-23 20:35:40,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-23 20:35:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2023-11-23 20:35:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 20:35:40,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:40,021 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] [2023-11-23 20:35:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 20:35:40,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:40,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1751861283, now seen corresponding path program 2 times [2023-11-23 20:35:40,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:40,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207689698] [2023-11-23 20:35:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:40,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 20:35:40,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207689698] [2023-11-23 20:35:40,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207689698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680832793] [2023-11-23 20:35:40,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:35:40,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:40,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:40,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:40,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:35:40,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 20:35:40,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:35:40,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 20:35:40,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 20:35:40,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:40,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680832793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:40,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:40,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-23 20:35:40,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612591588] [2023-11-23 20:35:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:40,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 20:35:40,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 20:35:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:35:40,901 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2023-11-23 20:35:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:41,234 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2023-11-23 20:35:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:35:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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 53 [2023-11-23 20:35:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:41,236 INFO L225 Difference]: With dead ends: 148 [2023-11-23 20:35:41,236 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 20:35:41,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-23 20:35:41,237 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 30 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:41,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 364 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 20:35:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2023-11-23 20:35:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 108 states have (on average 1.212962962962963) internal successors, (131), 115 states have internal predecessors, (131), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:35:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2023-11-23 20:35:41,257 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 53 [2023-11-23 20:35:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:41,258 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2023-11-23 20:35:41,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2023-11-23 20:35:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2023-11-23 20:35:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 20:35:41,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:41,259 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] [2023-11-23 20:35:41,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:41,476 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:41,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1526874890, now seen corresponding path program 1 times [2023-11-23 20:35:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193746240] [2023-11-23 20:35:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 20:35:41,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193746240] [2023-11-23 20:35:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193746240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826028701] [2023-11-23 20:35:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:41,929 INFO L87 Difference]: Start difference. First operand 125 states and 140 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) [2023-11-23 20:35:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:42,045 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2023-11-23 20:35:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:42,046 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 [2023-11-23 20:35:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:42,047 INFO L225 Difference]: With dead ends: 129 [2023-11-23 20:35:42,047 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 20:35:42,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:42,048 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:42,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 20:35:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2023-11-23 20:35:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 114 states have internal predecessors, (130), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:35:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2023-11-23 20:35:42,062 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 54 [2023-11-23 20:35:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:42,063 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2023-11-23 20:35:42,063 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) [2023-11-23 20:35:42,063 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2023-11-23 20:35:42,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 20:35:42,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:42,064 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, 1] [2023-11-23 20:35:42,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 20:35:42,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:42,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash -88481147, now seen corresponding path program 1 times [2023-11-23 20:35:42,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:42,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047659867] [2023-11-23 20:35:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:42,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 20:35:42,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:42,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047659867] [2023-11-23 20:35:42,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047659867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055383681] [2023-11-23 20:35:42,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:42,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:35:42,146 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-23 20:35:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:42,227 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2023-11-23 20:35:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:42,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 55 [2023-11-23 20:35:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:42,229 INFO L225 Difference]: With dead ends: 124 [2023-11-23 20:35:42,230 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 20:35:42,230 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 [2023-11-23 20:35:42,231 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 17 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:42,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 107 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 20:35:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-23 20:35:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 111 states have internal predecessors, (127), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:35:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2023-11-23 20:35:42,245 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 55 [2023-11-23 20:35:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:42,245 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2023-11-23 20:35:42,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-23 20:35:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2023-11-23 20:35:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 20:35:42,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:42,247 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] [2023-11-23 20:35:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 20:35:42,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:42,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2135356188, now seen corresponding path program 1 times [2023-11-23 20:35:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:42,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16153325] [2023-11-23 20:35:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:42,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 20:35:42,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16153325] [2023-11-23 20:35:42,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16153325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:42,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:35:42,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537159723] [2023-11-23 20:35:42,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:42,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:42,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:42,814 INFO L87 Difference]: Start difference. First operand 121 states and 136 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) [2023-11-23 20:35:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:42,903 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2023-11-23 20:35:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:35:42,904 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 55 [2023-11-23 20:35:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:42,905 INFO L225 Difference]: With dead ends: 121 [2023-11-23 20:35:42,905 INFO L226 Difference]: Without dead ends: 120 [2023-11-23 20:35:42,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:42,910 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:42,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 144 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-23 20:35:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-11-23 20:35:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 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) [2023-11-23 20:35:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2023-11-23 20:35:42,923 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 55 [2023-11-23 20:35:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:42,924 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2023-11-23 20:35:42,924 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) [2023-11-23 20:35:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2023-11-23 20:35:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 20:35:42,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:42,925 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, 1, 1] [2023-11-23 20:35:42,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 20:35:42,926 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:42,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1552051928, now seen corresponding path program 1 times [2023-11-23 20:35:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61131873] [2023-11-23 20:35:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 20:35:43,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61131873] [2023-11-23 20:35:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61131873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396808371] [2023-11-23 20:35:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:43,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:43,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:43,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:35:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:43,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 20:35:43,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 20:35:43,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396808371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2023-11-23 20:35:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994000912] [2023-11-23 20:35:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:35:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:35:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:35:43,488 INFO L87 Difference]: Start difference. First operand 111 states and 126 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) [2023-11-23 20:35:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:43,833 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2023-11-23 20:35:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 20:35:43,834 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 56 [2023-11-23 20:35:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:43,835 INFO L225 Difference]: With dead ends: 170 [2023-11-23 20:35:43,836 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 20:35:43,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-11-23 20:35:43,837 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 101 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:43,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 291 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 20:35:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2023-11-23 20:35:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 106 states have internal predecessors, (119), 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) [2023-11-23 20:35:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2023-11-23 20:35:43,852 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 56 [2023-11-23 20:35:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:43,852 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2023-11-23 20:35:43,853 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) [2023-11-23 20:35:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2023-11-23 20:35:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 20:35:43,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:43,854 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, 1, 1, 1] [2023-11-23 20:35:43,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:44,080 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:44,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1635759423, now seen corresponding path program 1 times [2023-11-23 20:35:44,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312251585] [2023-11-23 20:35:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:44,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312251585] [2023-11-23 20:35:44,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312251585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943405177] [2023-11-23 20:35:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:44,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:44,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:44,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 20:35:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:44,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 20:35:44,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:35:44,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943405177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283452730] [2023-11-23 20:35:45,188 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-11-23 20:35:45,188 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:45,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:45,189 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:45,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:45,860 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-23 20:35:46,076 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:48,242 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9395#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 2147483624 |ULTIMATE.start_mulflt_~ea~1#1|) (or (and (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_42| Int)) (and (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) 16777216)) (<= (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296) (+ (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) 16777216)) (<= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) 0)))) (<= 16777216 (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296))) (and (or (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_42| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) 0)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_42| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_42| 4294967296) 16777216))) (= |ULTIMATE.start_mulflt_~mb~1#1| 16777216))) (= (+ |ULTIMATE.start_mulflt_~eb~1#1| 128) (mod (div (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 16777216) 4294967296)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (<= |ULTIMATE.start_mulflt_~ea~1#1| 2147483647))' at error location [2023-11-23 20:35:48,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:48,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-23 20:35:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268303453] [2023-11-23 20:35:48,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 20:35:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 20:35:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 20:35:48,246 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2023-11-23 20:35:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:48,800 INFO L93 Difference]: Finished difference Result 286 states and 325 transitions. [2023-11-23 20:35:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 20:35:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 58 [2023-11-23 20:35:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:48,803 INFO L225 Difference]: With dead ends: 286 [2023-11-23 20:35:48,803 INFO L226 Difference]: Without dead ends: 208 [2023-11-23 20:35:48,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=279, Invalid=1361, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 20:35:48,806 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 75 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:48,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 200 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:35:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-23 20:35:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2023-11-23 20:35:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 103 states have (on average 1.116504854368932) internal successors, (115), 106 states have internal predecessors, (115), 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) [2023-11-23 20:35:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2023-11-23 20:35:48,824 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 58 [2023-11-23 20:35:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:48,824 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2023-11-23 20:35:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2023-11-23 20:35:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2023-11-23 20:35:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 20:35:48,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:48,826 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, 1, 1, 1] [2023-11-23 20:35:48,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:49,033 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:49,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -794406505, now seen corresponding path program 1 times [2023-11-23 20:35:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713271728] [2023-11-23 20:35:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:49,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713271728] [2023-11-23 20:35:49,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713271728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128469664] [2023-11-23 20:35:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:49,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:49,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:49,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:49,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 20:35:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:49,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:35:49,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:35:49,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128469664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2067501193] [2023-11-23 20:35:49,960 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-11-23 20:35:49,960 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:49,962 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:49,963 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:49,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:50,552 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 11 for LOIs [2023-11-23 20:35:50,769 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:52,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10371#(and (or (and (= |ULTIMATE.start_mulflt_~mb~1#1| 16777216) (or (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_46| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) 0)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_46| Int)) (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) 16777216)))) (and (<= 16777216 (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (exists ((|v_ULTIMATE.start_mulflt_~mb~1#1_46| Int)) (and (<= (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296) (+ (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) 16777216)) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) 0)) (<= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) (mod |ULTIMATE.start_mulflt_~mb~1#1| 4294967296)) (not (= (mod |v_ULTIMATE.start_mulflt_~mb~1#1_46| 4294967296) 16777216)))))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 2147483624 |ULTIMATE.start_mulflt_~ea~1#1|) (= (+ |ULTIMATE.start_mulflt_~eb~1#1| 128) (mod (div (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 16777216) 4294967296)) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (<= |ULTIMATE.start_mulflt_~ea~1#1| 2147483647))' at error location [2023-11-23 20:35:52,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:52,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-23 20:35:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73001047] [2023-11-23 20:35:52,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:52,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 20:35:52,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 20:35:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1711, Unknown=0, NotChecked=0, Total=2162 [2023-11-23 20:35:52,843 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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) [2023-11-23 20:35:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:53,303 INFO L93 Difference]: Finished difference Result 566 states and 646 transitions. [2023-11-23 20:35:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 20:35:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 77 [2023-11-23 20:35:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:53,309 INFO L225 Difference]: With dead ends: 566 [2023-11-23 20:35:53,309 INFO L226 Difference]: Without dead ends: 494 [2023-11-23 20:35:53,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=524, Invalid=1926, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 20:35:53,311 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 264 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 214 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:35:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-23 20:35:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 156. [2023-11-23 20:35:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 143 states have (on average 1.1398601398601398) internal successors, (163), 146 states have internal predecessors, (163), 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) [2023-11-23 20:35:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 175 transitions. [2023-11-23 20:35:53,339 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 175 transitions. Word has length 77 [2023-11-23 20:35:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:53,339 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 175 transitions. [2023-11-23 20:35:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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) [2023-11-23 20:35:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 175 transitions. [2023-11-23 20:35:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 20:35:53,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:53,341 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] [2023-11-23 20:35:53,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:53,556 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:53,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1481989441, now seen corresponding path program 2 times [2023-11-23 20:35:53,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073932539] [2023-11-23 20:35:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:54,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073932539] [2023-11-23 20:35:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073932539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073376248] [2023-11-23 20:35:54,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:35:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:54,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:54,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 20:35:54,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 20:35:54,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:35:54,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 20:35:54,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 20:35:55,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073376248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:55,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:35:55,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2023-11-23 20:35:55,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842136791] [2023-11-23 20:35:55,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:55,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:35:55,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:35:55,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:35:55,191 INFO L87 Difference]: Start difference. First operand 156 states and 175 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2023-11-23 20:35:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:55,454 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2023-11-23 20:35:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:35:55,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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 [2023-11-23 20:35:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:55,455 INFO L225 Difference]: With dead ends: 156 [2023-11-23 20:35:55,456 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 20:35:55,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-23 20:35:55,457 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:55,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 168 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 20:35:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 20:35:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 143 states have (on average 1.132867132867133) internal successors, (162), 145 states have internal predecessors, (162), 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) [2023-11-23 20:35:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2023-11-23 20:35:55,477 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 78 [2023-11-23 20:35:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:55,477 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2023-11-23 20:35:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 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) [2023-11-23 20:35:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2023-11-23 20:35:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 20:35:55,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:55,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:55,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 20:35:55,686 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 20:35:55,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -96166148, now seen corresponding path program 1 times [2023-11-23 20:35:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:55,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679389319] [2023-11-23 20:35:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:55,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:35:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008638004] [2023-11-23 20:35:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:55,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:55,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:55,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:55,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068a45a6-f616-435c-89fe-29009d5fe9a9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 20:35:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:55,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:35:55,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 20:35:55,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:55,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679389319] [2023-11-23 20:35:55,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:35:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008638004] [2023-11-23 20:35:55,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008638004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:55,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:55,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180667275] [2023-11-23 20:35:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:35:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:35:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:35:55,818 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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)